The Project Manual of Technical Documents for ... - City of Charlotte

The Project Manual of Technical Documents for

BUS MAINTENANCE AND OPERATIONS FACILITY

CHILLER ADDITION AND REPLACEMENT PROJECT

Location: 3145 South Tryon St. Charlotte NC

DESIGN CONTRACT#: 2021000007

DATE: 02/22/2021

DESIGN TEAM :

______________________________________________________________________________

2/22/2021

MILLIGAN ARCHITECTURE,

INC

PROJECT LEAD:

PROFESSSIONAL

ENGINEERING

ASSOCIATES, PA

RITCHIE ENGINEERING, PC

HAAS & KENNEDY

ENGINEERS, PA

AERORAQ

ENGINEERING, INC

2/22/2021

TABLE OF CONTENTS:

DIVISION 01 – GENERAL REQUIREMENTS

SECTION TITLE PAGES

011000 SUMMARY /TECHNICAL SPECIFICATIONS 1 - 3

DIVISION 03 – CONCRETE

033000 CAST-IN-PLACE CONCRETE 1 - 16

DIVISION 04 – MASONRY

048100 UNIT MASONRY ASSEMBLIES 1 - 13

DIVISION 05 – METALS

051200 STRUCTURAL STEEL FRAMING 1 - 7

DIVISION 23 – HEATING, VENTILATING AND AIR CONDITIONING (HVAC)

230000 GENERAL PROVISIONS 1 - 10

230500 HEATING, VENTILATION AND AIR CONDITIONING 1 - 3

230593 TESTING, ADJUSTING AND BALANCE 1 - 2

230700 MECHANICAL INSULATION 1 - 3

230900 CONTROLS AND INSTRUMENTATION 1 - 6

232100 BASIC PIPING AND MATERIALS 1 - 6

232113 ELECTRICAL EQUIPMENT FOR MECHANICAL 1 - 2

232123 PUMPS 1 - 2

232500 WATER TREATMENT SYSTEMS 1 - 2

236426 REFRIGERATION EQUIPMENT 1 - 5

238500 VARIABLE FREQUENCY DRIVES 1 - 5

DIVISION 26 – ELECTRICAL

260100 ELECTRICAL GENERAL REQUIREMENTS 1 - 4

260126 ELECTRICAL TESTING 1 - 2

260200 ELECTRICAL DEMOLITION 1 - 2

260519 CONDUCTORS 1 - 3

260526 GROUNDING AND BONDING 1 - 2

260528 ELECTRICAL SUPPORTS AND SEISMIC RESTRAINTS 1 - 7

260529 FASTENINGS AND SUPPORTS 1

260533 RACEWAY AND FITTINGS 1 - 4

262727 OUTLET AND JUNCTION BOXES 1 - 2

262728 EQUIPMENT CONNECTIONS 1

262816 DISCONNECTS, MOTORS & CIRCUITS 1

TECHNICAL DRAWINGS LIST:

C100 COVER SHEET

C101 APPENDIX B FOR Office Bldg.

C102 APPENDIX B FOR MAINTENANCE BLDG.

A100 CHILLER ENCLOSURE PLAN & DETAILS - OFFICE BLDG. ADD ALTERNATE # 2

S100 OFFICE BLDG. FOUNDATION PLAN

S200 MAINTENANCE BLDG. FOUNDATION PLAN

M100 OFFICE BLDG. HVAC FIRST FLOOR PLANS AND DETAILS

M101 OFFICE BLDG. HVAC ENLARGED PLANS AND DETAILS

M102 OFFICE BLDG. HVAC SECOND FLOOR PLAN

M103 OFFICE BLDG. HVAC ROOF PLAN

M104 OFFICE BLDG. HVAC SCHEDULES AND NOTES

M105 OFFICE BLDG. HVAC CONTROLS & LEGEND

M200 MAINTENANCE BLDG. HVAC OVERALL PLAN

M201 MAINTENANCE BLDG. HVAC DIAGRAMS AND ENLARGED PLANS

M202 MAINTENANCE BLDG. HVAC SCHEDULES AND DETAILS

M203 MAINTENANCE BLDG. HVAC CONTROLS AND LEGEND

M300 PAINT & BODY SHOP HVAC LOWER LEVEL PLAN

M301 PAINT & BODY SHOP HVAC UPPER LEVEL PLAN

E100 ELECTRICAL INFO

E101

OFFICE BUILDING NEW CHILLER AND EXISTING RENTAL REMOVAL PLAN - FIRST

FLOOR

E102

OFFICE BUILDING NEW CHILLER AND EXISTING RENTAL REMOVAL PLAN - 2ND

FLOOR

E201 MAINTENANCE BUILDING NEW CHILLER PLAN

SUMMARY 011000 - 1

SECTION 011000 – SUMMARY / TECHNICAL SPECIFICATIONS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions

and other Division 1 Specification Sections, apply to this Section.

1.2 WORK COVERED BY CONTRACT DOCUMENTS A. Project Identification:

This Project consists of work at a multi building facility which includes an existing, two story 36,286 sqf Office Building and a 70,822 sqf Maintenance Building with additional minor work in thee 37,000 sqf Paint & Body Building. The work consists of providing a new chiller and additional mechanical support components for the Office building and removing and replacing an existing chiller and additional parts of the mechanical and control system. Also included is the electrical to support the mechanical changes. This project also includes the provision of a masonry chiller enclosure, concrete equipment pad work and test and balance on all new equipment in the chilled water system. Mechanical Contractor to install a new 100-ton chiller and a replacement 70-ton chiller and pumps and controls. Electrical includes new and replacement equipment connections. The owner shall occupy the facility during construction and comfort conditions inside the buildings will be maintained.

B. Project Information: Project will be constructed under a single prime contract with the Mechanical Contractor being the prime contractor and project expediter. Because of the project size, a General Contractor License may be required for the project. The time schedule for completing the project is of the essence of the Contract. The Owner will pay all Permit/Review fees associated with this project.

C. Project Lead Design Engineer Project Engineer-Wally Overton, PE Professional Engineering Associates, PA 6451 Morehead Road, Suite B Harrisburg, NC 28075 704-651-4736

D. Owner Project Manager: Project Manager - Thurston Davis Facilities Manager Charlotte Area Transit System (CATS) 3145 South Tryon Street Charlotte, NC 28206 704-432-1283

SUMMARY 011000 - 2

1.3 PROJECT ALTERNATES

A. Base Bid – Provide a new 100-ton Chiller with associated support components as detailed on the plans to serve the existing Office Building.

B. Alternate # 1 – Provide a replacement 70-ton Chiller with associated components as detailed on the plans to serve the existing Maintenance Building.

C. Alternant # 2 – Provide a masonry screen/enclosure wall around the new chiller at the Office Building as detailed on the plans.

1.4 PROJECT WORK PHASES The Work shall be completed in the following general phases: Phase 1 – Provide the new Chiller to serve the existing Office Building including pumps, pads, electrical, accessories and the integration of the chiller controls into the owners CCN Control System with minimum down time for the owner occupied building. Phase 2 Provide the replacement Chiller to serve the existing Maintenance Building including pumps, pads, electrical, accessories and the integration of the chiller controls into the owners CCN Control System with minimum down time for the owner occupied building. Phase 3 Provide a new masonry chiller enclosure with minimum down time for the owner occupied building. Continuous Phase – The integration/upgrades to the existing Carrier CCN Control System, calibration, Test & Balance of Chilled water systems, electrical service upgrades, provide the required electrical support for the replacements of mechanical equipment and other miscellaneous work may proceed as scheduled with the owner. Construction must be scheduled in such a manner that once Work has commenced on one phase, the Contractor's work force must remain at that location continuously each work day through final completion of that phase. NOTE : The term “Down Time” shall mean anytime the owner is deprived of any and all normal building functions, including but not limited to HVAC, Electrical, communications or other building functions considered for normal operation.

1.5 WORK UNDER OTHER CONTRACTS A. Owner may award a separate contract for performance of certain construction operations at Project

site. Those separate contracts could be conducted simultaneously with Work under this Contract.

1.6 USE OF PREMISES A. General: Contractor shall have limited use of premises for construction operations, including use

of Project site, during construction period as described in the article Work Phases in this section. Contractor's use of premises is limited by Owner’s occupancy of remainder of the building in each phase, Owner's right to perform work or to retain other contractors on portions of Project. On-Site Work Hours: Work must be generally performed during normal business working hours of 8 a.m. to 5 p.m., Monday through Friday, except as otherwise indicated. Obtain permission from Owner Project Manager prior to any hours to be performed outside the normal business working hours specified above.

B. Driveways and Entrances: Keep driveways and entrances serving premises clear and available to Owner, Owner's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

SUMMARY 011000 - 3

C. Use of Existing Building: Maintain existing building in a weather tight condition throughout construction period. Repair damage caused by construction operations. Protect building during construction period. Maintain the interior temperature and humidity levels as required to protect existing millwork, wood doors and frames, wood trim, and other finish wood elements. Replace damaged items at no additional cost to the Owner.

D. The contractor shall provide portable toilet facilities for the use of the construction crews. Portable toilet facilities shall be maintained and serviced weekly. The building toilet facilities shall not be used by the contractor’s employees during the construction of this project.

2 PRODUCTS (Not Used)

3 EXECUTION (Not Used)

END OF SECTION 011000

CAST-IN-PLACE CONCRETE 033000 - 1

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section specifies cast-in place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes, for the following:

1. Footings. 2. Equipment Foundations.

1.3 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements.

1.4 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

1. Indicate amounts of mixing water to be withheld for later addition at Project site.

C. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement.

D. Samples: For vapor retarder .

E. Welding certificates.

F. Qualification Data: For Installer and manufacturer.

G. Material Certificates: For each of the following, signed by manufacturers:

1. Cementitious materials. 2. Admixtures. 3. Form materials and form-release agents. 4. Steel reinforcement and accessories.


5. Curing compounds. 6. Repair materials.

H. Field quality-control test and inspection reports.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: A qualified installer who employs on Project personnel qualified as ACI-certified Flatwork Technician and Finisher and a supervisor who is an ACI-certified Concrete Flatwork Technician.

B. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

1. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities."

C. Testing Agency Qualifications: An independent agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 for testing indicated, as documented according to ASTM E 548.

1. Personnel conducting field tests shall be qualified as ACI Concrete Field Testing Technician, Grade 1, according to ACI CP-01 or an equivalent certification program.

2. Personnel performing laboratory tests shall be ACI-certified Concrete Strength Testing Technician and Concrete Laboratory Testing Technician - Grade I. Testing Agency laboratory supervisor shall be an ACI-certified Concrete Laboratory Testing Technician - Grade II.

D. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from one source, and obtain admixtures through one source from a single manufacturer.

E. ACI Publications: Comply with the following unless modified by requirements in the Contract Documents:

1. ACI 301, "Specification for Structural Concrete," Sections 1 through 5. 2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

F. Concrete Testing Service: Engage a qualified independent testing agency to perform material evaluation tests and to design concrete mixtures.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Steel Reinforcement: Deliver, store, and handle steel reinforcement to prevent bending and damage.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:


1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, products specified.

2. Products: Subject to compliance with requirements, provide one of the products specified. 3. Available Manufacturers: Subject to compliance with requirements, manufacturers offering

products that may be incorporated into the Work include, but are not limited to, manufacturers specified.

4. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

1. Plywood, metal, or other approved panel materials.

B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material. Provide lumber dressed on at least two edges and one side for tight fit.

C. Chamfer Strips: Wood, metal, PVC, or rubber strips, 3/4 by 3/4 inch, minimum.

2.3 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed.

B. Low-Alloy-Steel Reinforcing Bars: ASTM A 706/A 706M, deformed.

C. Plain-Steel Wire: ASTM A 82, as drawn.

D. Deformed-Steel Wire: ASTM A 496.

E. Plain-Steel Welded Wire Reinforcement: ASTM A 185, plain, fabricated from as-drawn steel wire into flat sheets.

2.4 REINFORCEMENT ACCESSORIES

A. Joint Dowel Bars: ASTM A 615/A 615M, Grade 60, plain-steel bars, cut bars true to length with ends square and free of burrs.

B. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows:

1. For concrete surfaces exposed to view where legs of wire bar supports contact forms, use CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports.

2.5 CONCRETE MATERIALS

A. Cementitious Material: Use the following cementitious materials, of the same type, brand, and source, throughout Project:


1. Portland Cement: ASTM C 150, Type I/II. Supplement with the following:

a. Fly Ash: ASTM C 618, Class [C] [F].

B. Silica Fume: ASTM C 1240, amorphous silica.

C. Normal-Weight Aggregates: ASTM C 33, Class 3S, coarse aggregate or better, graded. Provide aggregates from a single source.

1. Maximum Coarse-Aggregate Size:1-1/2 inches nominal. 2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

D. Water: ASTM C 94/C 94M and potable.

2.6 ADMIXTURES

A. Air-Entraining Admixture: ASTM C 260.

B. Chemical Admixtures: Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. Do not use calcium chloride or admixtures containing calcium chloride.

1. Water-Reducing Admixture: ASTM C 494/C 494M, Type A. 2. Retarding Admixture: ASTM C 494/C 494M, Type B. 3. Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D. 4. High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F. 5. High-Range, Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type G. 6. Plasticizing and Retarding Admixture: ASTM C 1017/C 1017M, Type II.

2.7 CURING MATERIALS

A. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete.

1. Available Products:

a. Axim Concrete Technologies; Cimfilm. b. Burke by Edoco; BurkeFilm. c. ChemMasters; Spray-Film. d. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; Aquafilm. e. Dayton Superior Corporation; Sure Film. f. Euclid Chemical Company (The); Eucobar. g. Kaufman Products, Inc.; Vapor Aid. h. Lambert Corporation; Lambco Skin. i. L&M Construction Chemicals, Inc.; E-Con. j. MBT Protection and Repair, Div. of ChemRex; Confilm. k. Meadows, W. R., Inc.; Sealtight Evapre. l. Metalcrete Industries; Waterhold. m. Nox-Crete Products Group, Kinsman Corporation; Monofilm. n. Sika Corporation, Inc.; SikaFilm. o. Symons Corporation, a Dayton Superior Company; Finishing Aid. p. Unitex; Pro-Film.


B. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. when dry.

C. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

D. Water: Potable.

E. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, dissipating.


a. Anti-Hydro International, Inc.; AH Curing Compound #2 DR WB. b. Burke by Edoco; Aqua Resin Cure. c. ChemMasters; Safe-Cure Clear. d. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; W.B. Resin

Cure. e. Dayton Superior Corporation; Day Chem Rez Cure (J-11-W). f. Euclid Chemical Company (The); Kurez DR VOX. g. Kaufman Products, Inc.; Thinfilm 420. h. Lambert Corporation; Aqua Kure-Clear. i. L&M Construction Chemicals, Inc.; L&M Cure R. j. Meadows, W. R., Inc.; 1100 Clear. k. Nox-Crete Products Group, Kinsman Corporation; Resin Cure E. l. Symons Corporation, a Dayton Superior Company; Resi-Chem Clear Cure. m. Tamms Industries, Inc.; Horncure WB 30. n. Unitex; Hydro Cure 309.

F. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, nondissipating, certified by curing compound manufacturer to not interfere with bonding of floor covering.


a. Anti-Hydro International, Inc.; AH Clear Cure WB. b. Burke by Edoco; Spartan Cote WB II. c. ChemMasters; Safe-Cure & Seal 20. d. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; Cure and

Seal WB. e. Dayton Superior Corporation; Safe Cure and Seal (J-18). f. Euclid Chemical Company (The); Aqua Cure VOX. g. Kaufman Products, Inc.; Cure & Seal 309 Emulsion. h. Lambert Corporation; Glazecote Sealer-20. i. L&M Construction Chemicals, Inc.; Dress & Seal WB. j. Meadows, W. R., Inc.; Vocomp-20. k. Metalcrete Industries; Metcure. l. Nox-Crete Products Group, Kinsman Corporation; Cure & Seal 150E. m. Symons Corporation, a Dayton Superior Company; Cure & Seal 18 Percent E. n. Tamms Industries, Inc.; Clearseal WB 150. o. Unitex; Hydro Seal.

G. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, 18 to 25 percent solids, nondissipating, certified by curing compound manufacturer to not interfere with bonding of floor covering.



a. Burke by Edoco; Spartan Cote WB II 20 Percent. b. ChemMasters; Safe-Cure Clear. c. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; High Seal. d. Dayton Superior Corporation; Safe Cure and Seal (J-19). e. Euclid Chemical Company (The); Diamond Clear VOX. f. Kaufman Products, Inc.; SureCure Emulsion. g. Lambert Corporation; Glazecote Sealer-20. h. L&M Construction Chemicals, Inc.; Dress & Seal WB. i. MBT Protection and Repair, Div. of ChemRex; MasterKure-N-Seal VOC. j. Meadows, W. R., Inc.; Vocomp-20. k. Metalcrete Industries; Metcure 0800. l. Nox-Crete Products Group, Kinsman Corporation; Cure & Seal 200E. m. Sonneborn, Div. of ChemRex; Kure-N-Seal. n. Symons Corporation, a Dayton Superior Company; Cure & Seal 18 Percent E. o. Tamms Industries, Inc.; Clearseal WB STD. p. Unitex; Hydro Seal 18.

H. Clear, Solvent-Borne, Membrane-Forming Curing and Sealing Compound: ASTM C 1315, Type 1, Class A.


a. Burke by Edoco; Cureseal 1315. b. ChemMasters; Spray-Cure & Seal Plus. c. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company;

Sealcure 1315. d. Dayton Superior Corporation; Day-Chem Cure and Seal (J-22UV). e. Euclid Chemical Company (The); Super Diamond Clear. f. Kaufman Products, Inc.; Sure Cure 25. g. Lambert Corporation; UV Super Seal. h. L&M Construction Chemicals, Inc.; Lumiseal Plus. i. Meadows, W. R., Inc.; CS-309/30. j. Metalcrete Industries; Seal N Kure 0. k. Sonneborn, Div. of ChemRex; Kure-N-Seal 5. l. Tamms Industries, Inc.; LusterSeal 300. m. Unitex; Solvent Seal 1315. n. US Mix Products Company; US Spec CS-25

I. Clear, Waterborne, Membrane-Forming Curing and Sealing Compound: ASTM C 1315, Type 1, Class A.


a. Burke by Edoco; Cureseal 1315 WB. b. ChemMasters; Polyseal WB. c. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company;

Sealcure 1315 WB. d. Euclid Chemical Company (The); Super Diamond Clear VOX. e. Kaufman Products, Inc.; Sure Cure 25 Emulsion. f. Lambert Corporation; UV Safe Seal. g. L&M Construction Chemicals, Inc.; Lumiseal WB Plus. h. Meadows, W. R., Inc.; Vocomp-30. i. Metalcrete Industries; Metcure 30. j. Symons Corporation, a Dayton Superior Company; Cure & Seal 31 Percent E. k. Tamms Industries, Inc.; LusterSeal WB 300. l. Unitex; Hydro Seal 25.


2.8 RELATED MATERIALS

2.9 REPAIR MATERIALS

A. Repair Underlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/8 inch and that can be feathered at edges to match adjacent floor elevations.

1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219.

2. Primer: Product of underlayment manufacturer recommended for substrate, conditions, and application.

3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by underlayment manufacturer.

4. Compressive Strength: Not less than 4100 psi at 28 days when tested according to ASTM C 109/C 109M.

2.10 CONCRETE MIXTURES, GENERAL

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.

1. Use a qualified independent testing agency for preparing and reporting proposed mixture designs based on laboratory trial mixtures.

B. Cementitious Materials: Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows:

1. Fly Ash: 25 percent. 2. Combined Fly Ash and Pozzolan: 25 percent.

C. Limit water-soluble, chloride-ion content in hardened concrete to 0.06 percent by weight of cement.

D. Admixtures: Use admixtures according to manufacturer's written instructions.

1. Use water-reducing, high-range water-reducing or plasticizing admixture in concrete, as required, for placement and workability.

2. Use water-reducing and retarding admixture when required by high temperatures, low humidity, or other adverse placement conditions.

2.11 CONCRETE MIXTURES FOR BUILDING ELEMENTS

A. Proportion normal-weight concrete mixture as follows: 1. Minimum Compressive Strength: as indicated at 28 days. 2. Slump Limit: 5 inches, plus or minus 1 inch. 3. Air Content: 5.5 percent, plus or minus 1.5 percent at point of delivery for 1-1/2-inch nominal

maximum aggregate size. 4. Air Content: 6 percent, plus or minus 1.5 percent at point of delivery for 3/4-inch nominal

maximum aggregate size. 5. Air Content: Do not allow air content of troweled finished floors to exceed 3 percent.


2.12 FABRICATING REINFORCEMENT

A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."

2.13 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M and ASTM C 1116, and furnish batch ticket information.

1. When air temperature is between 85 and 90 deg F , reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F, reduce mixing and delivery time to 60 minutes.

B. Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to ASTM C 94/C 94M. Mix concrete materials in appropriate drum-type batch machine mixer.

1. For mixer capacity of 1 cu. yd. or smaller, continue mixing at least 1-1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released.

2. For mixer capacity larger than 1 cu. yd., increase mixing time by 15 seconds for each additional 1 cu. yd..

3. Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water added. Record approximate location of final deposit in structure.

PART 3 - EXECUTION

3.1 FORMWORK

A. Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until structure can support such loads.

B. Construct formwork so concrete members and structures are of size, shape, alignment, elevation, and position indicated, within tolerance limits of ACI 117.

C. Limit concrete surface irregularities, designated by ACI 347R as abrupt or gradual, as follows: 1. Class C, 1/2 inch for rough-formed finished surfaces.

D. Construct forms tight enough to prevent loss of concrete mortar.

E. Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.

1. Install keyways, reglets, recesses, and the like, for easy removal. 2. Do not use rust-stained steel form-facing material.

F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting-type screeds.


G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.

H. Chamfer exterior corners and edges of permanently exposed concrete.

I. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items.

J. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

K. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.

L. Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement.

3.2 EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

1. Install anchor rods, accurately located, to elevations required and complying with tolerances in Section 7.5 of AISC's "Code of Standard Practice for Steel Buildings and Bridges."

2. Install reglets to receive waterproofing and to receive through-wall flashings in outer face of concrete frame at exterior walls, where flashing is shown at lintels, shelf angles, and other conditions.

3. Install dovetail anchor slots in concrete structures as indicated.

3.3 REMOVING AND REUSING FORMS

A. General: Formwork for sides of beams, walls, columns, and similar parts of the Work that does not support weight of concrete may be removed after cumulatively curing at not less than 50 deg F for 24 hours after placing concrete, if concrete is hard enough to not be damaged by form-removal operations and curing and protection operations are maintained.

B. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces. Apply new form-release agent.

C. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints. Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless approved by Architect.

3.4 VAPOR RETARDERS

3.5 STEEL REINFORCEMENT

A. General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement.


1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.

B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials that would reduce bond to concrete.

C. Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Do not tack weld crossing reinforcing bars.

D. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces.

E. Install welded wire reinforcement in longest practicable lengths on bar supports spaced to minimize sagging. Lap edges and ends of adjoining sheets at least one mesh spacing. Offset laps of adjoining sheet widths to prevent continuous laps in either direction. Lace overlaps with wire.

3.6 JOINTS

A. General: Construct joints true to line with faces perpendicular to surface plane of concrete.

B. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by Architect.

1. Place joints perpendicular to main reinforcement. Continue reinforcement across construction joints, unless otherwise indicated. Do not continue reinforcement through sides of strip placements of floors and slabs.

2. Form keyed joints as indicated. Embed keys at least 1-1/2 inches into concrete. 3. Locate horizontal joints in walls and columns at underside of floors, slabs, beams, and girders and

at the top of footings or floor slabs. 4. Space vertical joints in walls as indicated. Locate joints beside piers integral with walls, near

corners, and in concealed locations where possible. 5. Use a bonding agent at locations where fresh concrete is placed against hardened or partially

hardened concrete surfaces. 6. Use epoxy-bonding adhesive at locations where fresh concrete is placed against hardened or

partially hardened concrete surfaces.

C. Doweled Joints: Install dowel bars and support assemblies at joints where indicated. Lubricate or asphalt coat one-half of dowel length to prevent concrete bonding to one side of joint.

3.7 CONCRETE PLACEMENT

A. Before placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.

B. Do not add water to concrete during delivery, at Project site, or during placement unless approved by Architect.

C. Before test sampling and placing concrete, water may be added at Project site, subject to limitations of ACI 301.

1. Do not add water to concrete after adding high-range water-reducing admixtures to mixture.


D. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new concrete will be placed on concrete that has hardened enough to cause seams or planes of weakness. If a section cannot be placed continuously, provide construction joints as indicated. Deposit concrete to avoid segregation.

1. Deposit concrete in horizontal layers of depth to not exceed formwork design pressures and in a manner to avoid inclined construction joints.

2. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301. 3. Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators vertically at

uniformly spaced locations to rapidly penetrate placed layer and at least 6 inches into preceding layer. Do not insert vibrators into lower layers of concrete that have begun to lose plasticity. At each insertion, limit duration of vibration to time necessary to consolidate concrete and complete embedment of reinforcement and other embedded items without causing mixture constituents to segregate.

E. Deposit and consolidate concrete for floors and slabs in a continuous operation, within limits of construction joints, until placement of a panel or section is complete.

1. Consolidate concrete during placement operations so concrete is thoroughly worked around reinforcement and other embedded items and into corners.

2. Maintain reinforcement in position on chairs during concrete placement. 3. Screed slab surfaces with a straightedge and strike off to correct elevations. 4. Slope surfaces uniformly to drains where required. 5. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface

plane, before excess bleedwater appears on the surface. Do not further disturb slab surfaces before starting finishing operations.

F. Cold-Weather Placement: Comply with ACI 306.1 and as follows. Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing actions, or low temperatures.

1. When average high and low temperature is expected to fall below 40 deg F for three successive days, maintain delivered concrete mixture temperature within the temperature range required by ACI 301.

2. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs.

G. Hot-Weather Placement: Comply with ACI 301 and as follows:

1. Maintain concrete temperature below 90 deg F at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of ice is calculated to total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor's option.

2. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.

3.8 FINISHING FORMED SURFACES

A. Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with tie holes and defects repaired and patched. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

1. Apply to concrete surfaces not exposed to public view.


B. Smooth-Formed Finish: As-cast concrete texture imparted by form-facing material, arranged in an orderly and symmetrical manner with a minimum of seams. Repair and patch tie holes and defects. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

1. Apply to concrete surfaces exposed to public view, to receive a rubbed finish, to be covered with a coating or covering material applied directly to concrete.

C. Rubbed Finish: Apply the following to smooth-formed finished as-cast concrete where indicated:

1. Smooth-Rubbed Finish: Not later than one day after form removal, moisten concrete surfaces and rub with carborundum brick or another abrasive until producing a uniform color and texture. Do not apply cement grout other than that created by the rubbing process.

2. Grout-Cleaned Finish: Wet concrete surfaces and apply grout of a consistency of thick paint to coat surfaces and fill small holes. Mix one part portland cement to one and one-half parts fine sand with a 1:1 mixture of bonding admixture and water. Add white portland cement in amounts determined by trial patches so color of dry grout will match adjacent surfaces. Scrub grout into voids and remove excess grout. When grout whitens, rub surface with clean burlap and keep surface damp by fog spray for at least 36 hours.

3. Cork-Floated Finish: Wet concrete surfaces and apply a stiff grout. Mix one part portland cement and one part fine sand with a 1:1 mixture of bonding agent and water. Add white portland cement in amounts determined by trial patches so color of dry grout will match adjacent surfaces. Compress grout into voids by grinding surface. In a swirling motion, finish surface with a cork float.

D. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed surfaces adjacent to formed surfaces, strike off smooth and finish with a texture matching adjacent formed surfaces. Continue final surface treatment of formed surfaces uniformly across adjacent unformed surfaces, unless otherwise indicated.

3.9 FINISHING FLOORS AND SLABS

A. General: Comply with ACI 302.1R recommendations for screeding, restraightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces.

B. Float Finish: Consolidate surface with power-driven floats or by hand floating if area is small or inaccessible to power driven floats. Restraighten, cut down high spots, and fill low spots. Repeat float passes and restraightening until surface is left with a uniform, smooth, granular texture.

1. Apply float finish to surfaces indicated to receive trowel finish and to be covered with fluid-applied or sheet waterproofing, built-up or membrane roofing, or sand-bed terrazzo.

C. Trowel Finish: After applying float finish, apply first troweling and consolidate concrete by hand or power-driven trowel. Continue troweling passes and restraighten until surface is free of trowel marks and uniform in texture and appearance. Grind smooth any surface defects that would telegraph through applied coatings or floor coverings.

1. Apply a trowel finish to surfaces exposed to view or to be covered with resilient flooring, carpet, ceramic or quarry tile set over a cleavage membrane, paint, or another thin-film-finish coating system.

2. Finish and measure surface so gap at any point between concrete surface and an unleveled, freestanding, 10-foot- long straightedge resting on 2 high spots and placed anywhere on the surface does not exceed 1/4 inch .


D. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, and ramps, and elsewhere as indicated.

1. Immediately after float finishing, slightly roughen trafficked surface by brooming with fiber-bristle broom perpendicular to main traffic route. Coordinate required final finish with Architect before application.

3.10 MISCELLANEOUS CONCRETE ITEMS

A. Filling In: Fill in holes and openings left in concrete structures, unless otherwise indicated, after work of other trades is in place. Mix, place, and cure concrete, as specified, to blend with in-place construction. Provide other miscellaneous concrete filling indicated or required to complete the Work.

B. Curbs: Provide monolithic finish to interior curbs by stripping forms while concrete is still green and by steel-troweling surfaces to a hard, dense finish with corners, intersections, and terminations slightly rounded.

C. Equipment Bases and Foundations: Provide machine and equipment bases and foundations as shown on Drawings. Set anchor bolts for machines and equipment at correct elevations, complying with diagrams or templates from manufacturer furnishing machines and equipment.

D. Steel Pan Stairs: Provide concrete fill for steel pan stair treads, landings, and associated items. Cast-in inserts and accessories as shown on Drawings. Screed, tamp, and trowel-finish concrete surfaces.

3.11 CONCRETE PROTECTING AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 301 for hot-weather protection during curing.

B. Evaporation Retarder: Apply evaporation retarder to unformed concrete surfaces if hot, dry, or windy conditions cause moisture loss approaching 0.2 lb/sq. ft. x h before and during finishing operations. Apply according to manufacturer's written instructions after placing, screeding, and bull floating or darbying concrete, but before float finishing.

C. Formed Surfaces: Cure formed concrete surfaces, including underside of beams, supported slabs, and other similar surfaces. If forms remain during curing period, moist cure after loosening forms. If removing forms before end of curing period, continue curing for the remainder of the curing period.

D. Unformed Surfaces: Begin curing immediately after finishing concrete. Cure unformed surfaces, including floors and slabs, concrete floor toppings, and other surfaces.

E. Cure concrete according to ACI 308.1, by one or a combination of the following methods:

1. Moisture Curing: Keep surfaces continuously moist for not less than seven days with the following materials:

a. Water. b. Continuous water-fog spray. c. Absorptive cover, water saturated, and kept continuously wet. Cover concrete surfaces and

edges with 12-inch lap over adjacent absorptive covers.


2. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches, and sealed by waterproof tape or adhesive. Cure for not less than seven days. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

a. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive floor coverings.

b. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive penetrating liquid floor treatments.

c. Cure concrete surfaces to receive floor coverings with either a moisture-retaining cover or a curing compound that the manufacturer certifies will not interfere with bonding of floor covering used on Project..

3. Curing Compound: Apply uniformly in continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application. Maintain continuity of coating and repair damage during curing period.

a. After curing period has elapsed, remove curing compound without damaging concrete surfaces by method recommended by curing compound manufacturer unless manufacturer certifies curing compound will not interfere with bonding of floor covering used on Project.

4. Curing and Sealing Compound: Apply uniformly to floors and slabs indicated in a continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application. Repeat process 24 hours later and apply a second coat. Maintain continuity of coating and repair damage during curing period.

3.12 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair and patch defective areas when approved by Architect. Remove and replace concrete that cannot be repaired and patched to Architect's approval.

B. Patching Mortar: Mix dry-pack patching mortar, consisting of one part portland cement to two and one-half parts fine aggregate passing a No. 16 sieve, using only enough water for handling and placing.

C. Repairing Formed Surfaces: Surface defects include color and texture irregularities, cracks, spalls, air bubbles, honeycombs, rock pockets, fins and other projections on the surface, and stains and other discolorations that cannot be removed by cleaning.

1. Immediately after form removal, cut out honeycombs, rock pockets, and voids more than 1/2 inch in any dimension in solid concrete, but not less than 1 inch in depth. Make edges of cuts perpendicular to concrete surface. Clean, dampen with water, and brush-coat holes and voids with bonding agent. Fill and compact with patching mortar before bonding agent has dried. Fill form-tie voids with patching mortar or cone plugs secured in place with bonding agent.

2. Repair defects on surfaces exposed to view by blending white portland cement and standard portland cement so that, when dry, patching mortar will match surrounding color. Patch a test area at inconspicuous locations to verify mixture and color match before proceeding with patching. Compact mortar in place and strike off slightly higher than surrounding surface.

3. Repair defects on concealed formed surfaces that affect concrete's durability and structural performance as determined by Architect.

D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for finish and verify surface tolerances specified for each surface. Correct low and high areas. Test surfaces sloped to drain for trueness of slope and smoothness; use a sloped template.


1. Repair finished surfaces containing defects. Surface defects include spalls, popouts, honeycombs, rock pockets, crazing and cracks in excess of 0.01 inch wide or that penetrate to reinforcement or completely through unreinforced sections regardless of width, and other objectionable conditions.

2. After concrete has cured at least 14 days, correct high areas by grinding. 3. Correct localized low areas during or immediately after completing surface finishing operations by

cutting out low areas and replacing with patching mortar. Finish repaired areas to blend into adjacent concrete.

4. Correct other low areas scheduled to receive floor coverings with a repair underlayment. Prepare, mix, and apply repair underlayment and primer according to manufacturer's written instructions to produce a smooth, uniform, plane, and level surface. Feather edges to match adjacent floor elevations.

5. Correct other low areas scheduled to remain exposed with a repair topping. Cut out low areas to ensure a minimum repair topping depth of 1/4 inch to match adjacent floor elevations. Prepare, mix, and apply repair topping and primer according to manufacturer's written instructions to produce a smooth, uniform, plane, and level surface.

6. Repair defective areas, except random cracks and single holes 1 inch or less in diameter, by cutting out and replacing with fresh concrete. Remove defective areas with clean, square cuts and expose steel reinforcement with at least a 3/4-inch clearance all around. Dampen concrete surfaces in contact with patching concrete and apply bonding agent. Mix patching concrete of same materials and mixture as original concrete except without coarse aggregate. Place, compact, and finish to blend with adjacent finished concrete. Cure in same manner as adjacent concrete.

7. Repair random cracks and single holes 1 inch or less in diameter with patching mortar. Groove top of cracks and cut out holes to sound concrete and clean off dust, dirt, and loose particles. Dampen cleaned concrete surfaces and apply bonding agent. Place patching mortar before bonding agent has dried. Compact patching mortar and finish to match adjacent concrete. Keep patched area continuously moist for at least 72 hours.

E. Perform structural repairs of concrete, subject to Architect's approval, using epoxy adhesive and patching mortar.

F. Repair materials and installation not specified above may be used, subject to Architect's approval.

3.13 FIELD QUALITY CONTROL

A. Testing and Inspecting: Owner will engage a special inspector to perform field tests and inspections and prepare test reports.

B. Testing and Inspecting: Engage a qualified testing and inspecting agency to perform tests and inspections and to submit reports.

C. Inspections:

1. Steel reinforcement placement. 2. Verification of use of required design mixture. 3. Concrete placement, including conveying and depositing. 4. Curing procedures and maintenance of curing temperature.

D. Concrete Tests: Testing of composite samples of fresh concrete obtained according to ASTM C 172 shall be performed according to the following requirements:

1. Testing Frequency: Obtain one composite sample for each day's pour of each concrete mixture exceeding 5 cu. yd., but less than 25 cu. yd., plus one set for each additional 50 cu. Yd. or fraction thereof.


2. Testing Frequency: Obtain at least one composite sample for each 100 cu. yd. or fraction thereof of each concrete mixture placed each day.

a. When frequency of testing will provide fewer than five compressive-strength tests for each concrete mixture, testing shall be conducted from at least five randomly selected batches or from each batch if fewer than five are used.

3. Slump: ASTM C 143/C 143M; one test at point of placement for each composite sample, but not less than one test for each day's pour of each concrete mixture. Perform additional tests when concrete consistency appears to change.

4. Air Content: ASTM C 231, pressure method, for normal-weight concrete; one test for each composite sample, but not less than one test for each day's pour of each concrete mixture.

5. Concrete Temperature: ASTM C 1064/C 1064M; one test hourly when air temperature is 40 deg F and below and when 80 deg F and above, and one test for each composite sample.

6. Unit Weight: ASTM C 567, fresh unit weight of structural lightweight concrete; one test for each composite sample, but not less than one test for each day's pour of each concrete mixture.

7. Compression Test Specimens: ASTM C 31/C 31M.

a. Cast and laboratory cure two sets of two standard cylinder specimens for each composite sample.

b. Cast and field cure two sets of two standard cylinder specimens for each composite sample.

8. Compressive-Strength Tests: ASTM C 39/C 39M; test one set of two laboratory-cured specimens at 7 days and one set of two specimens at 28 days.

a. Test one set of two field-cured specimens at 7 days and one set of two specimens at 28 days.

b. A compressive-strength test shall be the average compressive strength from a set of two specimens obtained from same composite sample and tested at age indicated.

9. When strength of field-cured cylinders is less than 85 percent of companion laboratory-cured cylinders, Contractor shall evaluate operations and provide corrective procedures for protecting and curing in-place concrete.

10. Strength of each concrete mixture will be satisfactory if every average of any three consecutive compressive-strength tests equals or exceeds specified compressive strength and no compressive-strength test value falls below specified compressive strength by more than 500 psi.

11. Test results shall be reported in writing to Architect, concrete manufacturer, and Contractor within 48 hours of testing. Reports of compressive-strength tests shall contain Project identification name and number, date of concrete placement, name of concrete testing and inspecting agency, location of concrete batch in Work, design compressive strength at 28 days, concrete mixture proportions and materials, compressive breaking strength, and type of break for both 7- and 28-day tests.

12. Nondestructive Testing: Impact hammer, sonoscope, or other nondestructive device may be permitted by Architect but will not be used as sole basis for approval or rejection of concrete.

13. Additional Tests: Testing and inspecting agency shall make additional tests of concrete when test results indicate that slump, air entrainment, compressive strengths, or other requirements have not been met, as directed by Architect. Testing and inspecting agency may conduct tests to determine adequacy of concrete by cored cylinders complying with ASTM C 42/C 42M or by other methods as directed by Architect.

14. Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.

15. Correct deficiencies in the Work that test reports and inspections indicate dos not comply with the Contract Documents.


SECTION 048100 – UNIT MASONRY ASSEMBLIES

PART I - GENERAL

1.1 Summary A. This Section includes unit masonry assemblies consisting of the following:

1. Concrete masonry units. 2. Face brick. 3. Cast stone (Special Finish Masonry - calcium silicate masonry units) 4. Mortar and grout. 5. Reinforcing steel. 6. Masonry joint reinforcement. 7. Ties and anchors. 8. Embedded flashing. 9. Miscellaneous masonry accessories.

B. Contractor is to determine quantities of the brick types required, including waste, and show this total

amount on the bid form. Final selection of materials will be made by the Architect (after award of the construction contract) based upon quotes and materials samples from a minimum of three (3) qualified suppliers.

1.2 Definitions A. Reinforced Masonry: Masonry containing reinforcing steel in grouted cells.

1.3 Submittals A. Product Data: For each different masonry unit, accessory, and other manufactured product

specified. B. Samples for Verification: If requested, provide the following samples:

1. Full-size units for each different exposed masonry unit required, showing the full range of exposed colors, textures, and dimensions to be expected in the completed construction.

C. Material Test Reports: From a qualified testing agency indicating and interpreting test results of the following for compliance with requirements indicated: 1. Each type of masonry unit required.

a. Include size-variation data for brick and simulated stone, verifying that actual range of sizes falls within specified tolerances.

b. Include test results, measurements, and calculations establishing net-area compressive strength of masonry units.

2. Mortar complying with property requirements of ASTM C 270. 3. Grout mixes complying with compressive strength requirements of

ASTM C 476. Include description of type and proportions of grout ingredients. D. Material Certificates: Signed by manufacturers certifying that each of the following items complies

with requirements: 1. Each type of masonry unit required. 2. Each cement product required for mortar and grout, including name of manufacturer,

brand, type, and weight slips at time of delivery. 3. Each material and grade indicated for reinforcing bars. 4. Each type and size of joint reinforcement.

UNIT MASONRY ASSEMBLIES 048100-1

5. Each type and size of anchor, tie, and metal accessory.

1.4 Quality Assurance A. Testing Agency Qualifications: An independent testing agency, acceptable to authorities

having jurisdiction, qualified according to ASTM C 1093 to conduct the testing indicated, as documented according to ASTM E 548.

B. Source Limitations for Masonry Units: Obtain exposed masonry units of a uniform texture and color, or a uniform blend within the ranges accepted for these characteristics, through one source from a single manufacturer for each product type required.

C. Source Limitations for Mortar Materials: Obtain mortar ingredients of a uniform quality, including color for exposed masonry, from one manufacturer for each cementitious component and from one source or producer for each aggregate.

D. Fire-Resistance Ratings: Where indicated, provide materials and construction identical to those of assemblies with fire-resistance ratings determined per ASTM E 119 by a testing and inspecting agency, by equivalent concrete masonry thickness, or by another means, as acceptable to authorities having jurisdiction.

E. Sample Panels: Before ordering unit masonry, build sample panels, using materials indicated for the completed Work, to verify selections made under sample Submittals and to demonstrate aesthetic effects. Build sample panels for each type of exposed unit masonry assembly in sizes and configurations as indicated on the drawings or as directed by the Architect. 1. Locate panels in the locations as directed by Architect / Owner. 2. Clean exposed faces of panels with masonry cleaner indicated. 3. Maintain sample panels during construction in an undisturbed condition as a

standard for judging the completed Work. 4. Approval of sample panels is for color, texture, and blending of masonry units;

relationship of mortar and sealant colors to masonry unit colors; tooling of joints; aesthetic qualities of workmanship; and other material and construction qualities specifically approved by Architect in writing. a. Approval of sample panels does not constitute approval of deviations

from the Contract Documents contained in sample panels, unless such deviations are specifically approved by Architect in writing.

5. Demolish and remove sample panels when directed.

1.5 Delivery, Storage, And Handling A. Store masonry units on elevated platforms in a dry location. If units are not stored in an

enclosed location, cover tops and sides of stacks with waterproof sheeting, securely tied. If units become wet, do not install until they are dry. 1. Protect Type I concrete masonry units from moisture absorption so that, at the time of

installation, the moisture content is not more than the maximum allowed at the time of delivery.

B. Deliver simulated stone units to the site in approved protective film. Prevent damage to units and protect edges and corners.

C. Store masonry units in a manner designed to prevent damage and staining of units. Place polyethylene or other plastic film between wood and finished surfaces of simulated stone units when stored for extended periods of time.


D. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not use cementitious materials that have become damp.

E. Store aggregates where grading and other required characteristics can be maintained and contamination avoided.

F. Deliver preblended, dry mortar mix in moisture-resistant containers designed for lifting and emptying into dispensing silo. Store preblended, dry mortar mix in delivery containers on elevated platforms, under cover, and in a dry location or in a metal dispensing silo with weatherproof cover.

G. Store masonry accessories, including metal items, to prevent corrosion and accumulation of dirt and oil.

H. Do not store materials in such a way that structure or floors are overloaded.

1.6 Project Conditions A. Protection of Masonry: During construction, cover tops of walls, projections, and sills with

waterproof sheeting at end of each day's work. Cover partially completed masonry when construction is not in progress. 1. Extend cover a minimum of 36 inches down both sides and hold cover securely in

place. 2. Where one wythe of multiwythe masonry walls is completed in advance of other wythes,

secure cover a minimum of 36 inches down face next to unconstructed wythe and hold cover in place.

B. Do not apply uniform floor or roof loads for at least 12 hours and concentrated loads for at least 3 days after building masonry walls or columns.

C. Stain Prevention: Prevent grout, mortar, and soil from staining the face of masonry to be left exposed or painted. Immediately remove grout, mortar, and soil that come in contact with such masonry. 1. Protect base of walls from rain-splashed mud and from mortar splatter by

coverings spread on ground and over wall surface. 2. Protect sills, ledges, and projections from mortar droppings. 3. Protect surfaces of window and door frames, as well as similar products with painted

and integral finishes, from mortar droppings. 4. Turn scaffold boards near the wall on edge at the end of each day to prevent rain from

splashing mortar and dirt onto completed masonry. 5. Protect simulated stone or stone masonry units from staining by laying a 4’ wide bed of

wheat straw immediately next to building. Maintain straw until area is landscaped. D. Cold-Weather Requirements: Do not use frozen materials or materials mixed or coated with ice

or frost. Do not build on frozen substrates. Remove and replace unit masonry damaged by frost or by freezing conditions. Comply with cold-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

E. Hot-Weather Requirements: Protect unit masonry work when temperature and humidity conditions produce excessive evaporation of water from mortar and grout. Provide artificial shade and wind breaks and use cooled materials as required. 1. When ambient temperature exceeds 100 deg F, or 90 deg F with a wind velocity greater

than 8 mph, do not spread mortar beds more than 48 inches ahead of masonry. Set masonry units within one minute of spreading mortar.

PART II - PRODUCTS

2.1 Concrete Masonry Units A. General: Provide shapes indicated and as follows:


1. Provide special shapes for lintels, corners, jambs, sash, control joints, headers, bonding, and other special conditions.

B. Concrete Masonry Units: ASTM C 90 and as follows: 1. Unit Compressive Strength: Provide units with minimum average net-area

compressive strength of 2800 psi. 2. Weight Classification: Lightweight, unless otherwise indicated. Manufacture using

100% lightweight fine and coarse aggregates conforming to ASTM C331, with dry net weight of 95 to 105 lbs. per cubic foot per ASTM C140.

3. Size (Width): Manufactured to the following dimensions: a. 4 inches nominal; 3-5/8 inches actual. b. 6 inches nominal; 5-5/8 inches actual. c. 8 inches nominal; 7-5/8 inches actual. d. 12 inches nominal; 11-5/8 inches actual.

4. Exposed Faces: Manufacturer's standard color and texture, unless otherwise indicated.

2.2 Brick A. General: Provide shapes indicated and as follows for each form of brick required:

1. Provide units without cores or frogs and with exposed surfaces finished for ends of sills and caps and for similar applications that would otherwise expose unfinished brick surfaces.

B. Provide special shapes for applications requiring brick of size, form, color, and texture on exposed surfaces that cannot be produced by sawing. 1. Provide special shapes for applications where shapes produced by sawing would result in

sawed surfaces being exposed to view. C. Face Brick: ASTM C 216, Grade SW, Type FBS.

1. Size: Manufactured to the following actual dimensions: a. Utility: 3-5/8 inches wide by 3-5/8 inches high by 11-5/8 inches long. b. Utility: 3-5/8 inches wide by 3-5/8 inches high by 7-5/8 inches long.

2. Application: Use where brick is exposed, unless otherwise indicated.

D. Products: Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Lee Brick b. Boren Brick c. Cherokee-Sanford Brick d. Belden Brick

3. Color and Texture: Color and texture to match existing Office Building OWNER REPRESENTATIVE TO HAVE FINAL APPROVAL ON FINISHES OF ALL MASONRY

2.3 Cast Stone ( Special Finish Masonry) NOT USED A. Calcium silicate masonry units; ASTM C73, Grade SW; pressure formed and autoclaved,

having the following average properties when tested to the identified standard: 1. Compressive strength: 5,500 to 7,600 psi in accordance with ASTM C170. 2. Absorption: 7.8 to 9.8 percent, in accordance with ASTM C97.


3. Density: 125 to 132 lbs./ cubic ft., in accordance with ASTM C97. 4. Modulus of rupture: 625 to 915 psi, in accordance with ASTM C99.

B. Units shall have a bed depth of 3-5!8” and be of modular sizes as indicated on the drawings.

C. Color and Texture: Color and texture shown below are those of Arriscraft “Renaissance Stone”. Equivalent colors, in the opinion of the Architect by other approved manufacturers are acceptable. Manufacturers seeking color match approval will be required to construct a 4’-0” x 4’-0” test panel, at their manufacturer’s expense on the job site for review by the Architect and Owner. 1. Cast Stone (Special Finish Masonry): Cream, smooth finish.

D. Special shapes to be provided as indicated on the drawings. E. Fabrication Tolerances: Simulated stone units shall be fabricated to the following

tolerances: 1. Unit length: plus or minus 1!16” 2. Unit height: plus or minus 1!16” 3. Deviation from square: plus or minus 1!16”, with measurement taken using the longest

edge as the base. 4. Bed depth: plus or minus 1!8” 5. Custom dimensions: plus or minus 1!8” 6. Unit face deviations: plus or minus 3!8”

2.4 Mortar and Grout Materials A. General: Prepackaged mortar mixes, including color pigment, will be used. The masonry

mortar made from the mortar mix shall have a compressive strength of 1800 psi minimum at 28 days when tested in accordance with ASTM C270, with maximum air volume of 16%. The mortar mix shall contain white portland cement, hydrated lime, plasticizing admixtures, color pigment, and/or hydraulic hydrated lime. Mortar cements that contain other materials, including ground limestone, ground slag or other cementitious and non-cementitious materials, are not acceptable. Instructions for mixing the mortar mix shall be published and accompany all shipments. These instructions shall be by volumetric measurements, and shall be developed to show proper proportions of white washed sand to 1 bag of the prepackaged mortar cement with volume of water to produce a flow of the proper consistency.

B. Brick and CMU Mortar Mix: Type S Mortar, Packaged blend of portland cement complying with ASTM C 150, Type I or Type III, and hydrated lime complying with ASTM C 207. Brixment Type S, Flamingo Type S, Lone Star Type S, Santee Type S, or Blue Circle Cement Type S. 1. Color: Color is to match Cast Stone (Special Finish Masonry) mortar color noted

below. C. Cast Stone (Special Finish Masonry) Unit Mortar Mix: Type N Mortar, packaged blend of

Portland Cement complying with ASTM C 150 Type I and hydrated lime complying with ASTM C 207, Type S. Brixment Type N; Flamingo Type N; Lone Star Type N; or Blue Circle Cement, Type N.

1. Color: Color shown below is based on Custom Match pigment. Matching colors, in the opinion of the Architect, by other approved manufacturers are acceptable:

a. Custom Match BYW-22. (matches Cast Stone (Special Finish Masonry) color)

D. Aggregate for Mortar: ASTM C 144; except for joints less than 1/4 inch thick, use aggregate graded with 100 percent passing the No. 16 sieve.

E. Aggregate for Grout: ASTM C 404. F. Water: Potable.


2.5 Reinforcing Steel A. Uncoated Steel Reinforcing Bars: ASTM A 615/A 615M; ASTM A 616/A 616M,

including Supplement 1; or ASTM A 617/A 617M, Grade 60.

2.6 Masonry Joint Reinforcement A. General: ASTM A 951 and as follows:

1. Hot-dip galvanized, carbon-steel wire for both interior and exterior walls. 2. Wire Size for Side Rods: W2.8 or 0.188-inch diameter. 3. Wire Size for Cross Rods: W2.8 or 0.188-inch diameter. 4. Provide in lengths of not less than 10 feet, with prefabricated corner and tee units where

indicated. B. For single-wythe masonry, provide ladder type with single pair of side rods and cross rods

spaced not more than 16 inches o.c., 1. Provide products meeting the above requirements and as manufactured by Dur-O-Wall,

AA Wire Products Company, or Hohman and Barnard. C. For multiwythe masonry, provide types as follows:

1. Adjustable (2-piece) type with single pair of side rods and cross ties spaced not more than 16 inches o.c. and with separate adjustable veneer ties engaging the cross ties. Cross ties are either U-shaped with eyes or rectangular. Space side rods for embedment within each face shell of backup wythe and size adjustable ties to extend at least halfway through outer wythe but with at least 5/8-inch cover on outside face.

2. Provide products meeting the above requirements and as manufactured by Dur-O-Wall, AA Wire Products Company, Wirebond, or Hohman and Barnard.

2.7 Ties And Anchors, General A. General: Provide ties and anchors, made from materials that comply with this Article, unless

otherwise indicated. All anchors and ties shall be designed to comply with North Carolina State Building Code seismic requirements.

B. Hot-Dip Galvanized Carbon-Steel Wire: ASTM A 82; with ASTM A 153, Class B-2 coating. C. Steel Sheet, Galvanized after Fabrication: ASTM A366/A cold-rolled, carbon-steel sheet

hot-dip galvanized after fabrication to comply with ASTM A153. D. Steel Plates, Shapes, and Bars: ASTM A36/A. E. Provide products meeting the above requirements and as manufactured by Dur-O-Wall, AA

Wire Products Company, Wire Bond or Hohman and Barnard.

2.8 Bent Wire Ties A. General: Rectangular units with closed ends and not less than 4 inches wide. Z-shaped ties with

ends bent 90 degrees to provide hooks not less than 2 inches long may be used for masonry constructed from solid units or hollow units laid with cells horizontal.

B. Wire: Fabricate from 3/16-inch- diameter, hot-dip galvanized steel wire. C. Provide products meeting the above requirements and as manufactured by Dur-O-Wall, AA

Wire Products Company, Wire Bond or Hohman and Barnard.

2.9 Adjustable Anchors for Connecting to Steel Frame A. General: Provide two-piece assemblies that allow vertical or horizontal adjustment but resist

tension and compression forces perpendicular to plane of wall. 1. Anchor Section: Crimped 1/4-inch- diameter, hot-dip galvanized steel wire anchor

section for welding to steel.


2. Tie Section: Triangular-shaped wire tie, sized to extend within 1 inch of masonry face, made from 0.1875-inch-diameter, hot-dip galvanized steel wire.

B. Provide products meeting the above requirements and as manufactured by Dur-O-Wall, AA Wire Products Company, Wire Bond or Hohman and Barnard.

2.10 Adjustable Masonry-Veneer Anchors A. General: Provide two-piece assemblies that allow vertical or horizontal adjustment but resist

tension and compression forces perpendicular to plane of wall, for attachment over sheathing to wood or metal studs, and as follows: 1. Structural Performance Characteristics: Capable of withstanding a 100-lbf load in both

tension and compression without deforming or developing play in excess of 0.05 inch. B. Screw-Attached, Masonry-Veneer Anchors: Units consisting of a wire tie section and a metal

anchor section complying with the following requirements: 1. Anchor Section: Sheet metal plate with screw holes top and bottom and with raised rib-

stiffened strap stamped into center to provide a slot between strap and plate for connection of wire tie. a. Plate 1-1/4 inches wide by 6 inches long with strap 5/8 inch wide by 3-5/8 inches

long; slot clearance formed between face of plate and back of strap shall not exceed diameter of wire tie by more than 1/32 inch.

2. Wire Tie Section: Rectangular-shaped wire tie sized to extend at least halfway through veneer but with at least 5/8-inch cover on outside face.

3. Fabricate sheet metal anchor sections and other sheet metal parts from 0.0966-inch- thick, steel sheet, galvanized after fabrication.

4. Fabricate wire tie sections from 0.25-inch-diameter, hot-dip galvanized steel wire.

C. Dovetail Slots in Concrete: Furnish dovetail slots with filler strips, of slot size indicated, fabricated from 0.034-inch, galvanized steel sheet. 1. Connector Section for Concrete: Dovetail tabs for inserting into dovetail slots in concrete

and attached to tie section; formed from 0.097-inch-thick, steel sheet, galvanized after fabrication.

2. Tie Section for Concrete: Corrugated metal ties with dovetail tabs for inserting into dovetail slots in concrete and sized to extend to within 1 inch of masonry face.

D. Steel Drill Screws for Steel Studs: ASTM C 954 except manufactured with hex washer head and neoprene washer, No. 10 diameter by length required to penetrate steel stud flange by not less than 3 exposed threads, with organic polymer coating with salt-spray resistance to red rust of more than 800 hours per ASTM B117.

E. Products: Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Screw-Attached, Masonry-Veneer Anchors:

a. D/A 210 with D/A 700-708; Dur-O-Wal, Inc. b. 315-D with 316; Heckman Building Products, Inc. c. DW-10HS; Hohmann & Barnard, Inc. d. 1004, Type III; Masonry Reinforcing Corporation of America.

2. Organic-Polymer-Coated, Steel Drill Screws: a. Dril-Flex; Elco Industries, Inc.


b. Traxx; ITW-Buildex. c. Approved equal

2.11 Embedded Flashing Materials A. Concealed Flashing: use the following, unless otherwise indicated:

1. Copper-Laminated Flashing: Manufacturer's standard laminated flashing consisting of 3-oz./sq. ft. sheet copper bonded to waterproof creped kraft paper

both sides. Use only where flashing is fully concealed in masonry. B. Adhesives, Primers, and Seam Tapes for Flashings: Flashing manufacturer's standard products

or products recommended by the flashing manufacturer for bonding flashing sheets to each other and to substrates.

2.12 Miscellaneous Masonry Accessories A. Compressible Filler: Premolded filler strips complying with ASTM D 1056, Grade 2A1;

compressible up to 35 percent; of width and thickness indicated; formulated from neoprene. C. Preformed Control-Joint Gaskets: Material as indicated below, designed to fit standard sash

block and to maintain lateral stability in masonry wall; size and configuration as indicated. 1. PVC: ASTM D 2287, Type PVC-65406.

D. Bond-Breaker Strips: Asphalt-saturated, organic roofing felt complying with ASTM D 226, Type I (No. 15 asphalt felt).

E. Cavity Drainage Material: 1 inch thick, free draining mesh; made from high density polyethylene strands and shaped or stepped to avoid being clogged by mortar droppings.

Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

“Mortar Net” by Mortar Net USA, LTd; “Mortar Net” by Sandell Manufacturing Company, Inc; or “Mortar Break” by Advanced Building Products, Inc.

2.13 Cavity Wall Insulation NOT USED A. General: Install rigid cavity wall insulation where shown on the drawings. B. Extruded-Polystyrene Board Insulation: Rigid, cellular, polystyrene thermal insulation with

closed cells and integral high-density skin; formed by the expansion of polystyrene base resin in an extrusion process to comply with ASTM C 578.

C. Adhesive: Type recommended by insulation board manufacturer for application indicated.

Products: Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

“Foamular 250” by Owens-Corning, Inc.; “Amofoam-SB” by Tenneco Building Products Co.; or “Cavitymate Plus” by Dow Chemical USA.

2.14 Mortar and Grout Mixes A. General: Do not use admixtures, including pigments, air-entraining agents,

accelerators, retarders, water-repellent agents, antifreeze compounds, or other admixtures, unless otherwise indicated. Do not use calcium chloride in mortar or grout.


B. Preblended, Dry Mortar Mix: Furnish dry mortar ingredients in the form of a preblended mix. Measure quantities by weight to ensure accurate proportions, and thoroughly blend ingredients before delivering to Project site.

C. Mortar for Unit Masonry: Comply with ASTM C 270, Property Specification. 1. For reinforced masonry and where indicated, use Type S. 2. Grout for Unit Masonry: Comply with ASTM C 476. 3. Use grout of type indicated or, if not otherwise indicated, of type (fine or coarse) that

will comply with Table 5 of ACI 530.1/ASCE 6/TMS 602 for dimensions of grout spaces and pour height.

4. Provide grout with a slump of 8 to 11 inches as measured according to ASTM C 143.

PART III - EXECUTION

3.1 Examination A. Examine conditions, with Installer present, for compliance with requirements for

installation tolerances and other conditions affecting performance. Proceed with installation only after unsatisfactory conditions have been corrected. 1. Verify that foundations are within tolerances specified. 2. Verify that reinforcing dowels are properly placed. 3. Proceed with installation only after unsatisfactory conditions have been

corrected. B. Before installation, examine rough-in and built-in construction to verify actual

locations of piping connections.

3.2 Installation, General A. Thickness: Build cavity and composite walls and other masonry construction to the full

thickness shown. Build single-wythe walls to the actual widths of masonry units, using units of widths indicated.

B. Build chases and recesses to accommodate items specified in this Section and in other Sections of the Specifications.

C. Leave openings for equipment to be installed before completing masonry. After installing equipment, complete masonry to match the construction immediately adjacent to the opening.

D. Cut clay and concrete masonry units with motor-driven saws to provide clean, sharp, unchipped edges. Cut units as required to provide a continuous pattern and to fit adjoining construction. Where possible, use full-size units without cutting. Allow units cut with water-cooled saws to dry before placing, unless wetting of units is specified. Install cut units with cut surfaces and, where possible, cut edges concealed.

E. Cut cast stone (special finish masonry) units with wet saw. Pre-soak units using clean water prior to cutting. Clean cut units using a stiff fiber brush and clean water. Allow units to surface dry prior to placement.

F. Select and arrange units for exposed unit masonry to produce a uniform blend of colors and textures.

3.3 Construction Tolerances A. Comply with tolerances in ACI 530.1/ASCE 6/TMS 602 and the following: B. For conspicuous vertical lines, such as external corners, door jambs, reveals, and expansion

and control joints, do not vary from plumb by more than 1/4 inch in 20 feet, nor 1/2 inch maximum.


C. For vertical alignment of exposed head joints, do not vary from plumb by more than 1/4 inch in 10 feet, nor 1/2 inch maximum.

D. For conspicuous horizontal lines, such as exposed lintels, sills, parapets, and reveals, do not vary from level by more than 1/4 inch in 20 feet, nor 1/2 inch maximum.

E. For exposed bed joints, do not vary from thickness indicated by more than plus or minus 1/8 inch. Do not vary from bed-joint thickness of adjacent courses by more than 1/8 inch.

F. For exposed head joints, do not vary from thickness indicated by more than plus or minus 1/8 inch. Do not vary from adjacent bed-joint and head-joint thicknesses by more than 1/8 inch.

3.4 Laying Masonry Walls A. Lay out walls in advance for accurate spacing of surface bond patterns with uniform joint

thicknesses and for accurate location of openings, movement-type joints, returns, and offsets. Avoid using less-than-half-size units, particularly at corners, jambs, and, where possible, at other locations.

B. Bond Pattern for Exposed Masonry: Lay exposed masonry in the following bond pattern unless otherwise indicated; do not use units with less than nominal 2-inch horizontal face dimensions at corners or jambs. 1. ONE-HALF RUNNING BOND (not 1/3 running bond) with vertical joint in each

course centered on units in courses above and below. See corner detail on drawings. C. Lay concealed masonry with all units in a wythe in running bond or bonded by lapping not

less than 2 inches. Bond and interlock each course of each wythe at corners. Do not use units with less than nominal 4-inch horizontal face dimensions at corners or jambs.

D. Stopping and Resuming Work: In each course, rack back one-half unit length for one-half running bond; do not tooth. Clean exposed surfaces of set masonry, wet clay masonry units lightly if required, and remove loose masonry units and mortar before laying fresh masonry.

E. Built-in Work: As construction progresses, build in items specified under this and other Sections of the Specifications. Fill in solidly with masonry around built-in items.

F. Fill space between hollow-metal frames and masonry solidly with mortar, unless otherwise indicated.

G. Where built-in items are to be embedded in cores of hollow masonry units, place a layer of metal lath in the joint below and rod mortar or grout into core.

H. Fill cores in hollow concrete masonry units with grout 24 inches under bearing plates, beams, lintels, posts, and similar items, unless otherwise indicated.

I. Build non-load-bearing interior partitions full height of story to underside of solid floor or roof structure above, unless otherwise indicated. 1. Install compressible filler in joint between top of partition and underside of

structure above. 2. At fire-rated partitions, install firestopping in joint between top of partition and

underside of structure above to comply with Division 7, Section 07270, “Firestopping”.

3.5 Mortar Bedding And Jointing A. Lay hollow masonry units as follows:

1. With full mortar coverage on horizontal and vertical face shells.


2. Bed webs in mortar in starting course on footings and in all courses of piers, columns, and pilasters, and where adjacent to cells or cavities to be filled with grout.

3. For starting course on footings where cells are not grouted, spread out full mortar bed, including areas under cells.

B. Lay solid brick-size and cast stone (special finish masonry) units with completely filled bed and head joints; butter ends with sufficient mortar to fill head joints and shove into place. Do not deeply furrow bed joints or slush head joints. 1. At cavity walls, bevel beds away from cavity, to minimize mortar protrusions into

cavity. As work progresses, trowel mortar fins protruding into cavity flat against the cavity face of the brick.

C. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than the joint thickness, unless otherwise indicated.

D. Cut joints flush for masonry walls to receive ceramic tile finishes, unless otherwise indicated.

E. Where textured units are indicated, provide special corner unit that includes texture on all exposed faces.

3.6 Bonding of Multiwythe Masonry A. Use individual metal ties installed in horizontal joints to bond wythes together. Provide ties as

shown, but not to exceed 16 inches o.c. horizontally and 16 o.c. vertically. Stagger ties in alternate courses. Provide additional ties within 12 inches of openings and space not more than 24 inches apart around perimeter of openings. At intersecting and abutting walls, provide ties at no more than 24 inches o.c. vertically.

B. Corners: Provide interlocking masonry unit bond in each wythe and course at corners, unless otherwise indicated. 1. Provide continuity with masonry joint reinforcement at corners by using

prefabricated "L" units as well as masonry bonding. C. Intersecting and Abutting Walls: Unless vertical expansion or control joints are shown at

juncture, bond walls together as follows: 1. Provide continuity with masonry joint reinforcement by using prefabricated "T" units.

3.7 Cavities A. Keep cavities clean of mortar droppings and other materials during construction. B. Coat cavity face of backup wythe to comply with Division 7 Section 07160

"Bituminous Dampproofing." C. Installing Cavity-Wall Insulation: Place small dabs of adhesive, spaced approximately 12 inches

o.c. both ways, on inside face of insulation boards, or attach with plastic fasteners designed for this purpose. Fit courses of insulation between wall ties and other confining obstructions in cavity, with edges butted tightly both ways. Press units firmly against inside wythe of masonry or other construction as shown. 1. Fill cracks and open gaps in insulation with crack sealer compatible with

insulation and masonry.

3.8 Masonry Joint Reinforcement A. General: Provide continuous masonry joint reinforcement as indicated. Install entire length of

longitudinal side rods in mortar with a minimum cover of 1/2 inch. Lap reinforcement a minimum of 6 inches. 1. Space reinforcement not more than 16 inches o.c.


2. Space reinforcement not more than 8 inches o.c. in foundation walls and parapet walls. 3. Provide reinforcement not more than 8 inches above and below wall openings and

extending 12 inches beyond openings. B. Cut or interrupt joint reinforcement at control and expansion joints, unless otherwise

indicated. C. Provide continuity at corners and wall intersections by using prefabricated "L" and "T" sections.

Cut and bend reinforcing units as directed by manufacturer for continuity at returns, offsets, column fireproofing, pipe enclosures, and other special conditions.

3.9 Anchoring Masonry Veneers A. Anchor masonry veneers to wall framing with masonry-veneer anchors to comply with the

following requirements: 1. Fasten each anchor section through sheathing to wall framing with two metal

fasteners of type indicated. 2. Embed tie sections in masonry joints minimum one half the depth of the

masonry. Provide air space between back of masonry veneer and face of sheathing or insulation as indicated on the drawings.

3. Locate anchor sections to allow maximum vertical differential movement of ties up and down.

4. Space anchors as indicated, but not more than 16 inches o.c. vertically and 16 inches o.c. horizontally. Install additional anchors within 12 inches of openings and at intervals, not exceeding 24 inches, around perimeter.

3.10 Control and Expansion Joints A. General: Install control and expansion joints in unit masonry where indicated. Build-in related

items as masonry progresses. Do not form a continuous span through movement joints unless provisions are made to prevent in-plane restraint of wall or partition movement.

B. Form control joints in concrete masonry as follows: 1. Install preformed control-joint gaskets designed to fit standard sash block.

C. Form control or expansion joints in brick made from clay or shale as follows: 1. Form open joint of width indicated, but not less than 3/8” for installation of sealant

and backer rod specified in Division 7, Section 07900 “Joint Sealants.” Keep joint free and clear of mortar.

3.11 Lintels A. Install steel lintels where indicated. B. Provide masonry lintels where shown and where openings of more than 12 inches for brick-

size units and 24 inches for block-size units are shown without structural steel or other supporting lintels. 1. Provide prefabricated or built-in-place masonry lintels. Use specially formed bond beam

units with reinforcing bars placed as indicated and filled with coarse grout. Cure precast lintels before handling and installing. Temporarily support built-in-place lintels until cured.

C. Provide minimum bearing of 8 inches at each jamb, unless otherwise indicated.

3.12 Flashing, Weep Holes, and Vents A. General: Install embedded flashing and weep holes in masonry at shelf angles, lintels, ledges,

other obstructions to downward flow of water in wall, and where indicated.


B. Prepare masonry surfaces so they are smooth and free from projections that could puncture flashing. Unless otherwise indicated, place through-wall flashing on sloping bed of mortar and cover with mortar. Before covering with mortar, seal penetrations in flashing with adhesive, sealant, or tape as recommended by flashing manufacturer.

C. Install flashing as follows: 1. At multiwythe masonry walls, including cavity walls, extend flashing from exterior face

of outer wythe of masonry, through outer wythe, turned up a minimum of 8 inches, and through inner wythe to within 1/2 inch of the interior face of the wall in exposed masonry. Where interior surface of inner wythe is concealed by furring, carry flashing completely through inner wythe and turn flashing up approximately 2 inches, unless otherwise indicated.

2. At masonry-veneer walls, extend flashing from exterior face of veneer, through veneer, up face of sheathing at least 8 inches, and behind air-infiltration barrier or building paper.

3. At lintels and shelf angles, extend flashing a minimum of 4 inches into masonry at each end. At heads and sills, extend flashing 4 inches at ends and turn flashing up not less than one course to form a pan.

4. Cut flashing off flush with face of wall after masonry wall construction is completed.

D. Install weep holes in the head joints in exterior wythes of the first course of masonry immediately above embedded flashing and as follows: 1. Use open head joints to form weep holes. 2. Space weep holes 24 inches o.c. maximum. 3. Place cavity drainage material immediately above flashing in cavities.

E. Install reglets and nailers for flashing and other related construction where they are shown to be built into masonry.

3.13 Repairing, Pointing, and Cleaning A. Remove and replace masonry units that are loose, chipped, broken, stained, or otherwise

damaged or that do not match adjoining units. Install new units to match adjoining units; install in fresh mortar, pointed to eliminate evidence of replacement.

B. Pointing: During the tooling of joints, enlarge voids and holes, except weep holes, and completely fill with mortar. Point up joints, including corners, openings, and adjacent construction, to provide a neat, uniform appearance. Prepare joints for sealant application.

C. In-Progress Cleaning: Clean unit masonry as work progresses by dry brushing to remove mortar fins and smears before tooling joints.

D. Final Cleaning: After mortar is thoroughly set and cured, clean exposed masonry as follows: 1. Remove large mortar particles by hand with wooden paddles and nonmetallic scrape

hoes or chisels. 2. Test cleaning methods on sample wall panel; leave one-half of panel uncleaned for

comparison purposes. Obtain Architect’s approval of sample cleaning before proceeding with cleaning of masonry.

3. Protect adjacent stone and nonmasonry surfaces from contact with cleaner by covering them with liquid strippable masking agent, polyethylene film, or waterproof masking tape.



STRUCTURAL STEEL FRAMING 051200 - 1

SECTION 051200 - STRUCTURAL STEEL FRAMING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Structural steel. 2. Grout.

B. Related Sections include the following:

1. Division 01 Section "Quality Requirements" for independent testing agency procedures and administrative requirements.

1.3 DEFINITIONS

A. Structural Steel: Elements of structural-steel frame, as classified by AISC's "Code of Standard Practice for Steel Buildings and Bridges," that support design loads.

1.4 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Shop Drawings: Show fabrication of structural-steel components.

1. Include details of cuts, connections, splices, camber, holes, and other pertinent data. 2. Include embedment drawings. 3. Indicate welds by standard AWS symbols, distinguishing between shop and field welds, and show

size, length, and type of each weld. 4. Indicate type, size, and length of bolts, distinguishing between shop and field bolts.

C. Welding certificates.

D. Mill Test Reports: Signed by manufacturers certifying that the following products comply with requirements:

1. Structural steel including chemical and physical properties. 2. Bolts, nuts, and washers including mechanical properties and chemical analysis. 3. Direct-tension indicators. 4. Tension-control, high-strength bolt-nut-washer assemblies. 5. Shop primers. 6. Nonshrink grout.


E. Source quality-control test reports.


A. Welding: Qualify procedures and personnel according to AWS D1.1, "Structural Welding Code--Steel."

B. Comply with applicable provisions of the following specifications and documents:

1. AISC's "Code of Standard Practice for Steel Buildings and Bridges." 2. AISC's "Seismic Provisions for Structural Steel Buildings" and "Supplement No. 2." 3. AISC's "Specification for Structural Steel Buildings--Allowable Stress Design and Plastic

Design”. 4. AISC's "Specification for the Design of Steel Hollow Structural Sections." 5. RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts."

1.6 DELIVERY, STORAGE, AND HANDLING

A. Store materials to permit easy access for inspection and identification. Keep steel members off ground and spaced by using pallets, dunnage, or other supports and spacers. Protect steel members and packaged materials from erosion and deterioration.

1. Store fasteners in a protected place. Clean and relubricate bolts and nuts that become dry or rusty before use.

2. Do not store materials on structure in a manner that might cause distortion, damage, or overload to members or supporting structures. Repair or replace damaged materials or structures as directed.

1.7 COORDINATION

A. Furnish anchorage items to be embedded in or attached to other construction without delaying the Work. Provide setting diagrams, sheet metal templates, instructions, and directions for installation.

PART 2 - PRODUCTS

2.1 STRUCTURAL-STEEL MATERIALS

A. W-Shapes: ASTM A 992.

B. Channels and Angles: ASTM A 36.

C. Plate and Bar: ASTM A 36.

D. Cold-Formed Hollow Structural Sections: ASTM A 500, Grade B, structural tubing.

E. Steel Pipe: ASTM A 53/A 53M, Type E or S, Grade B.

1. Weight Class: Standard. 2. Finish: Black, except where indicated to be galvanized.

F. Welding Electrodes: Comply with AWS requirements.


2.2 BOLTS, CONNECTORS, AND ANCHORS

A. High-Strength Bolts, Nuts, and Washers: ASTM A 325, Type 1, heavy hex steel structural bolts; ASTM A 563 heavy hex carbon-steel nuts; and ASTM F 436 hardened carbon-steel washers.

1. Finish: Plain.

B. Unheaded Anchor Rods: ASTM F 1554, Grade 36.

1. Configuration: Straight. 2. Nuts: ASTM A 563 heavy hex carbon steel. 3. Plate Washers: ASTM A 36/A 36M carbon steel. 4. Washers: ASTM F 436 hardened carbon steel. 5. Finish: Plain.

C. Headed Anchor Rods: ASTM F 1554, Grade 36, straight.

1. Nuts: ASTM A 563 heavy hex carbon steel. 2. Plate Washers: ASTM A 36/A 36M carbon steel. 3. Washers: ASTM F 436 hardened carbon steel. 4. Finish: Plain.

2.3 PRIMER

A. Primer: Fabricator's standard lead- and chromate-free, nonasphaltic, rust-inhibiting primer.

B. Galvanizing Repair Paint: ASTM A 780.

2.4 GROUT

A. Nonmetallic, Shrinkage-Resistant Grout: ASTM C 1107, factory-packaged, nonmetallic aggregate grout, noncorrosive, nonstaining, mixed with water to consistency suitable for application and a 30-minute working time.

2.5 FABRICATION

A. Structural Steel: Fabricate and assemble in shop to greatest extent possible. Fabricate according to AISC's "Code of Standard Practice for Steel Buildings and Bridges" and AISC's "Specification for Structural Steel Buildings--Allowable Stress Design and Plastic Design."

1. Camber structural-steel members where indicated. 2. Identify high-strength structural steel according to ASTM A 6/ A 6M and maintain markings until

structural steel has been erected. 3. Mark and match-mark materials for field assembly. 4. Complete structural-steel assemblies, including welding of units, before starting shop-priming

operations.

B. Thermal Cutting: Perform thermal cutting by machine to greatest extent possible.

1. Plane thermally cut edges to be welded to comply with requirements in AWS D1.1.


C. Bolt Holes: Cut, drill, mechanically thermal cut, or punch standard bolt holes perpendicular to metal surfaces.

D. Finishing: Accurately finish ends of columns and other members transmitting bearing loads.

E. Cleaning: Clean and prepare steel surfaces that are to remain unpainted according to SSPC-SP 1, "Solvent Cleaning."

F. Steel Wall-Opening Framing: Select true and straight members for fabricating steel wall-

G. Holes: Provide holes required for securing other work to structural steel and for passage of other work through steel framing members.

1. Cut, drill, or punch holes perpendicular to steel surfaces. 2. Base-Plate Holes: Cut, drill, mechanically thermal cut, or punch holes perpendicular to steel

surfaces. 3. Weld threaded nuts to framing and other specialty items indicated to receive other work.

2.6 SHOP CONNECTIONS

A. High-Strength Bolts: Shop install high-strength bolts according to RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts" for type of bolt and type of joint specified.

1. Joint Type: Snug tightened.

B. Weld Connections: Comply with AWS D1.1 for welding procedure specifications, tolerances, appearance, and quality of welds and for methods used in correcting welding work.

1. Remove backing bars or runoff tabs, back gouge, and grind steel smooth. 2. Assemble and weld built-up sections by methods that will maintain true alignment of axes without

exceeding tolerances of AISC's "Code of Standard Practice for Steel Buildings and Bridges" for mill material.

3. Verify that weld sizes, fabrication sequence, and equipment used for architecturally exposed structural steel will limit distortions to allowable tolerances. Prevent weld show-through on exposed steel surfaces.

a. Grind butt welds flush. b. Grind or fill exposed fillet welds to smooth profile. Dress exposed welds.

2.7 GALVANIZING

A. Hot-Dip Galvanized Finish: Apply zinc coating by the hot-dip process to structural steel according to ASTM A 123/ A 123M.

1. Fill vent holes and grind smooth after galvanizing. 2. Galvanize lintels and shelf angles attached to structural-steel frame and located in exterior walls.

2.8 SOURCE QUALITY CONTROL

A. Owner will engage an independent testing and inspecting agency to perform shop tests and inspections and prepare test reports.


1. Provide testing agency with access to places where structural-steel work is being fabricated or produced to perform tests and inspections.

B. Correct deficiencies in Work that test reports and inspections indicate does not comply with the Contract Documents.

C. Bolted Connections: Shop-bolted connections will be tested and inspected according to RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts."

D. Welded Connections: In addition to visual inspection, shop-welded connections will be tested and inspected according to AWS D1.1 and the following inspection procedures, at testing agency's option:

1. Liquid Penetrant Inspection: ASTM E 165. 2. Magnetic Particle Inspection: ASTM E 709; performed on root pass and on finished weld. Cracks

or zones of incomplete fusion or penetration will not be accepted. 3. Ultrasonic Inspection: ASTM E 164. 4. Radiographic Inspection: ASTM E 94.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify elevations of concrete- and masonry-bearing surfaces and locations of anchor rods, bearing plates, and other embedments, with steel erector present, for compliance with requirements.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Provide temporary shores, guys, braces, and other supports during erection to keep structural steel secure, plumb, and in alignment against temporary construction loads and loads equal in intensity to design loads. Remove temporary supports when permanent structural steel, connections, and bracing are in place, unless otherwise indicated.

1. Do not remove temporary shoring supporting composite deck construction until cast-in-place concrete has attained its design compressive strength.

3.3 ERECTION

A. Set structural steel accurately in locations and to elevations indicated and according to AISC's "Code of Standard Practice for Steel Buildings and Bridges" and "Specification for Structural Steel Buildings--Allowable Stress Design and Plastic Design."

B. Base Plates: Clean concrete- and masonry-bearing surfaces of bond-reducing materials, and roughen surfaces prior to setting base plates. Clean bottom surface of base plates.

1. Set base plates for structural members on wedges, shims, or setting nuts as required. 2. Weld plate washers to top of base plate. 3. Snug-tighten anchor rods after supported members have been positioned and plumbed. Do not

remove wedges or shims but, if protruding, cut off flush with edge of base plate before packing with grout.


4. Promptly pack grout solidly between bearing surfaces and base plates so no voids remain. Neatly finish exposed surfaces; protect grout and allow to cure. Comply with manufacturer's written installation instructions for shrinkage-resistant grouts.

C. Maintain erection tolerances of structural steel and architecturally exposed structural steel within AISC's "Code of Standard Practice for Steel Buildings and Bridges."

D. Align and adjust various members forming part of complete frame or structure before permanently fastening. Before assembly, clean bearing surfaces and other surfaces that will be in permanent contact with members. Perform necessary adjustments to compensate for discrepancies in elevations and alignment.

1. Level and plumb individual members of structure. 2. Make allowances for difference between temperature at time of erection and mean temperature

when structure is completed and in service.

E. Splice members only where indicated.

F. Remove erection bolts on welded, architecturally exposed structural steel; fill holes with plug welds; and grind smooth at exposed surfaces.

G. Do not use thermal cutting during erection unless approved by Architect. .

H. Do not enlarge unfair holes in members by burning or using drift pins. Ream holes that must be enlarged to admit bolts.

3.4 FIELD CONNECTIONS

A. High-Strength Bolts: Install high-strength bolts according to RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts" for type of bolt and type of joint specified.

1. Joint Type: Snug tightened.

B. Weld Connections: Comply with AWS D1.1 for welding procedure specifications, tolerances, appearance, and quality of welds and for methods used in correcting welding work.

1. Comply with AISC's "Code of Standard Practice for Steel Buildings and Bridges" and "Specification for Structural Steel Buildings--Allowable Stress Design and Plastic Design"for bearing, adequacy of temporary connections, alignment, and removal of paint on surfaces adjacent to field welds.

2. Remove backing bars or runoff tabs, back gouge, and grind steel smooth. 3. Assemble and weld built-up sections by methods that will maintain true alignment of axes without

exceeding tolerances of AISC's "Code of Standard Practice for Steel Buildings and Bridges" for mill material.

4. Verify that weld sizes, fabrication sequence, and equipment used for architecturally exposed structural steel will limit distortions to allowable tolerances.


A. Testing Agency: Owner will engage a qualified independent testing and inspecting agency to inspect field welds and high-strength bolted connections.


B. Bolted Connections: Shop-bolted connections will be tested and inspected according to RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts."

C. Welded Connections: Field welds will be visually inspected according to AWS D1.1.

1. In addition to visual inspection, field welds will be tested according to AWS D1.1 and the following inspection procedures, at testing agency's option:

a. Liquid Penetrant Inspection: ASTM E 165. b. Magnetic Particle Inspection: ASTM E 709; performed on root pass and on finished weld.

Cracks or zones of incomplete fusion or penetration will not be accepted. c. Ultrasonic Inspection: ASTM E 164. d. Radiographic Inspection: ASTM E 94.

D. In addition to visual inspection, test and inspect field-welded shear connectors according to requirements in AWS D1.1 for stud welding and as follows:

1. Perform bend tests if visual inspections reveal either a less-than- continuous 360-degree flash or welding repairs to any shear connector.

2. Conduct tests on additional shear connectors if weld fracture occurs on shear connectors already tested, according to requirements in AWS D1.1.

E. Correct deficiencies in Work that test reports and inspections indicate does not comply with the Contract Documents.

3.6 REPAIRS AND PROTECTION

A. Repair damaged galvanized coatings on galvanized items with galvanized repair paint according to ASTM A 780 and manufacturer's written instructions.


GENERAL PROVISIONS - MECHANICAL 230000 - 1

SECTION 230000 - GENERAL PROVISIONS – MECHANICAL PART 1 - GENERAL 1.1 SCOPE

A. Section covers work done by the Mechanical Contractors. That portion of the work, which is applicable to each trade, is specified in detail in the following sections: 1) Section 230500, Heating, Ventilation and Air Conditioning 2) Section 230593, Testing, Adjusting and Balancing 3) Section 230700, Mechanical Insulation 4) Section 230900, Controls and Instrumentation 5) Section 232100, Basic Piping Materials and Methods 6) Section 232113, Electrical equipment for Mechanical 7) Section 232123, Pumps 8) Section 232500, Water Treatment Systems 9) Section 236246, Refrigeration Equipment 10) Section 238500, Variable Frequency Drives

B. ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED.

C. Minor details necessary for the proper installation and operation (but not usually shown or specified) shall be included in the work, the same as if herein specified or shown.

C. Intention of the specifications and drawings is to call for finished work, tested and ready for operation. Wherever the word "provide" is used, it shall mean "furnish and install complete and ready for use."

D. Where items of equipment are specified in the singular; Contractor shall provide and install the quantity items of equipment as indicated on the drawings, and as required for complete system.

E. Where discrepancies arise between the specifications and drawings, and the Engineer cannot be contacted within seven (7) days prior to bidding, contractor shall include the more expensive product, material, method, etc in the bid.

1.2 DEFINITION

A. The word "Contractor" as used in this section of the specifications refers to the Mechanical. The work "provide" means furnish, fabricate, complete, install, erect, including all labor and incidental materials necessary to complete in place and ready for operation or use, the items referred to or described herein, and/or as shown or referred to on the contract drawings.

1.3 CODES, PERMITS, INSPECTION FEES, SAFETY STANDARDS

A. Work shall be installed in complete accordance with State, Municipal and Local Codes. Contractor shall obtain all necessary licenses, etc., and pay for all inspections required by agencies having jurisdictional authority in connection with this work. Where applicable, contractor shall provide in rooms with pressure vessels, approved State Operating Certificates mounted under glass.

B. Contractor shall be responsible for adhering to all O.S.H.A. Standard Requirements. C. Contractor shall give all necessary notices, and pay all sales taxes, fees and other costs, including utility

connections or extensions, in connection with his work; file all necessary plans, prepare all documents and obtain all necessary approvals of all authorities having jurisdiction. Obtain all required certificates of inspection for his work and deliver same to Engineer before request for acceptance and final payment of the work. Water and sewer tap fees will be paid by Owner.

D. Contractor shall include in his work, without extra cost to the Owner, any labor, materials, service, apparatus, drawings, in order to comply with all applicable laws, ordinances, rules and regulations, whether or not shown on drawings and/or specified.

E. Materials furnished and work installed shall comply with the North Carolina State Building Code, Building Code Mechanical and Building Code Energy, UL, AGA, OSHA, NSF, and with the requirements of all governmental departments having jurisdiction.

F. Materials and equipment for the electrical portion of the mechanical and plumbing system shall bear the


approval label, and shall be listed by the Underwriters' Laboratories, Inc. G. Work shall be done in accordance with all North Carolina Building Codes, and requirements of

governmental agencies having jurisdiction. 1.4 COORDINATION AND COOPERATION

A. Contractor shall coordinate the work and equipment of this section with all other work and equipment specified elsewhere in order to assure a complete and satisfactory installation.

B. Contractor shall visit the site and examine the premises to insure that he is familiar with the existing conditions and requirements for performing this work before submitting his bid.

C. Contractor is referred to the General and Special Conditions of the contract which form a part and are included in this section of the specifications and shall be binding on this contractor.

D. Contractor shall cooperate with all other contractors on the job and coordinate his work so as not to interfere with any other work or equipment, and shall schedule his work so as not to cause delay of any work of other contractors.

E. Contractor shall be responsible to see that where ductwork and pipes are running in the same chase space that ample room is provided for both services. Contractor shall coordinate his work with all electrical work to see that no conduit or buss duct is located so as to interfere with the ductwork or piping as shown.

F. If one contractor damages the work of another, that contractor shall be responsible for correcting/replacing the damaged work.

G. HVAC and Electrical Contractors must include in their critical path schedule the provision for electrical power, natural gas service, water, sewer and storm drainage utilities to be fully functional and available to enable the Mechanical systems to be operated as required to facilitate the installation of the ceiling tile and carpet. See Item 3.22 for requirements of 18-month extended system warranty.

1.5 CONTRACTOR'S QUALIFICATIONS

A. By bidding on this project, Contractor affirms that they have sufficient general knowledge and experience to anticipate the needs of a construction of this nature. Contractor and job Superintendent must have valid, current North Carolina and Charlotte Mecklenburg Licenses. Contractor shall furnish all items required to complete the construction in accordance with reasonable interpretation of the intent of the drawings and the specifications. Any minor items required by code, law or regulations shall be provided whether or not specified or specifically shown where it is a part of a major item of equipment, or of the control system specified or shown on the plans.

1.6 DUTIES OF CONTRACTOR

A. Contractor shall furnish and install all materials called for in these specifications and accompanying drawings, and shall furnish the apparatus complete in every respect. Anything called for in the specifications and not shown on the drawings or shown on the drawings and not called for in the specifications shall be furnished as if called for in both.

B. Contractor is responsible for familiarizing himself with the details of the construction of the building. Work under these specifications installed improperly or which requires changing due to improper reading or interpretation of building plans shall be corrected and changed as directed by the Engineer without additional cost to the Owner.

C. Contractor shall follow drawings in laying out work and check drawings of other trades to verify spaces in which work will be installed. Ductwork and piping shall be installed to maintain maximum head room and space conditions at all points. Where head room or space conditions appear inadequate, Engineer shall be notified before proceeding with installation.

D. Plans are diagrammatic and are not intended to show each and every fitting, valve, pipe, pipe hanger, or complete detail of all the work to be done but are for the purpose of illustrating the type of system, showing pipe and duct sizes, etc., and special conditions considered necessary for the experienced mechanic to take off his materials and lay out his work. Contractor shall be responsible for taking such measurements as may be necessary at the job and adapting his work to local conditions.

E. Where conditions occur which require deviations from the drawings and specifications such changes required shall be made by contractor without expense to Owner, providing such changes do not require furnishing more materials or performing more labor than the true intent of the drawings and specifications demand. It is understood that while the drawings are to be followed as closely as circumstances will


permit, contractor is held responsible for the installation of the system according to the true intent and meaning of the drawings. Work or instructions not entirely clear in the drawings and specifications will be fully explained upon application to Engineer. Should conditions arise where in the judgment of the contractor certain changes will be advisable, contractor shall communicate with Engineer and secure his approval of changes before going ahead with the work.

F. The right to make any reasonable change in location of apparatus, equipment, routing of piping and ductwork, up to the time of roughing in, is reserved by the Engineer without involving any additional expense to the Owner.

G. Contractor shall, upon completion of the work, remove all debris that has accumulated during the progress of the work and shall leave the premises clean and orderly.

1.7 DRAWINGS

A. Drawings show arrangement of the system desired and shall be followed as closely as practical. Because of the small scale of the drawings, not all offsets and bends can be shown and these shall be worked out on the job without extra charge to fully complete the intent of the plans. Should job conditions or substitution of equipment necessitate a rearrangement, the contractor shall prepare and submit for approval scaled drawings of such arrangement before any work is begun.

B. Contractor shall maintain a record set of construction drawings on site and shall mark up changes where installation varies from design, in accordance with Division 1 requirements for Construction Record drawings.

1.8 SURVEYS AND MEASUREMENTS

A. Contractor shall base all measurements, both horizontal and vertical, from established benchmarks. All work shall agree with these established lines and levels. Verify all measurements at the site and check the correctness of same as related to the work.

B. Should contractor discover any discrepancy between actual measurements and those indicated which prevents following good practice or the intent of the drawings and specifications, he shall notify the Engineer and shall not proceed with his work until he has received instructions from the Engineer.

1.9 SUBSTITUTIONS PRIOR TO BID

A. Bidding Contractor may submit equipment or materials substitutions prior to bid date in compliance with Division 1 Specifications, Supplementary General Conditions and Owners Supplementary General Conditions.

B. Requests must be made in writing from the bidding contractor along with information to support the request.

C. Requests from product vendors or representatives will not be considered

1.10 SHOP DRAWINGS A. Contractor shall submit within ten (10) days after award of contract, six (6) copies of a complete list of all

manufacturers to be used on job. No substitutions shall be allowed after this date except in extenuating circumstances as determined by the Engineer. Submission of a manufacturer's name or equipment number on this list shall not be considered as equipment approval by the Engineer.

B. Contractor shall submit for approval six (6) sets of detailed shop drawings of all equipment and all material required to complete the project. No materials or equipment shall be delivered to the job site or installed until Contractor has in his possession approved shop drawings for the particular material or equipment. Shop drawings shall be complete as described herein. 1) Copies of appropriate specification sections shall be included with the submittals. Submittals

that do not include the specifications will not be reviewed and will be returned. Contractor shall check off each paragraph of the specification and note that the product will comply with or deviate from the specifications.

2) Detailed, dimensioned drawings or cuts, showing construction, size, arrangement, operating clearances, performance characteristics, and capacity. Each item of equipment proposed shall be standard catalog products of an established manufacturer and of equal quality, finish, performance and durability to that specified.

3) Samples, drawings, specifications, catalogs, submitted for approval, shall be properly labeled


indicating specific service for which material or equipment is to be used, Section and Article number of specifications governing, Contractor's name and name of job.

4) Catalogs, pamphlets, or other documents submitted to describe items on which approval is being requested, shall be specific and identification in catalog, pamphlets, etc., of item submitted shall be clearly marked. Data of a general nature will not be accepted. Data shall include copies of computation sheets indicating how unit capacity was determined where ratings are at other than standard conditions.

C. Approval rendered on shop drawings shall not be considered as a guarantee of quantities, measurements, or building conditions. Where drawings are approved, said approval does not imply that drawings have been checked in detail. Approval shall not relieve the Contractor from his responsibilities or necessity of furnishing material or performing work as required by the contract drawings and specifications.

D. Failure of the Contractor to submit shop drawings in ample time for checking shall not entitle him to an extension of contract time, and no claim for extension by reason of default shall be allowed.

E. Shop drawings and submittals shall be in the office of the Engineer within 30 days after the contracts have been awarded. Contractor shall be financially responsible for any price increase of shop drawing items from the time these drawings are issued until they are returned to the Contractor for purchase of items. No payment for any equipment or labor will be allowed until all major pieces of equipment specified have been submitted to the Engineer for approval.

F. Contractor shall keep on the job at all times copies of all approved shop drawings. G. Contractor shall review and approve shop drawings prior to submittal. Submitting contractor and GC

shall provide corporate stamp and approval on the cover sheet of each submittal. H. Contractor is reminded to attach manufacturer’s “Buy America” certification letter to each submittal on

this project (NO EXCEPTIONS). 1.11 UTILITIES

A. This contractor shall bear the cost of utilities required to perform his work under this contract. Where services such as electricity, water, sewer, etc., are provided by the General Contractor, this contractor shall be responsible directly to the General Contractor for his portion of the utilities as follows as agreed upon. or: Mechanical Contractor 15%, Plumbing Contractor 5%, Fire Protection Contractor 5% in accordance with JCR-36, N.C. AIA, Carolinas Branch, AGC Joint Cooperative Committee. Other services such as hoist, crane, etc., when provided by the General Contractor, shall be paid by this contractor as may be agreed upon.

1.12 GENERAL WORKMANSHIP

A. All work must be done by first class and experienced mechanics properly supervised, and it is understood that the Engineer has the right to stop any work that is not being properly done and has the right to demand that any incompetent workman be removed from the job and a competent workman be substituted therefore.

B. All work must be done in strict accordance with standards of ASME, ASHRAE and the building laws of all character in force in the locality where the apparatus is being installed. All work must also be in accordance with rules and regulations of the National Board of Fire Underwriters.

1.13 TEMPORARY SERVICE REQUIREMENTS

A. Refer to 015000 for temporary service requirements. PART 2 – PRODUCTS 2.01 MATERIALS AND EQUIPMENT

A. Materials and equipment shall be new and as specified or approved equal, as may be adjudged by the Engineer. Products/manufacturers cited are the preferred choices of the Engineer and are used to set forth and convey to bidders the general style, type character and quality of the desired product. However, all cited examples are used only to denote the quality standard of the product desired and do not restrict bidders to a specific brand, make, manufacturer or specific name. Requests for permission to substitute materials or products for those specified shall be made in writing prior to bidding by the Bidding Contractor to the Owner in accordance with paragraph 1.9 of this section. Requests after bidding will be


considered only if the specified materials are not available or cannot be provided to meet the project schedule. Contractor shall provide letter from the manufacturer. Requests shall be accompanied by six copies of drawings, photographs, catalogs, engineering data, etc., as necessary to fully identify and appraise the product. All requests to substitute materials for those specified must be made within ten days after the contract date. If the Contractor fails to submit this request within ten days, it shall be assumed that he does not wish to substitute any materials and they shall be furnished as specified.

B. Shop drawings and information submitted for approval or substitution shall be clearly identified to include all the items or features called for in the specifications and all of the rating data information included on the drawings or in the schedule. Brochures or printed information submitted to identify the product shall be clearly marked to point out the desired features and to show any variation in the materials submitted. Without the above markings and identifications, the data will be returned disapproved without comment. Exceptions to the specifications or non-compliance with the data scheduled shall be clearly marked to identify such exceptions.

C. The final determination of equality shall be as adjudged by the Engineer. Contractor shall be responsible for the full coordination and added costs to the project of the substituted equipment with all other aspects and trades involved with the project.

PART 3 - EXECUTION 3.1 OBSERVATION

A. Project shall be observed periodically as construction progresses. Contractor shall be responsible for notifying the Engineer at least 48 hours in advance when any work to be covered up is ready for inspection. No work will be covered up until after observation has been completed on such items as piping and insulation, etc.

B. The contractor shall notify the Engineer and Project Manager when work above ceiling is 90% complete for the purpose of an on site inspection. This notification shall be made a minimum of two (2) weeks prior to installation of ceiling.

3.2 ACCESSIBILITY

A. Contractor shall be responsible for the sufficiency of the size of shafts and chases, the adequate clearance in double partitions and hung ceilings for the proper installation of his work. He shall cooperate with the General Contractor and all other Contractors whose work is in the same space, and shall advise the General Contractor of his requirements. If space appears to be inadequate, he shall advise the Engineer prior to any installation. Such spaces and clearances shall, however, be kept to the minimum size required.

B. Contractor shall locate all equipment, which must be serviced, operated, or maintained in fully accessible positions. Equipment shall include, but is not limited to, valves, traps, cleanouts, motors, controllers, switchgear, and drain points. If required for better accessibility, furnish access doors for this purpose. Minor deviations from drawings may be made to allow for better accessibility, and any change shall be submitted for approval.

C. Contractor shall provide the exact locations of access panels for each concealed valve, control damper or other device requiring service. Access panels shall be provided and installed by the Mechanical Contractor. Locations of these panels shall be submitted in sufficient time to be installed in the normal course of work.

3.3 CONCEALED PIPE

A. Pipe in finished spaces shall be run concealed in floors, walls, partitions, and above ceilings unless otherwise noted. Piping exposed in occupied areas shall be provided with metal jacket over insulation or metal enclosure, suitable for painting by the general contractor.

B. Concealment of pipe and covering of same shall not be done until authorized by the Engineer after proper tests have been made. This applies to all interior work and exterior work.

C. Piping not in equipment room shall be run in concealed spaces or in chases unless noted otherwise. Contractor shall be responsible for and shall set all sleeves and advise the general contractor of chase spaces and holes required as building progresses. Failure to do so shall require this Contractor to have


holes cut and provide lintels where required. 3.4 PIPE WORK

A. Pipe work shown on the drawings and/or specifications or implied herein and required for a complete and operating system shall be installed by experienced mechanics in a neat and workmanlike manner, run horizontally and at right angles to walls and ceilings, and subject to the approval of the Engineer.

B. Because of the small scale of the drawings, it is not possible to indicate all offsets, fittings and accessories which may be required. It shall be the responsibility of the Contractor to furnish and install all materials and equipment required for the operating system within the full intent of the drawings.

C. Piping shall be installed as shown on the plans and with strict conformity to the sizes listed and due provisions for expansion and contraction.

3.5 SLEEVES AND PLATES

A. Contractor shall provide and locate all sleeves and inserts required before the floors and walls are built, or shall be responsible for cost of cutting and patching required where sleeves and inserts were not installed, or where incorrectly located. Contractor shall do all drilling required for the installation of his hangers.

B. Sleeves shall be provided for all piping passing through concrete floor slabs and concrete, masonry, tile and gypsum wall construction. Sleeves shall not be provided for piping running imbedded in concrete or in insulating concrete slabs on grade.

C. Sleeves placed in exterior walls below grade shall have the space between the pipe or conduit and the sleeves packed with sealant and made completely watertight.

D. Where pipe motion due to expansion and contraction will occur, sleeves shall be of sufficient diameter to permit free movement of pipe. Where sleeves pass insulated pipes, the sleeves shall be large enough to pass both pipe and insulation. Floor and wall construction finishes shall be checked to determine proper length of sleeves for various locations; make actual lengths to suit the following: 1) Terminate sleeves flush with walls, partitions and ceiling. 2) In areas where pipes are concealed, as in chases, terminate sleeves flush with floor. 3) In all areas where pipes are exposed, extend sleeves 1/4" above finished floor, except in rooms

having floor drains, where sleeves shall be extended 3/4" above floor. E. Sleeves shall be constructed of Schedule 40 black steel pipe unless otherwise indicated on the drawings. F. Fasten sleeves securely in floors, walls, so that they will not become displaced when concrete is poured or

when other construction is built around them. Take precautions to prevent concrete, plaster, or other materials being forced into the space between pipe and sleeve during construction.

G. Where oversized sleeves are used through fire rated floor or fire wall construction, Contractor shall seal sleeves with UL approved materials to maintain fire rating integrity.

H. In all areas where ducts are exposed and ducts are passing through floor, the hole shall be surrounded by a 4" high by 4" wide concrete curb.

I. Escutcheon plates shall be provided for all exposed pipes and all exposed conduit passing through walls, floors and ceilings. Plates shall be nickel plated, of the split ring type, of sizes to match the pipe or conduit. Where plates are provided for pipes passing through sleeves which extend above the floor surface, provide deep recessed plates to conceal the pipe sleeves.

3.6 DIELECTRIC CONNECTIONS

A. Dielectric connections shall be used at any points within the piping systems where dissimilar metals meet and shall conform to ASTMA-105 or ASTMA-182, Hart Industries O-ring unions or approved equal. Careful attention shall be given to the support brackets and hangers to select proper materials to avoid dissimilar metal contact at these points.

3.7 DRAINS AND VENT

A. In addition to the drains and vents indicated on the plans and piping details, the Contractor shall install additional drains and vents as required to remove all water and air from the piping systems.

3.8 VALVE DESIGNATION

A. Provide numbered brass metal tags on all valves and a numbered valve list mounted under glass on the wall described the valve operation. All control valves or special valves shall be described giving size,


model, manufacturer, and part number. 3.9 CUTTING AND PATCHING

A. The Contractor shall provide all cutting and patching necessary to install the work specified in this section. All cutting shall be done in a neat manner. Excessive cutting will not be allowed. The Contractor shall provide patching as required and shall restore the surface to its original condition.

B. No structural members shall be cut without the approval of the Engineer and all such cuttings shall be done in a manner directed by him.

C. Contractor shall arrange for proper openings in building to admit his equipment. If it becomes necessary to cut any portion of building to admit his equipment, portions cut must be restored to their former condition by this Contractor through agreeable arrangement with the general contractor.

D. Core drilling required for these trades is the responsibility of these contractors. Pipe opening through existing walls and floors shall be core drilled. Openings concealed above ceilings, in cases, etc. need not be core drilled. However, holes shall be cut in a neat manner and patched. Escutcheons shall be used in exposed areas.

3.10 VIBRATION ISOLATION

A. All equipment shall operate under all conditions of load without any sound or vibration which is objectionable in the opinion of the Engineer. In case of moving machinery, sound, or vibration noticeable outside of room in which it is installed, or annoyingly noticeable inside its own room will be considered objectionable. Sound or vibration conditions considered objectionable by the Engineer shall be corrected in an approved manner by the Contractor at his expense.

B. Rotating and reciprocating equipment shall be provided with suitable vibration isolation systems. Isolation for all equipment above the ground floor shall be designed for at least 95% absorption efficiency. Spring type isolators where indicated, shall be selected for 2" deflection with a minimum of 1" remaining compressible height after equipment is in place. Selection of isolators for proper loading to obtain desired efficiency shall be responsibility of manufacturer of isolating units to suit the equipment being supplied on the job, and shall be fully guaranteed by this supplier. Shop drawings of vibration isolation equipment, complete with thorough selection data, shall be submitted. Units shall be Consolidated Kinetics Corps., Metraflex, Kenex or approved equal.

C. Flexible duct connections shall be provided at inlet and outlet of all fans or cabinets containing fans and shall be constructed such as to allow a minimum movement of 2" in any direction and will not restrict normal movement of any equipment.

D. Flexible pipe connections shall be provided at the inlet and outlet of all base mounted pumps. 3.11 FOUNDATIONS, SUPPORTS, PIERS, ATTACHMENTS

A. Contractor shall furnish, and install all necessary foundations, supports, pads, bases and piers required for all air conditioning equipment, piping, pumps, tanks, compressors, and for all other equipment furnished under this contract, unless otherwise noted, and shall submit drawings to the Engineer for approval before purchase, fabrication or construction of same.

B. Construction of foundations, supports, pads, bases and piers where mounted on the floor, shall be of the same materials and same quality of finish as the adjacent and surrounding flooring material.

C. Equipment, unless otherwise shown, shall be securely attached to the building structure in an approved manner. Attachments shall be of a strong and durable nature and any attachments that are, in the opinion of the Engineer, not strong enough, shall be replaced as directed.

3.12 PROTECTION

A. Contractor shall protect all work and material from damage and shall be liable for all damage during construction.

B. Contractor shall be responsible for work and equipment until all construction is finally inspected, tested and accepted. He shall protect work against theft, injury or damage; and shall carefully store material and equipment received on site that are not immediately installed. He shall close open ends of work including pipe, duct or equipment with temporary covers or plugs during storage and construction to prevent entry of obstructing materials or dust and debris.

C. Contractor shall provide a protective covering of not less than 0.004" thick vinyl sheeting (or a similar


approved material) to be used in covering all items of equipment, immediately after the equipment has been set in place, (or if in a place of storage within the building under construction) to prevent the accumulation of dirt, sand, cement, plaster, paint or other foreign materials from collecting on the equipment and/or fouling working parts.

3.13 CLEANING

A. Clean from all new exposed insulation and metal surfaces grease, debris or other foreign materials. B. New Chrome plated fittings, fixtures, piping and trim shall be polished upon completion.

3.14 EQUIPMENT NAMEPLATES

A. Each piece of equipment shall be provided with an engraved black finish, phenolic nameplate indicating equipment name and number. Nameplate lettering shall be at least 1/4" high etched white letters and beveled white trim. Nameplates shall be attached using countersunk screws.

B. Pipe shall be labeled according to use, content and direction of flow, when pipe is insulated, the label shall be on the insulation jacket.

3.15 TESTS

A. Piping and ductwork shall be tested before covering is applied or work concealed, and all leaks corrected by removal of defective material and/or making up new joints. Equipment shall be protected from tests pressure by capping lines or with valves during test. Caulking of piping will not be permitted and where evidence of caulking is noted, the joints shall be removed from the piping system regardless of whether or not it is leaking.

B. Test on all pipe work shall be subject to the observation by Engineer. He shall be given 48 hours notice when a section of pipe is to be tested and the test shall not be removed, weather permitting, until permission is given by the Engineer.

3.16 SAFETY REQUIREMENTS

A. Systems and equipment shall be installed so as to be safe operating and all moving parts shall be covered where subject to human contact. All rough edges of equipment and materials shall be made smooth.

B. Safety controls shall be checked under the supervision of the Engineer's representative and eight (8) copies of test data showing settings and performance of safety controls shall be submitted to the Engineer. Pressure vessels shall be ASME stamped and shall have stamped relief valves. Water heaters shall be provided with ASME stamped T & P relief valve.

3.17 LUBRICATION

A. Bearings, except those specifically requiring oil lubrication, shall be pressure lubricated. Lubrication points shall be readily accessible, away from locations dangerous to workmen. Where lubrication points are not readily accessible, Contractor shall provide extended lubrication tubes to positions where lubrication can be easily accomplished. Pressure grease lubrication fittings shall be "Zerk-Hydraulic" type as made by the Stewart-Warner Corporation, or approved equal, for each type of grease required.

B. Contractor shall furnish lubrication charts or schedules for each piece of equipment or machinery. Charts on schedules shall designate each point of lubrication. Eight (8) copies of charts and schedules shall be submitted to the Engineer prior to final inspection and approved copies of each schedule and chart shall be framed by the Contractor in metal frames with glass front and installed in the equipment room.

3.18 GUARANTEE AND WARRANTY

A. Upon completion of work, Contractor shall demonstrate installation and make such tests as may be required to satisfy the Engineer and Owner that work is installed in accordance with drawings, specifications, and instructions. Contractor shall instruct Owner's personnel in operation, adjustment, and maintenance data as the basis of instruction.

B. Contractor shall guarantee the work done in accordance with drawings and specifications, and to be free of imperfect materials or defective workmanship. Anything unsatisfactory shall be corrected immediately and at Contractor's expense.


C. When the work has reached final completion, contractor shall submit written certification that Contract

Documents have been reviewed, work has been inspected, and that work is complete in accordance with Contract Documents and ready for final Engineer's construction observation visit. Contractor shall provide O&M Manuals prior to visit.

D. Contractor shall replace, (for the period of one year after acceptance by the Owner), without any expense to the Owner, any imperfect materials or defective workmanship.

E. Contractor shall provide duplicate, notarized copes of warranties and bonds. 3.19 PROJECT COMPLETION

A. When the Contractor considers that his work is complete in all respects, per drawings and specifications, he shall conduct an inspection of project with office and field supervision personnel which shall include reviewing all specified documentation, certificates, warranties and closeout information; and prepare a punch-list of all deficient or incomplete items of work.

B. When the Contractor considers above punch-list to be completed or corrected, he shall then provide in writing to the Engineer a copy of above punch-list, stating that he now considers his work complete and ready for a final inspection. Upon receipt of above written notice, the Engineer will schedule an inspection to determine if the Contractor's work is substantially complete and acceptable under contract documents.

C. The Contractor is advised to allow adequate time in his project schedule to complete all work, and above-referenced checkout by the scheduled completion date and before it is necessary for the Owner to occupy the facility.

D. Provide a 4 in. diameter PVC tube for plan storage in the Chiller Room. 3.20 PUNCHLISTS

A. Upon each inspection by the Engineer a punch list of deficiencies shall be generated by the Engineer and delivered to the Contractor. Contractor shall correct each deficiency in an expeditious and satisfactory manner and shall submit to the Engineer within two weeks an initialed punch-list indicating that each item has been corrected. Uncorrected items shall be explained and a time schedule given for its completion.

3.21 EXTENDED WARRANTY

A. Contractor, sub-contractor and manufacturers shall provide extended 18-month warranty on equipment installed during the project for the purpose of providing one full year of warranted operation after acceptance of the project by the Owner.

3.22 PAINTING, COLOR CODING, AND IDENTIFICATION

A. General 1) New Equipment and piping shall be painted and coded as herein specified. Colors shall be

selected by the Engineer. 2) The word "concealed" as used in this specification refers to work in furred spaces, pipe and duct

shafts, ceiling cavities, crawl spaces, and tunnels. The work "exposed" refers to work in all other areas.

B. Prime Coat: Prime and seal coat on all exposed surfaces, including galvanized surfaces, shall be provided by the Contractor who provides the equipment, pipe, duct, plenums, casings, insulation, etc. Field applied prime and seal coats shall conform to requirements of good practice and industry standards. Factory and shop applied prime and seal coats shall be compatible with finish coats. All prime coated surfaces shall be touched up where chipped, scratched, or otherwise damaged and shall be thoroughly cleaned and left ready for finish painting. 1) New Piping: All black steel piping and all welds, on both exposed and concealed and on insulated

and un-insulated piping, shall be painted with one coat of primer. All miscellaneous cast iron or cast steel items and black steel items exposed and concealed such as hangers and rods, brackets, machinery supports, etc., that are not shop primed, shall be field painted with one coat of primer. All surfaces shall be thoroughly cleaned of rust and dirt and shall be degreased before application of primer.


C. Finish Painting

1) Finish painting of new equipment, new piping, new ducts, new plenums, casings, new insulation, etc., located in mechanical equipment rooms shall be provided by the Contractor who provides the equipment, piping, ducts, insulation, etc

D. Piping and Equipment Identification 1) Identification shall be provided in all rooms and spaces by the Contractor who provides the piping

and/or equipment. 2) Identification of piping shall consist of a work description of the material transported in the line

together with color banding printed on "light fast" colored paper laminated between two sheets of vinylite or butyrate, formed to completely encircle the pipeline in sizes 5" and smaller. Sizes 6" and larger identification shall be strap-on construction. Marker shall be equivalent to "Set mark" pipe markers as manufactured by Seton Name Plate Corp. Identification shall be permanently installed by tightly overlapping edges and cementing in place. Markers shall be applied at every valve (except valves on fixtures, radiation and similar equipment), at every riser or "T" point, every exit or entry where pipe passes through walls, and every 50' on long lines. Arrows shall point away from identification bands and in direction of flow. Double headed arrows shall be used where flow is in both directions. Identification shall be applied so that printing can be read from any direction. In mechanical equipment rooms, piping shall be identified only at points of entrance and exit to room and at connections to equipment. Legends shall be standard size with letters ranging in height from 1/2" to 3-1/2" on piping 1" size and larger and with tags on piping 3/4" size and smaller. A schedule of color and legends conforming to ANSI A 13.1 shall be submitted for approval prior to application.

3) All equipment including fans, air handling units, motors, starters, controls, etc., shall be provided with identification tags identifying equipment as to system and item served. Tags shall be engraved rigid laminated phenolic attached with pins and adhesive.

4) All piping located at equipment, fans, air handling units, etc. shall be marked and identified. E. Labeling

The contractor shall provide permanent and legible labels and markings as follows: 1) Label all valves as to their service and function. Label direction of flow. Control valves shall be

labeled as to where they are controlled. 2) Pipes are to be labeled as to service and flow direction. 3) Label all thermostats as to function and component or equipment it controls (labeled to match

equipment). 4) Label all equipment and components.

5) Label direction of flow into and out of equipment. 6) Label all circuit breakers and disconnects with their respective unit numbers (as shown on plans)

with 3/8" “Dymo” Tape.


HEATING, VENTILATION & A/C 230500- 1

SECTION 230500 - HEATING, VENTILATION AND AIR CONDITIONING PART 1 - GENERAL 1.1 WORK INCLUDED

A. Work shall include furnishing all labor, materials, tools, equipment and appliances and performing all operations in connection with the installation of the heating, cooling and ventilation systems in the building. Contractor shall provide complete and operating systems according to the true intent and meaning of the plans and specifications. All pipe work, ductwork, control, equipment, etc., shall be provided as indicated or implied for a complete system.

Note - All VFDs for AHU, pumps, etc shall be by the same manufacturer. B. ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET

FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED.

C. Contractor shall include cost of all labor, accessories, tools, equipment and material required to completely execute installation of the entire mechanical system as shown on the drawings and as specified.

D. Work under this contract shall include, but is not limited to, the furnishing, unloading, handling, distribution, setting and installation of all components, trenching and backfilling refilling required for the following 1) Cooling systems 2) Existing Air handling systems 3) Piping systems 4) Temperature control system

1.2 SUBMITTALS

A. Shop drawings shall be submitted for the following items: 1) Chillers 2) Pumps 3) VFDs 4) Electric Motors 5) Valves and pipe specialties 6) Insulation 7) Piping Systems and accessories 8) Vibration isolator systems 9) Mechanical Room piping systems, 1/4” = 1’-0” drawings 10) Temperature Control System 11) Test and Balance


A. Qualification of Installers 1) For the fabrication, installation and testing of work under this section, Contractor shall use only

thoroughly trained and experienced workmen completely familiar with the items required and the manufacturer's current recommended methods of installation.

2) In acceptance or rejection of installed work, the Engineer will make no allowance for lack of skill on the part of workmen.

B. Codes and Standards 1) NC State Building Code. 2) NC State Building Code - Mechanical. 3) NC State Building Code – Energy


1.4 OBJECTIONABLE NOISES AND VIBRATIONS

A. All equipment shall operate without objectionable noises or vibrations as determined by the Engineer. If such objectionable noises or vibrations should be produced and transmitted to the occupied portions of the building by apparatus, piping, ducts, or other parts of the system, the Contractor shall make the necessary changes and/or additions, as approved by the Engineer, without extra cost to the Owner, to eliminate the noises or vibrations.

PART 2 - PRODUCTS

A. Refer to Individual Sections. All VFDs for the project shall be by the same manufacturer. PART 3 - EXECUTION 3.1 PLACING IN SERVICE

A. Contractor shall make all necessary tests, trial operation, etc., as may be required or as directed by the Engineer to prove that all work under these plans and specifications is in complete serviceable condition and will function as intended. All costs of the tests shall be borne by this Contractor.

B. Contractor shall furnish the service of all factory representatives, service engineers, or others required to place all the facilities in proper condition and operation, and shall bear the cost of such assistance.

C. Contractor shall also furnish and pay for all necessary assistance, as directed by the Engineer, which may be required to properly instruct the Owner's representative in the operation of all equipment.

D. Upon completion of all work, the system shall be tested to determine if any excess noise or vibration is apparent during operation of the system. If any such vibrations are detected in the system or noisy equipment found, the Contractor shall be responsible for correcting same.

E. Operating Instructions and Maintenance Manual 1) General Requirements. Three sets bound in plain, blue cloth, 3-ring hard back binder with label

holder. One of the three sets will include only Sections I, II and III. The remaining two sets will be complete, including Sections I, II, III and IV as described below.

2) Section I (Generally One Page) a. Name of job b. Address c. Owner's name d. Mechanical contractor's name and address e. Control contractor’s name and address f. Warranty dates:

One year - beginning: __ __ __ ending: __ __ __ Five year - beginning: __ __ __ ending: __ __ __

1) Section II (Generally One Page) a) Short description of system b) Area No. Listed Area Served Filter # & Size

2) Section III (Number of Pages Required Will Vary) a) Major equipment list (include all equipment w/motors)

1. Name 2. Manufacturer 3. Serial number 4. Horsepower 5. Voltage

b) Control sequence description c) Routine maintenance instructions (step-by-step procedures) d) Operating instructions (step-by-step procedures) e) Start-up service and inspection report f) Breaker and panel number serving each unit


3) Section IV (Shop Drawings, Etc.)

a) Operating & maintenance instructions by manufacturer b) Shop drawings c) Wiring diagrams d) Control drawings

3.2 GUARANTEE

A. The Contractor shall guarantee the complete heating and ventilating system against defects due to faulty materials, workmanship, or failure due to negligence of the Contractor. This guarantee shall extend for a period of not less than 12 months from the date of final acceptance. The guarantee shall include a full twelve-month warranty by the manufacturer on all materials and equipment furnished on the job, except where longer periods are specifically called for. The Contractor shall be responsible for any maintenance required on the system or service calls during the guarantee period.

3.3 WARRANTY AND SERVICE

A. Upon completion of all work, the Contractor shall completely check out the system, seeing that all motor bearings are greased as required and all equipment and controls are properly functioning. He shall be responsible for any other maintenance required on the system or service call during the warranty period.

B. All mechanical equipment shall carry a full one-year warranty by the manufacturer with an extended four years on chillers, cooling towers, etc. as specified herein.

C. The warranty shall begin the date of start-up and acceptance. Start-up of the system shall be conducted by qualified personnel. Owner shall be appraised of start-up date. Warranty shall include all parts, components and systems provided by the Contractor regardless of manufacturer. Stated warranty shall include repair, service, labor, materials, transportation, and charges for the repair or service of the system.

D. Contractor shall demonstrate installation and make such tests as may be required to satisfy the Engineer and Owner that work is installed in accordance with drawings, specifications and instruction. Contractor shall instruct Owner's personnel with operation, adjustment, and maintenance data as the basis of instruction.


TESTING, ADJUSTING AND BALANCING 230593 - 1

SECTION 230593 - TESTING, ADJUSTING AND BALANCING PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Testing, adjusting and balancing of Chilled Water HVAC systems. 1.2 REPORTS

A. Provide reports and certificates required in each category of testing, adjusting and balancing, signed by both the technician performing the work and the Contractor as representing accurate, factual data, based on readings in the field.

B. Reports shall be in triplicate on 8-1/2” x 11" white bond paper. Submit format for recording data for approval prior to use.

1.3 QUALIFICATIONS

A. Testing Services are provided by the Owner’s T&B Contractor. The Mechanical Contractor will work with and cooperate with the owners independent Testing and Balancing firm to perform all mechanical system testing and balancing.

B. The Mechanical Contractor shall perform preliminary water side balancing in order to start up and place the mechanical systems in operation. The owners T&B contractor will fine tune the hydronic systems.

1.4 PROCEDURE

A. Adjust and balance the complete airside mechanical system in accordance with standards as listed in AABC National Standards for Total System Balance, 2002, 6th Edition or NEBB Procedural Standards for Testing, Adjusting & Balancing of Environmental Systems, 7th Edition, 2005.

B. Record all test data on a reproducible print made from the latest available revised set of mechanical plans and submit one copy upon completion of the balancing contract. In addition, provide record of balancing data in accordance with Standard referred to above.

C. At completion of the balancing work, instruct the Owner's personnel as to proper operation and maintenance of each piece of equipment.

D. At completion of the balancing work, the TAB Contractor shall mark valve balancing final positions on devices with permanent marker and also indicate in TAB report all balancing settings.

1.5 ACCEPTANCE TESTS

A. Upon completing the erection of all equipment and work specified herein and shown on approved shop drawings, and at the time designated by the Engineer, the Contractor shall start all apparatus, making necessary tests as directed and as specified herein and make adjustments of all parts of all equipment before acceptance of equipment by the Owner. The Contractor must demonstrate to the Owner, by performance, that all equipment operates as specified and meets the guarantee called for.

B. Tests shall include satisfactory evidence that all systems operate as called for on the drawings and that all pieces of equipment operate at specified ratings under specified operating conditions.

PART 2 - PRODUCTS 2.1 TEST EQUIPMENT

A. Provide all meters, instruments, equipment and materials necessary for performance of tests. All instruments shall have been calibrated recently and verification of calibration provided with submittal data.

B. Testing apparatus, not part of the permanent installation, shall remain the property of the Contractor. C. Provide gaskets, lubricants and other expendable materials required to be replaced during the execution of

the work. Fixed-pitched pulleys required for fan adjustments shall be provided on an exchange basis by the party responsible for the fan installation.

TESTING, ADJUSTING AND BALANCING 230593 - 2

PART 3 - EXECUTION 3.1 PIPING SYSTEMS

A. Water piping shall be tested to a minimum of 125 psi before insulation covering is applied or work concealed and all leaks corrected by removal of defective material and/or making up new joints. Equipment shall be protected from test pressure by capping lines or valves during test. Caulking will not be permitted and where evidence of caulking is noted, the joint shall be removed from the piping system regardless of whether or not it is leaking. 1) Test hydrostatically to a pressure of 75 psi in excess of the operating pressure. 2) Flush and clean piping until the water runs clean. 3) Repair leaks and retest. 4) Tests shall be repeated until the entire system is tight. 5) Final pressure test shall be maintained for at least 24 hours.

B. Drainage piping shall be tested by filling with water to a point 10' above the underground drains or to point of discharge to grade and let stand thus filled for 3 hours.

C. Tests on all pipe work shall be subject to the inspection of the Engineer. He shall be given 24-hours notice when a section of pipe is to be tested and the test shall not be removed until permission is given by the Engineer.

3.2 PUMPS

A. Adjust, align and service pumps and motors in accordance with manufacturer's recommendations. B. Furnish typewritten data tabulating

1) Quantity of water circulated by each pump in gpm. 2) Suction and discharge pressures across each pump in psi. 3) Voltage and ampere input of each motor (one reading for each phase leg on three phase motors.) 4) Percent efficiency of each pump. 5) Horizontal, vertical and angular misalignment of pump and drive after 2 hours operation and after

remaining idle overnight. 6) Furnish manufacturer's pump curve with calculated operating condition indicated thereon.

3.3 CHILLED WATER COILS

A. Furnish typewritten data tabulating 1. Water flow through coil in gpm. 2. Water entering and leaving temperature in degrees F. 3. Water pressure drop through coil in Ft. H2O. 4. Air entering and leaving temperature in degrees F. 5. Air pressure drop across coil in inches H2O.

3.4 UTILITIES

A. Owner will furnish all fuel and power required for test purposes. Contractor shall provide proper and necessary help required to operate system while tests are being conducted.


MECHANICAL INSULATION 230700 - 1

SECTION 230700 - MECHANICAL INSULATION PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Piping insulation, jackets and accessories. B. Equipment insulation and covering

1.2 SUBMITTALS A. Product Data: Provide product description, list of materials and thickness for each service or equipment

scheduled, locations, and manufacturer's installation instructions. 1.3 ENVIRONMENTAL REQUIREMENTS

A. Maintain ambient temperatures and conditions required by manufacturers of adhesives, mastics and insulation cements.

PART 2 - PRODUCTS 2.1 Piping Insulation:

Quality Assurance: Comply with the Midwest Insulation Contractors Association "National Commercial and Industrial Insulation Standards", (MICA).

A. Delivery, Preparation, storage and Handling: 1) Deliver materials to site in original factory packaging, labeled with manufacturer’s identification,

including product density and thickness. 2) Store insulation in original wrapping, and protect from weather and construction traffic. 3) All insulation and surfaces to be insulated shall be kept dry and free from all moisture prior to and

during the application of insulation and vapor barrier. It is critical to keep the entire insulation system free from moisture. All wet insulation and wet vapor barrier jacketing, tapes, joint sealers and mastics will be removed from the job site at the insulation contractor’s expense.

B. Examination: 1) Before applying insulation, verify that piping has been inspected, tested and approved. 2) Before applying insulation, verify that surfaces are clean (foreign material removed) and dry. 3) Before applying insulation, verify that brass thermos-wells with 2.5” lagging extensions have been

installed. 4) Before applying insulation, verify that 4” long brass nipples for gage cocks have been installed.

C. Insulation material: 1) Insulation material for chilled water piping shall be shall be insulated to a thickness recommended

by the manufacturer for the intended service. Insulation shall be Dyplast dP iso-25 Series 200 or equal. Closed cell insulation shall be rigid foam which is a modified polyisocyanurate (2 lb/cf density) cellular plastic with an aged "K" factor of not more than 0.18 Btu in/hr. ft² F at 75F mean temperature and not to exceed flame spread of 25/smoke density of 50 per UL 723, complete with vinyl film jacket with a maximum permeability rating of 0.05. Thickness on inside piping shall be minimum 1"on piping up to 1.5” in diameter. Piping 1.5” in diameter and larger shall be 1.5” thick. Thickness on outside piping shall be 2" minimum. Cellular glass insulation shall be Foamglas or approved equal.

2) Insulation shall have a minimum density of 1.25 lb/ft3, per ASTM C-303 or D-1622. 3) Insulation and vapor barrier shall meet a minimum 25:50 rating for flame spread and smoke

development per ASTM E-84 as tested and certified by Underwriters Laboratories, Intertek Group or Southwest Research Institute.

5) Compressive strength must maintain a minimum of 15 psi at 10% deflection per ASTM D-1621 perpendicular to rise.

6) Water vapor permeability shall not exceed 4.0 perms per inch per ASTM E-96. 7) Fitting insulation thickness shall be equal to the adjacent pipe insulation thickness.


8) Fiberglass insulation is acceptable for domestic hot and cold water. D. Joint Sealant:

1) A ¼” bead of non-hardening vapor retardant butyl rubber joint sealant shall be used to seal all longitudinal and circumferential joints on both indoor and outdoor applications.

2) Layers of insulation should not be bonded together. Excessive sealer in the joints should be avoided during application. Do not featheredge. It is important that all insulation sections be trimmed and tightly butted to eliminate voids, gaps or open joints. Joint sealer shall not be used to fill these imperfections. Insulation ends shall be rubbed against each other to achieve a tight fit prior to application of joint sealer.

3) Joint sealer shall be vapor barrier type, moisture and water resistant, 97% solids by weight, non-hardening, flexible with a service temperature range from -50ºF to 180ºF.

4) All joint sealers shall be compatible with supplied insulation and be absolutely free of solvents or any chemicals that will attack insulation. Acceptable sealant manufacturers shall include but not be limited to Childers and Fosters. Product names include CP-70 from Childers.

E. Interior Vapor Barrier Mastics and Jacketing: 1) A barrier mastic shall be used to seal all fittings, valves, heads, and equipment insulation. 2) A factory applied vapor barrier mastic of monolithic elastomeric coating having a water vapor

permeance of .02 perms at 40 mils dry film thickness and a service temperature of -40ºF to 180ºF is acceptable.

3) Field applied vapor barrier mastic must be water based, flexible and compatible with the insulation, having a water vapor permeance of .03 perms at 30 mils dry film thickness and a service temperature of -20ºF to 190ºF.

4) Vapor barrier mastic material shall be Vimasco’s #749 Vapor Blok as manufactured by Vimasco or approved equal.

5) Modacrylic fiber reinforcing cloth shall be imbedded in field applied vapor barrier mastic to achieve maximum strength and elongation in all areas where vibration and mechanical abuse is present. This reinforcing cloth must have 8 x 8 openings per square inch, be a leno-weave design, manufactured from modacrylic fibers with polyvinyl acetate finish, weighs 2.65 oz/yd2, and have an elongation of 35% at 0ºF.

6) Reinforcing cloth shall be Vimasco Elastafab #894 as manufactured by Vimasco or approved equal. F. Vapor Barrier Jacketing Tape:

1) Vapor barrier shall be used to seal the piping system and provide a permanent vapor barrier, reducing water vapor permeance to .02 perms per ASTM E-96. All longitudinal laps shall be sealed with 1 1/2” minimum width pressure sensitive SSL (self sealing lap) tape and all circumferential laps shall be sealed with 2” width vapor barrier tape. Firm pressure shall be applied on sealed tape joints. The SSL tapes can be: Venture SSL 1124, Venture SSL 3693 FLE, Venture SSL 1163, or Venture SSL 514CW.

2) Vapor Barrier material must have a flame spread of 25 and smoke development of 50 per ASTM E-84.

3) A pressure sensitive tape manufactured from the same material shall be used to seal all butt joints and wall penetrations.

4) No screws or staples shall be used to adhere vapor barrier to pipe insulation. G. Installation and Warranty:

1) Refer to Manufacturer’s Installation Specification for complete installation procedure. PART 3 - EXECUTION 3.1 PIPE INSULATION APPLICATION

A. Pipe insulation shall be applied over clean, dry and tested pipe in a manner which will give a continuous vapor barrier. Concealed insulation shall have a self-adhering lap and butt strips. Lap and butt strips for exposed insulation shall be adhered with adhesive meeting Johns Manville life safety standards.

B. Insulation shall be protected by sheet metal half-sleeve at hangers, guides, anchors, etc.


C. Insulation in the boiler room and other exposed areas not accessible to students shall have a waterproof protective jacket.

D. Insulation exposed in areas accessible to students shall have protective metal jacket. E. All pipes shall be thoroughly cleaned of all trash and rust and painted with two coats of corrosion

inhibiting enamel prior to installation of pipe covering. F. All exposed insulation shall have an 8 oz. finishing canvas applied over 35# rosin sized paper.

Size all exposed canvas with Foster 30-36 at 50 sq. ft. per gallon minimum. Insulation exposed in the building shall be painted a color to match existing wall finishes. Insulation inside boiler rooms and mechanical equipment rooms shall have 8 oz. finishing canvas and shall be sized with Foster 30-36 at 80 sq. ft. per gallon and then coated with one coat of Foster Lagtone, color coded as directed on job, applied at 40 sq.ft. per gallon per coat.

G. Insulation and jacket shall pass continuously through wall sleeves and be properly firestopped as per UL standards. All wall penetrations shall be provided with pipe sleeves.

H. All exterior piping shall have an aluminum jacket installed over the insulation as an additional protection from the elements.

I. Provide electric heat tap on exterior piping subject to freeze prior to applying insulation in accordance with manufacturers recommendations. Coordinate with electrical contractor for power source.


CONTROLS AND INSTRUMENTATION 230900 - 1

SECTION 230900 - CONTROLS AND INSTRUMENTATION PART 1 – GENERAL 1.1 WORK INCLUDED A. The existing building automation / DDC controls system at this location is a Carrier Comfort

Network (CCN) system integrated into the City of Charlotte i-Vu server. There is no existing open protocol integration at this location.

B. The City of Charlotte has standardized energy management, DDC, and Automation systems to three specific manufacturers. Included within this bid package is the City of Charlotte Building automaton and controls standard. The Standard can be viewed in the Appendix at the end of this SECTION.

1. Within the standardization of automation systems, the following are the approved automation and DDC system factory authorized installers.

a. (Automated Logic) Automated Logic Contracting Services Contact: Jeff Smidler Email: [email protected] Phone: (804)864-9488

b. (Carrier) Carolina Building Controls. Contact: William Blackburn Email: [email protected] Phone: (980)425-7759

c. (Schneider Controls) Schneider Electric. Contact: Joe Shelly Email: [email protected] Phone: (704)571-6045

C. Chiller CH-1 (Base Bid) is being installed as a permanent replacement of a temporary rental chiller. The original design of this site utilized a central chiller located at the maintenance building across the parking lot. Chiller CH-1 will isolate the Administrative Office Building from the central campus chilled water plant.

D. Chiller CH-2 (Alternate # 1) is replacing the existing main chiller. The existing chiller is connected directly to the Carrier Comfort Network (CCN). CH-2 shall communicate directly with the existing Carrier Comfort Network (CCN) without the use of an interface or translator device. The existing chiller plant controllers shall be reused with the installation of the new CH-2 chiller. The chiller plant controller programming shall be updated to remove any functionality that relates to the Administrative office building. D. Instructions for Owners.

1.2 SUBMITTALS

A. Submit shop drawings and product data to Engineer and Owner. B. Provide complete operating data, system drawings, wiring diagrams, and written detailed operational

description of sequences, and description and engineering data on each control system component. Include sizing as requested.

C. At completion of work, submit report on check-out of automatic control system D. Provide control diagrams for each system. Provide electronic copies to the Owner. E. Submit manufacturer's installation instructions. F. Submit a sequence of operation and schematic drawings of the entire automatic temperature control

system to the engineer for approval before starting work. Cut sheets describing each item of significant control equipment or components shall be included. Upon completion of work, the automatic temperature control supplier shall provide three (3) final sets of the sequence of operation and schematic drawings of the control system to the mechanical contractor for distribution. A photocopy of the final approved control drawings shall be framed under glass and posted in the main equipment room.

PART 2 – PRODUCTS 2.1 GENERAL:

mailto:[email protected]




A. Furnish all labor, material, equipment and service necessary for the proper installation of a complete system of DDC controls as manufactured by Carrier CCN or its vendors. The control equipment shall be installed, tested and adjusted by regular employees of the control manufacturer.

B. The control manufacturer shall guarantee the control system modification to be free from defects in workmanship and material under normal use and provide service for a period of one year after acceptance by the Engineer or beneficial occupancy of the building. Any defects in workmanship or material during this time shall be corrected by the control manufacturer at no charge to the Owner.

C. ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED.

2.2 CONTROL SYSTEM COMPONENTS:

A. Provide a controller with the following capabilities: 1. Can directly communicate with the existing Carrier Comfort Network (CCN) controls system. 2. Devices that require a translator or interface for communications with the existing control system are not permitted. 3. Has the point capacity to meet or exceed the required Input / Output I/O requirements of the project.

B. Controls Enclosures shall be a minimum of 18 Gauge steel construction, with full hinged door. Provide coin-latch option for accessing the panel. Insert sub panels shall be perforated metal poly-metal sub panels are not approved. The preferred controls enclosures are Functional Devices MHXX series.

C. Power supplies for new controls shall meet the following requirements: Totally enclosed transformer power supply, with on/off switch and circuit breaker. Secondary wire connections shall be internal, exposed terminal strips are not permitted. Power supply Va rating must exceed the load Requirements by a minimum of 50%. The power supply shall be capable of powering the controller for future expansion and utilization of all expandable I/O modules. The Preferred power supply: PSH100AWB10 or similar based on Va requirements.

D. Relays shall be equipped with Hand / Off / Auto rocker switch (HOA) and multi voltage coil 10-30 Vac/Vdc 120 Vac. The relay shall also be equipped with a status indicator LED. The Preferred Relay Functional devices RIBU1S

E. Differential Pressure Transmitters shall be selected based upon project requirements The Preferred transmitter Veris Industries PWRLX03S006A

2.3 COMMUNICATIONS WIRING The Carrier Comfort Network (CCN) communications buss shall be a continuation of the existing system. The new segment of the communications shall start at the end point of the existing communications segment.

A. The new communications segment shall be installed in a Daisy Chain configuration. The use of T- Taps and splicing is not permitted. B. Communications segments that leave the interior of the building for connection to devices outside of the building shall utilize an optically isolated repeater and surge protection device. The repeater shall be installed on the communications line prior to exiting the building. The surge protection device shall be installed in the CH-1 controls cabinet. C. Communications cable shall be 18-gauge, 3 conductors, stranded, shielded cable contained in a white plenum rated jacket. The following colors for the conductors shall be used: Red, White, and Black. Installation and termination of this cable shall be matched to the configuration used in the existing system.

1. Isolated Repeater Carrier Part # REP485 2. Surge Protector Carrier Part # PROT485

D. Provide a new BACnet communications cable from the Variable Speed Drives (VSDs) to the new control’s enclosure. Coil approximately twenty feet of cable at the enclosure end for future use.


2.4 INPUT & OUTPUT I/O WIRING:

A. All I/O wiring shall be 18-gauge or greater stranded cable with plenum rated jacket. Wire smaller than 18- gauge is not permitted B. Analog Input wiring shall be independent of other input or output wires. This includes (temperature sensors, transducers, and other 0-10V, 0-5V, or 4-20mA signals) Bundling of input wires in a multiple conductor cable is not permitted. C. Analog output wiring shall be independent of other input or output wires. Bundling analog output wires in a multiple conductor cable is not permitted. D. Binary input wiring that contains dry contact wiring only is permitted to be bundled if no fewer than two spare conductors are provided in the bundle. Binary input wiring shall not be bundled with conductors carrying a voltage greater than 5-VDC. E. Binary output wiring shall not be bundled.

Definition “bundling”: Utilization of multiple conductor jacketed cable for more than one input or output signal per jacketed cable.

PART 3 – EXECUTION 3.1 COORDINATION WITH TAB

A. The TAB Agency shall be provided with either appropriate control system software or the Control Contractor's handheld device for setting up HVAC equipment, and placing said equipment in the correct mode for testing. This software and / or equipment shall be provided to the TAB Agency free of charge for the duration of the project, and shall be returnable to the Controls Contractor upon completion of the project. The Controls Contractor shall work in close cooperation with the TAB agency pipe mounted differential pressure sensor / transmitters and temperature sensors.

3.2 SEQUENCE OF OPERATION (Base Bid)

A. Chiller CH-1 Start / Stop command shall be by control relay. Start / Stop command over communications is not permitted. B. Outside air lockout functionality shall be incorporated with the Chiller. Set the initial lockout setpoint at (50˚F) adj C. Start / Stop command of Variable Speed Drives (VSDs) shall be by relay. Start / Stop command over communications is not permitted. D. Variable Speed Drive (VSD) Output reference speed shall be by direct wired control signal. Output reference speed over communications is not permitted. E. Lead Lag Operations shall be based on runtime hours accumulated. The initial setting will be 160 hours adjustable. Upon failure of the Lead device the Lag device shall start and maintain control.

3.3 SEQUENCE OF OPERATION (Alternate # 1) A. The existing Sequence of Operation for the Maintenance Building System and Chiller CH-2 is to remain as was with the original chiller. Program the replacement Chiller to act the same as the old Chiller. B. Remove any program actions for Chiller CH-2 associated with the Office Building and the existing AHUs located there-in.


3.4 INTEGRATION OF CONTROLS

a. A. Provide full integration of all new controls, chiller, and associated hardware into the City of Charlotte i-Vu server. Integration includes the following items:

1. All chiller values. Including setpoints, schedules, alarms, and diagnostic values. 2. All controller values. Including setpoints, schedules, alarms, limits and diagnostic values. 3. Update existing building graphics to incorporate the new equipment and controls. Replicate the existing graphics configuration when adding the new devices.

3.5 INSTALLATION A. All electric wiring in connection with the automatic temperature control system shall be furnished and

installed by the temperature control contractor. Maximum wiring in conduits shall not exceed 50% of the conduit capacity. Communication cable and power wiring shall be in separate conduits. Butt splices in communication cable are NOT allowed.

A. Automatic temperature control valves and separable wells for immersion elements furnished by the control manufacturer shall be installed by the mechanical contractor under the control manufacturer's supervision.

B. Provide sufficient access to all terminal box controllers, to ensure that TAB agency can adjust controller to specified minimum and maximum airflows.

C. Provide control system technicians to assist during system verification and functional performance testing.

D. The weather shielded enclosure for outdoor air ambient dry bulb temperature and relative humidity should be located on the north side of a rooftop structure, preferably near an outside air intake louver. The data measured by the sensors included in this enclosure shall be displayed on all BAS HVAC equipment graphics screens.

E. Owner training on control sequences of operation shall not begin until the completion of the functional operation of the System is verified by the MC and the Engineer.

F. Provide 1-year warranty for all controls material, equipment and installation 3.6 APPENDIX A. City of Charlotte Building Automaton and Controls Standard is as follows:

PURPOSE This standard is intended to define and standardize Building Automation Systems (BAS) used across the City. The list of BAS solutions provided in this standard will assist in defining high level requirements for BAS installation and maintenance within City maintained buildings.

Subject/Title

Building Automation Systems (BAS) Standard

Date Effective Revision Date Effective November 14, 2019 January 27, 2021


This standard is not intended to consolidate all BAS into a single BAS solution for the City or remove any existing BAS from production use. Standardization of BAS creates wide-ranging benefits that will streamline and simplify every process from initial planning to daily operation. This will ensure interoperability and assists the City with managing the following: Capital Expenses

• Total cost of BAS equipment • Cost associated with the implementation of that equipment

Operating Expenses • Planning and Administration • Maintenance • Education and Certification • Configuration and Asset Management • Monitoring and Management • Incident and Problem Resolution • Licensing

Operational Risk • Availability • Reliability • Usability • Manageability • Problem Resolution • Total Cost of Ownership

BACKGROUND There are currently 3 different vendors for BAS systems supported by the City of Charlotte’s Building Services. Each system requires specialized knowledge of control system configuration via vendor specific software. As each separate system requires a series of certifications to acquire the knowledge to manage and maintain the systems, too much variety in the type of equipment deployed creates operational and financial challenges. It also makes it difficult to streamline BAS deployments and procurement. Enterprise-wide standards will assure the best and most effective use of existing knowledge. It will also assist in developing strategies for long-term growth and continually phasing in newer technology as it becomes most cost effective. DEFINITIONS Term Definition Heating, Ventilation, and Air Conditioning (HVAC)

An abbreviation for the heating, ventilation, and air-conditioning system; the system or systems that condition air in a building.


Control System

HVAC equipment needs a control system to regulate the operation of a heating and/or air conditioning system. Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken.

Building Automation System

Building automation is the automatic centralized control of a building's heating, ventilation and air conditioning, lighting and other systems through a building management system or building automation system (BAS). The objectives of building automation are improved occupant comfort, efficient operation of building systems, reduction in energy consumption and operating costs, and improved life cycle of utilities.

STANDARD City facilities that have a BAS maintained by the City will use systems built by Carrier, Automated Logic, or Schneider. Appendix A – Approved BAS Systems List provides a detailed list of hardware, software, certifications, and programming languages to support this standard. Appendix B – Approved BAS Parts List provides a detailed list of manufactures, part numbers, model numbers, and descriptions of parts used to build and maintain BAS systems included in this standard. The Building Services Team will create and maintain approved systems lists and parts lists for this standard. Exceptions to this standard will be reviewed and approved by the City of Charlotte Building Services Team. Approved Lines

• Carrier • Automated Logic (ALC) • Schneider Electric •

The specific BAS Control Systems on the Approved BAS Control Systems spreadsheet will be determined by the Building Services team. Approved exceptions entries will document the line, what it’s approved for, for what purpose, and the agreed upon method of support. An example of when an approved exception may be needed is for BAS equipment not utilized by the systems listed above and not maintained by the City’s Building Services team. There must be an agreed-upon business reason to add an exception to the list EXCEPTIONS BAS Control Systems that have been captured on an approved exceptions list. Aviation will continue to use Johnson Controls with the understanding that this equipment is self-maintained by Aviation. On January 26, 2021 The Building Services Team decided to not renew the contract with Controls Service Group (AKA, ABC Controls) The Area Reliable Controls Dealer. Reliable Controls has been removed from the standard. The team has decided to add Automated Logic Corporation (ALC) as the replacement BAS vendor. The selection of ALC is based upon the fact that the software and hardware is virtually identical to those of Carrier. There is a minimal learning curve for the Building Services Team to implement and support the ALC product offering. END OF APPENDIX END OF SECTION 230900

https://cityspaces/citywide/tmat/Documents/Standards%20and%20Guidelines/Approved%20Standards/STD-HRDWR-09%20-%20Approved%20Systems.xlsx

https://cityspaces/citywide/tmat/Documents/Standards%20and%20Guidelines/Approved%20Standards/STD-HRDWR-09%20-%20Approved%20Parts.xlsx

BASIC PIPING MATERIALS AND METHODS 232100 - 1

SECTION 232100 - BASIC PIPING MATERIALS AND METHODS PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Piping B. Piping Specialties C. Valves D. Pipe Hangers & Supports E. Expansion Compensators F. Vibration Isolation G. Pumps H. Chillers I. Buffer Tanks

1.2 RELATED WORK

A. Section 230700 Mechanical Insulation B. Section 230500 Heating, Ventilation, Air Conditioning C. Section 238239 Heat Transfer Equipment

1.3 SUBMITTALS

A. Submit detailed shop drawings under provisions of Section 230000. Clearly indicate make, model, location, type, size and pressure rating.

1.4 MANUFACTURE

A. All pipe shall be made in the United States and bear appropriate markings. B. ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL

MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED.

PART 2 - PRODUCTS 2.1 PIPING

A. Chilled Water Supply and Return 1) Schedule 40 steel pipe, ASTM A-120/A-53. Install in accordance with manufacturer's

recommendations. Piping 1-1/2" and smaller shall have threaded connections; 2" and larger shall be welded or flanged. Pipe and fittings shall be made in United States and shall bear the stamp of an American Foundry. Fittings shall be standard weight cast iron, malleable screwed fittings, or standard steel flange.

2) Dielectric unions or couplings shall be installed where two dissimilar materials are joined together and shall conform to ASTMA-105 or ASTMA-182, Hart Industries O-ring unions or approved equal.

B. Drain Piping: 1) Above floor condensate drain lines shall be copper and insulated unless otherwise noted.

Drains located in ceiling air plenums shall be copper and insulated. Drains shall be run in neat manner, parallel and perpendicular to walls, to floor drain or French drain and turned down into drain, unless otherwise indicated. Minimum size of 1" unless otherwise shown. Drains through rated assembly shall be protected as per UL standards and code requirements.

C. Domestic Water: 1) Above ground domestic water piping shall be ASTM B-88 Type "L" hard copper and

wrought copper sweat fittings, using silver solder. D. All exterior piping subject to freezing shall be protected with aluminum jacket, insulation and heat


tape. 2.2 PIPING SPECIALTIES

A. Strainers 1) Strainers in piping shall be Y-pattern, set in a horizontal (or vertical downward) run of the

pipe. Where this is not feasible, strainers may be of enlarged-cross-section type. Strainers shall be arranged so as not to "trap" lines and to facilitate disconnection and opening up for cleaning. Strainers shall be line size (unless otherwise indicated).

2) Strainers shall have removable cylindrical or conical screens of monel or stainless steel and suitable flanges or tapings to connect with the piping they serve. Design shall allow blowing out of strainer screen without disconnection of the main piping.

3) Screens shall be monel with perforations as follows: 2" and smaller .045" 2-1/2" - 5" .057" with 30 mesh screen 6" and larger 5/32" with 30 mesh screen

4) Strainers shall be provided with blow-off valved outlet. 5) Manufacturers – Taco, B & G, Sarco, Mueller or approved equal.

B. Pressure gauges shall be designed for the service in which they are installed. Gauge dial size shall be 4-1/2" diameter unless otherwise shown on the plans. For pump service or pulsating service, provide snubber and shut-off cock. Each gauge scale shall be twice the normal pressure of line in which it is installed. Each gauge shall have phosphor bronze bourdon tube, stainless steel or brass case and stainless steel movements. Accuracy shall not be less than 1-1/2% of scale range. Water service gauges shall read in feet of water; steam gauges in PSI. Provide recalibration screw for gauge recalibration.

C. Thermometers: 1) Thermometers shall be constructed of die cast aluminum or bronze with plastic fronts and

red liquid filled columns. Scale lengths shall be not less than 7" with not more than 2-degree graduations. Thermometers shall be furnished in whatever stem form is required for easy reading from the floor. Thermometers for installation in pipes shall be provided with separable sockets. Extension necks shall be provided for all thermometers that must be mounted through insulation.

2) Dial thermometers shall be installed where noted and may be used in lieu of thermometers specified above at Contractor's option. Dial thermometers shall have cast brass or stainless steel cases, 4-1/2” diameter, with scales graduated not more than 2 degrees per graduation. Stem forms shall be provided as required for easy reading from the floor.

3) All thermometers shall be of the same manufacturer and shall be installed where indicated on the drawings.

D. Unions and Flanges: 1) Unions up to and including size 2" shall be malleable, black or galvanized as required,

ground joint, brass or bronze seat, box type unions, for 150# working steam pressure. 2) Unions 2-1/2" and larger shall be American-Standard cast iron flange unions with 1/16"

thick granite, or equal, gaskets. Full-face gaskets will not be approved. 3) Unions, flange unions and companion flanges shall have full size standard threads, free

from imperfection and shall be faced up squarely upon pipe cut to proper length so that the union joint may be drawn tightly together without strain or undue stress upon the pipe.

E. Pipe Fittings: 1) Fittings for black steel shall be standard weight cast iron or malleable screwed fittings

except flanged fittings may be used where required. 2) Welding fittings may be used on black steel pipe 2-1/2" and larger at Contractor's option.

Long turn welding fittings shall be used with threaded welding outlets or "Weld-o-lets" for lateral connections where branch is at least two (2) sizes smaller than main. Saddling of one pipe into another will not be permitted.

2.03 VALVES A. Valves shall be as specified below. Manufacturers and figure numbers are listed to give valve type

and quality. Valves shall be as specified or approved equal. All valves shall be best quality and of


demonstrated reliability. Jenkins, Crane, Powell, Hammond, Nibco, or equal. Valves shall be full line size. VALVE SCHEDULE: VALVE SIZE DESCRIPTION MANUFACTURER &

MODEL Globe 2" & below Screwed, bronze body Jenkins 106A, Crane 7,

Powell 150, Hammond 1B413 2" & below Solder, bronze body Jenkins 1200, Crane 1310,

Powell 241, Hammond 1B423 2-1/2" & above Flanged, iron body, Jenkins 613, Crane 351,

O.S. & Y Powell 241, Hammond 1R116 Globe 2" Screwed, bronze body Jenkins 47U, Crane 428UB,

Powell 2700S, Hammond 1B617 2" & below Solder, bronze body Jenkins 1242, Crane 1324,

Powell 1821, Hammond 1B635 2-1/2" & above Flanged, iron body, Jenkins 651A, Crane 465-1/2,

O.S. & Y Powell 1444, Hammond 1R11440 Check 2" Screwed, bronze body Jenkins 92A, Crane 37,

Powell 578, Hammond 1B940 2" & below Solder, bronze body Jenkins 1222, Crane465-1/2,

Powell 1825, Hammond 1B945 Ball 2" & below Bronze body, Jenkins 30-A, Powell 4210B,

Buna-N seats NIBCO T-590 B. Butterfly valves shall be dead end service, and suitable for water service. Valves shall have

EPDM seats suitable for temperatures up to 275oF and pressures up to 150 psig. Body shall be cast iron, disc shall be aluminum bronze, and shafts shall be stainless steel. Valves shall have 10-position lock handles up through 6" and worm gear operator above 6". Bodies shall be lug type. All working parts shall be field replaceable. Valves shall be equipped with extended neck for insulation up to 2" thick.

C. Hose end valves shall be screwed connection, bronze bodied as specified above. Hose connection shall be suitable for 1/2" hose.

D. Safety relief valves for pressure reducing or regulating valve assemblies shall be ASME and National Board Certified and rated to discharge the stated capacity of the reducing valve served at a pressure of not more than ten (10) lbs above the set pressure of the reducing valve.

E. Ball valves for water service shall be 400 psi WOG cold, non-shock type, with bronze body and ball, Teflon seats, full port, three-piece construction, similar to Hammond BV 811-T or BV 812-T, Jenkins #32-A or approved equal. Provide extension neck where installed in insulated piping. Disc for valves shall be suitable for service intended.

F. Balancing fittings 3" and smaller shall be rated at 250 degrees F at 125 psi and shall be similar to B & G "Circuit Setter", complete with setting indicator and insulation package, as specified under 2.0.2.B of this Section. Secure with re-usable, removable aluminum bands and vapor barrier tape in a manner to prevent condensation formation.

G. Balancing valve 4" and larger shall be eccentric plug valves with packing and plug facing (high temp) suitable for water service from 40 degrees F to 230 degrees F continuous duty and having tight shutoff. Bodies shall be semi-steel. Valves shall be removable lever type. Valves 6" and larger shall be gear operated.

H. Multi-purpose valves shall be combination shut-off, balancing, metering, and check valve assembly. Valve shall be constructed with cast iron body and plug, bronze gland, brass clapper and seat, and stainless steel sleeve.

2.4 PIPE HANGERS AND SUPPORTS

A. Suspended piping shall be supported by means of wrought iron hanger rings or adjustable clevis hangers and iron hanger rods. Provide ceiling plates for each exposed hanger rod.

B. Pipe hangers for drain piping shall be of the adjustable clevis type. All hangers shall be supplied


with the necessary rods, turnbuckles, nuts, locknuts, and flexible means of attachment to the supporting structure. Hanger shall be sized to include insulation.

C. Copper piping, where exposed in finished areas, shall be hung by means of split type copper plated malleable iron hanger rings, sized to fit pipe.

D. Steel piping, except as otherwise noted, shall be hung by means of clevis type hangers, sized to fit outside the insulation

E. Pipe may be supported from steel trapeze or wall brackets where indicated. Provide pipe shields at hanger.

2.5 EXPANSION COMPENSATORS

A. A complete system of expansion compensators, guides and anchors shall be furnished and installed per manufacturer’s recommendations and/or shown on the plans for control of hot and chilled water piping expansion. Metra-flex, Mason, Keflex or equal.

2.6 FIRE SAFING

A. All pipe penetration shall be firestopped using U.L. Classified through-penetration firestop devices as manufactured by Hilti, 3M, ProSet Systems, Inc. or equal. The fire rating of the firestop device shall be equivalent to or greater than the fire rating of the floor or wall penetrated. All firestop devices shall be installed in accordance with manufacturer's instructions. In lieu of firestop devices, penetrations may be firestopped in accordance with standard U.L. through-penetration firestop systems for type construction and fire rating required as detailed on drawings.

PART 3 - EXECUTION 3.1 PIPING

A. Piping shall be installed as to not cause any strain on joints and connections. B. Piping shall be pitched for air control. Provide petcock and drain. C. Piping shall be supported from the roof structure or wall bracket. Coordinate in field. D. Piping passing through fire/smoke walls shall have the wall opening protected in a code-approved

manner with through penetration firestop devices by ProSet Systems, Inc. or approved equal. E. Provide all piping and connections to all items of equipment as shown and/or as required to fully

complete the system indicated including drains and other connections. The drawings show the arrangement desired and the Contractor shall follow the drawings as accurately as possible. If conflict should arise, the Contractor shall notify the Engineer before making any major changes. The Contractor shall verify all measurements on the job and cut pipe accurately for fabrication avoiding all springing or misalignment of piping unless specifically noted for expansion loops. All piping shall be reamed or filed and cleaned to remove burrs and other obstructions. All broken or defective fittings shall be removed immediately from the job site.

F. Pipe shall be run as shown and of sizes designated upon the plans. G. Chilled water piping located outside the building or in areas subject to freezing shall have piping

and drain valves installed in a manner to completely drain and "winterize" system. H. Insulated piping shall be provided with insulation protection sheet metal saddles, No. 22 gauge

galvanized iron. Saddles shall be of length equal to two times the outside diameter of the insulation and shall extend to above centerline of the pipe. At time hanger is installed install 24" long section of insulation with hanger saddle.

I. Threaded joints shall be made up tight and to a depth of standard effective thread as given by the National Association of Pipe Manufacturers. Graphite and oil or non-hardening pipe joint compound may be used on male thread end of pipe only, providing it is free from lump substances or grit.

J. Valves shall be installed at all points noted on the drawings by valve symbols or as required by best general practice for proper control and operation of the system.

K. Condensate drain piping shall run to termination points as indicated on plans. Drain lines shall slope a minimum of l/4" per foot.


L. All drain lines have not been shown on the drawings and these shall be run as required. Drains from low points in piping, and drains from pump bases shall all be installed with valves as required and run to the nearest floor drain. Relief valve discharge shall be piped to drain.

M. In Boiler and Mechanical Rooms, all pumps, pressure relief valves, backflow preventers, etc. shall

be piped and arranged so as not to be located over a boiler, chiller, AHU, water heater, etc. N. Prior to connecting piping to ANY device (pumps, chillers, fan coils, unit ventilators, unit heaters,

etc.), piping shall be thoroughly flushed several times as required to remove all dirt, debris, pipe slag, etc. Mains and laterals are to be flushed. It is strongly recommended that this flushing be accomplished as each section of piping is installed. It shall not be accomplished at one time for the entire system. When approved by the Engineer, small systems may be flushed all at one time.

3.2 PIPE SLEEVES

A. Pipes installed under this contractor that are passing through walls, partitions, and floors of building shall be provided with pipe sleeves consisting of a standard steel pipe having a length equivalent to the thickness of the finished walls. Sleeves shall be neatly cemented in position concentric with the pipe, after they are in final position. Sleeves shall be sized to accommodate insulation where applicable.

B. Pipe sleeves occurring in areas where membrane waterproofing is involved shall be installed in such a way that a positive seal is formed between the sleeves and the structural slab to prevent water leakage or leakage of waterproofing material in or around the sleeves. Where hot water, dual temperature lines, or other lines that may be hot pass through these sleeves, insulation must be carried through the sleeve unbroken.

C. Exposed pipes passing through walls or ceiling of finished rooms and spaces shall be fitted with escutcheon plates fitted neatly and securely in place. Plates shall be cast iron or brass with chrome or nickel plate finish and fitted with setscrews to hold in place. Plates must be flush and tight against masonry and conceal opening around piping.

3.3 WATER SPECIALTIES

A. Water specialty items shall be furnished as called for on the plans. B. Unit ventilators, fan coil units and coils in the water system and as shown on plans shall be

provided with an air vent, a balancing fitting similar to B & G "Circuit Setter" at the leaving end of the unit, and a union end gate valve on the supply end, unless otherwise noted.

C. Where air vents other than those on the units are called for, these shall be 1/4" globe valves. Air vents shall be installed at all high points of the water system and where shown on the drawings.

D. Water rate of flow indicators shall be installed where noted and shall be B & G or equal. E. Remote bulb type dial thermometers shall be used at all locations where point of reading is more

than 7'-0" above the floor. F. Provide differential meters and accessories as required to properly balance the system. Contractor

shall provide readout meter which shall remain property of Owner. Store meter on shelf in main mechanical room. Readout meter shall be B & G model RO-1 or approved equal, calibrated in feet.

3.4 HANGERS

A. All piping, whether exposed or concealed, shall be substantially supported and made secure, and shall have provision for expansion.

B. Pipe hangers shall be sized to include insulation and shall have a half-round sheet metal protection sleeve.

C. Pipe hangers shall be supported by means of iron hanger rods from the building construction as detailed on plans. Where shown on the plans, or where required, piping shall be hung from angle iron clips or suitable brackets attached to sides of masonry construction.

D. Piping shall be supported on not more than 10 foot centers and within 30" of each change of direction, except that piping 1-1/4" size and smaller shall be supported on not more than 8'-0" centers.

E. Paint all exposed hangers and supports with color compatible with adjacent surfaces.


3.5 EXPANSION PROVISION

A. Where branches are taken off hot/chilled water risers, the tee in the riser shall be located with adequate clearance from the structure or other piping to allow for expansion of the riser without strain on the branch piping.

B. Branches shall be taken off the risers with at least three fittings to form an adequate swing joint. C. For each riser, suitable swing shall be provided at top and bottom connections from mains to risers

to allow for expansion in both main and riser. 3.6 VIBRATION ISOLATION

A. All mechanical equipment over 1 horsepower and unless otherwise noted, shall be isolated from the structure by means of resilient vibration and noise isolators supplied by a single manufacturer. The isolator manufacturer's submittal shall include the complete design for the supplementary bases, a tabulation of the design data on the isolators, operating and solid heights of the springs, free and operating height of the neoprene or fiberglass isolators and isolation efficiency based on the lowest operating speed of the equipment supported.

B. Piping Isolation: 1) All piping over 1" diameter in the mechanical equipment room and piping three supports

away from other mechanical equipment shall be isolated from the structure by means of vibration and noise isolators. Suspended piping shall be isolated with combination spring and fiberglass hangers in the supporting rods. Floor mounted piping shall be supported directly on spring mounts.

2) All piping connected to rotating equipment shall be isolated by the use of flexible vibration pipe connectors having lengths as recommended by the manufacturer and shall be constructed of stainless steel or rubber as noted on the drawing. Metra-flex or equal.


ELECTRICAL EQUIPMENT FOR MECHANICAL 232113 - 1

SECTION 232113 - ELECTRICAL EQUIPMENT FOR MECHANICAL PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Electrical wiring B. Motors C. Starters D. Disconnects

1.2 SUBMITTALS

A. Product data: Provide product description, electrical characteristics, electrical loads, manufacturer, model, size, horsepower, etc.

1.3 CODES, STANDARDS, QUALIFICATIONS

A. All work shall conform to North Carolina State Building Code - Volume IV - Electrical and the requirements of Division 26.

B. All electrical equipment shall be UL approved. C. Electrical work shall be performed by a qualified licensed electrical sub-contractor as approved by

the Engineer. PART 2 – PRODUCTS ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED. 2.1 WIRING

A. All wiring and conduit shall be in accordance with the requirements of Division 26. B. Low voltage control wiring shall be not less than #16-gauge wire run in metallic conduit.

2.2 MOTORS

A. Motors shall be built in accordance with the latest standards of NEMA and as specified. Motors shall be tested in accordance with standards of ASA C50 and conform thereto for insulation resistance and dielectric strength. Motors shall be provided with conduit terminal box, adequate starting and protective equipment as specified or required. Capacity shall be sufficient to operate associated driven devices under all conditions of operation and load and without overload, and at least shall be the horsepower indicted or specified. Motors shall be selected for quiet operation.

B. Motors less than 1/2 HP shall be 115 volts, single phase. Motors 1/2 HP and larger shall be 3-phase multi-tap unless otherwise indicated. Voltage for 3-phase motors is noted in schedules. Coordinate electrical service requirements with electrical contractor.

C. Motors shall be provided with overload protection. On 3-phase motors overload protection shall be in the starters. Single-phase motors shall have built-in thermal overload protection.

.D. Motors shall be of sufficient size for the duty to be performed, not less than that indicated on the drawings, and shall not exceed their full rated load when the driven equipment is operating at specified capacity under the most severe conditions likely to be encountered. All motors shall be for continuous duty classification based on 40°C ambient temperature unless otherwise indicated.

E. All motors provided in this project shall be “Premium Efficiency Motors”. 2.3 STARTERS

A. Individual motor controllers, complete with two auxiliary contacts, control transformers, pushbuttons, selector switches, pilot lights and remote pushbutton stations, and specified to be furnished with the equipment shall be provided under this section. Motor controllers shall comply with NEMA Standards and be complete with proper size heaters and auxiliary contacts and shall

ELECTRICAL EQUIPMENT FOR MECHANICAL 232113 - 2

be in NEMA enclosures as required. Unless otherwise noted, pushbutton stations shall be oil-tight heavy duty type. Controllers shall be manual, magnetic, or combination type with fused disconnect switch or circuit breaker as indicted on the drawings or where required by the NEC. Controllers shall include motor overcurrent protection in each phase conductor. Each motor controller shall be provided with phenolic nameplate, black with white lettering, identifying equipment served and attached using countersunk screws.

B. Circuit breakers shall be molded base type, trip free, with each pole having thermal inverse time delay magnetic with control center requirements. Operating handles shall be interlocked with the unit doors so that the disconnect means cannot be switched on unless the door is closed. The interlock shall prevent opening the unit door unless the disconnect is in the "off" position. A defeat mechanism for this action requiring the use of a screwdriver shall be provided for use by operating personnel to gain access to the unit without interrupting service. Circuit breakers shall have provision for locking in the "off" position.

C. Starters shall be manufactured by Siemens, G.E. Co., I.T.E., Westinghouse or approved equal. Starters shall be motor rated. All starters shall have H.O.A. switches.

2.4 DISCONNECTS

A. Disconnects for mechanical equipment are provided under Division 26. Coordinate with electrical sub-contractor for proper sizing and electrical characteristics of disconnects.

PART 3 - EXECUTION 3.1 WIRING

A. Regardless of voltage, furnish and install all temperature control wiring, all interlock wiring and all equipment control wiring for the equipment furnished. Furnish starters for each motor to the Electrical Contractor unless otherwise noted. Provide and be responsible for the heaters in all starters.

B. Electrical Contractor will furnish and install all wiring except: (a) temperature control wiring; (b) equipment control wiring; (c) interlock wiring. Electrical Contractor will furnish and install all power wiring complete from power source to motor or equipment junction box, including power wiring through starters. Electrical Contractor will install all starters and disconnects not factory mounted on equipment.

C. Check with Electrical Contractor on service outlets provided to determine that service, circuit protection, switches and wiring provided are of adequate size to meet Code requirements for equipment provided. Discrepancies shall be brought to the attention of the Engineer before work is installed. Cost for changes not so noted shall be at the expense of this Contractor. Electrical cost increase due to equipment substitution of different electrical characteristics shall be this Contractor's expense.

D. Provide necessary electrical data for the packaged equipment, motors, controls, etc. to the Electrical Contractor for proper coordination and electrical service.

E. After all circuits are energized and completed; the Electrical Contractor will be responsible for all power wiring. Control wiring shall be the responsibility of this Contractor. Motors and equipment shall be provided for current characteristics as shown on the drawings.

F. Wiring shall be run in conduit.


PUMPS 232123 - 1

SECTION 232123 - PUMPS PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Pumps 1.2 RELATED WORK

A. Section 230000 General Provisions Mechanical B. Section 230700 Mechanical Insulation

1.3 SUBMITTALS

A. Product Data: Provide product description, electrical characteristics, manufacturer, model, size, capacity, arrangement, etc.

B. All equipment shall be UL labeled. PART 2 - PRODUCTS ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED. 2.1 PUMPS

A. Pumps shall be non-overloading centrifugal end suction type, base mounted or in-line, as scheduled. All operating parts shall be accessible without disturbing piping or motor connections. Tapped gauge openings at suction and discharge nozzles shall be provided.

B. Pumps shall be specifically designed for quiet operation and guaranteed by the manufacturer for hot water application.

C. Pump shall be equipped with watertight internally-flushed mechanical seals suitable for continuous operation at 210 degrees F.

D. Pumps shall be rated for minimum of 175 psi working pressure or 1-1/2 times actual discharge pressure (pump head plus static head) whichever is greater. Casings shall have gauge tappings at suction and discharge nozzles and shall include drain and vent ports.

E. Pump volute shall be class 30 cast iron. Impellers shall be cast bronze, enclosed-type, dynamically balanced, rated to shaft and secured by locking capscrew. Impellers shall be cut to provide capacities scheduled.

F. Motor shall be “Premium Efficiency Motors and shall meet NEMA specifications and be size, voltage, and enclosure indicated on drawings. Motor shall have heavy-duty grease lubricated ball bearings or oil bath bronze sleeve type completely adequate for maximum load for which motor is designed. Bearings shall be effectively scaled to prevent loss of lubricant and entrance of dirt or water.

G. Pump motor and pump shall be factory mounted and aligned. H. Pump drives shall be protected with guards that comply with OSHA 1910.219 and ANSI B15.1

requirement. PART 3 - EXECUTION 3.1 PUMPS

A. Pump shall be installed dead level, and shall not touch or rest on any part of building structure. B. Electric connection to pump shall be made through the use of flexible conduit (Greenfield) at least

18" long. C. Pump shall be so installed that it can be completely removed without the dismantling or removal of

PUMPS 232123 - 2

any piping or valves. No additional motor support will be allowed. Maximum 5' above floor. D. Motor and coupling shall be checked and properly aligned in strict accordance with the

manufacturer's instructions. E. Adjacent piping shall be carefully fitted and erected so that the pump can be installed or removed

from the pipeline without forcing or springing. F. After system has been completed and pump started, pump and system shall be checked for

vibration and excessive noise and any such noises or vibration shall be immediately corrected. G. Pumps shall be properly supported to prevent excessive stress on motor, pump or bearings.


WATER TREATMENT SYSTEMS 232500 - 1

SECTION 232500 - WATER TREATMENT SYSTEMS PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Water treatment equipment B. Water treatment chemicals C. Water treatment service

1.2 SUBMITTALS

A. Product Data: Provide product description, list of chemicals, chemical specification data, manufacturers installation instruction, chemical use instructions, estimated annual chemical use, chemical unit costs and planned service schedule. Provide written statement of proposed chemical treatment compatibility with existing chemical treatment products.

1.3 ENVIRONMENTAL REQUIREMENTS

A. All equipment and chemicals provided shall be selected to provide minimum environmental impact on local environment and utilities.

1.4 QUALIFICATIONS

A. Water treatment system supplier shall be a specialist, active in the field of industrial water treatment for at least eight years, whose major business is in the field of water treatment. Supplier shall have a regional water analysis laboratory and service department, and have full time personnel within the trading area of the installation.

B. Equipment, chemicals and service shall be supplied by a single water treatment company for undivided responsibility.

PART 2- PRODUCTS ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED. 2.01 EQUIPMENT

A. Existing Shot type solution feeder for closed loop systems in the Maintenance Building shall remain in service and remain connected around water pump loop.

B. New Shot type solution feeder for closed loop systems in the Office Building shall provide and connected around water pump loop.

2.2 CHEMICALS

A. Provide a quantity of chemicals to clean the closed loop systems from all unwanted products of manufacture and construction.

B. Provide a sufficient amount of chemicals to be used during period of initial start up and testing and operation during construction until the Owner accepts the system for beneficial occupancy.

C. Furnish initial supplies of water treatment chemicals as required for 90 days of full load operation. .2.3 TREATMENT SYSTEMS

A. Existing Shot type feeder for the closed loop water circuit (one per system) (Alternate # 1). B. New Shot type feeder for the closed loop water circuit (one per system) (Base Bid).

PART 3 - EXECUTION

WATER TREATMENT SYSTEMS 232500 - 2

3.1 WATER TREATMENT

A. Furnish and/or install the chemical feed equipment and initial amounts of water treatment chemicals for the control of scale, corrosion, pitting, delignification and organic growths.

B. Treatment system supplier shall be responsible for all chemical compositions and dosages.

Formulations shall not contain any ingredients which would be harmful to mechanical systems’ materials of construction.

3.2 INITIAL CLEANOUT

A. Upon completion of the installation of water piping systems, Mechanical Contractor will advise water treatment supplier that systems are ready for cleanout. Treatment supplier shall supply to the contractor necessary chemicals and instructions for the removal of oil, grease, mill, scale and other foreign materials from all piping and heat transfer equipment. Mechanical contractor shall be responsible for all cleaning and flushing operations which shall be supervised by the treatment supplier. Chiller shall not be started until the system has been cleaned, flushed, and refilled with treated water.

B. Prior to extended operation, the boilers and all new pipe work shall be cleaned with a material especially formulated to remove grease, oil, mill scale and other foreign materials. Cleaner will be added to achieve an M.O. Alkalinity of 3,000-3,500 ppm. Apply heat while circulating, slowly raising temperature to 160°F, and circulate for a minimum of 12 hours. Remove heat and circulate to 100°F before flushing and refilling with clean water. Circulate for six hours and then drain. Repeat and continue flushing until analytical tests indicate removal of cleaner and foulents.

C. The treatment supplier shall furnish to the Engineer a certificate that the cleaning of the piping systems has been accomplished to his satisfaction and that the systems have been refilled with his recommended treatment. The treatment supplier will be responsible for keeping the system free from fouling until start-up or will re-clean the system at his expense.

3.3 SUPERVISION

A. The chemical manufacturer shall provide supervision and service for all phases of water treatment as follows: 1) Field supervision for the installation and adjustment of automatic feed equipment and for

the injection of initial dosages of treatment in all systems. 2) Services of a qualified field representative to make complete on-the-spot water analysis of

all systems. A written report of the findings will be left with the Owner and confirmation reports shall be forwarded to the Engineer in duplicate.

3) Pre-cleanout shall be performed by the Mechanical Contractor and supervised by a representative of the chemical company who will submit analysis reports to the Engineer.

3.4 DIAGRAMS AND INSTRUCTIONS

A. Water treatment supplier shall provide a complete system schematic diagram and wiring diagram. System is to be so interlocked that when the system is shut down chemicals will not be fed into the system unnecessarily. Provide operating instructions, training of operation personnel, sample and testing instructions, limits of allowable solid concentrations, periodic field service and consultation.


SECTION 236426 - REFRIGERATION EQUIPMENT

REFRIGERATION EQUIPMENT 236426 - 1

PART 1 - GENERAL

1.00 NOTICE:

ALL PRODUCTS, BUILDING MATERIALS AND EQUIPMENT ON THIS PROJECT SHALL MEET THE DOT “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED.

1.01 SYSTEM DESCRIPTION

Microprocessor controlled, air-cooled liquid chiller for outdoor installation, utilizing scroll compressors, low sound fans and optional (CH-1 ONLY) hydronic pump system.

All fans are controlled with variable speed fan drive motors. Chiller software shall be specifically developed to coordinate optimal fan speed for application conditions and provide refrigerant circuit optimization, resulting in higher part-load effi-ciency and reduced acoustic levels.


A. Unit shall be rated in accordance with AHRI (Air-Conditioning, Heating and Refrigeration Institute) Standard 550/590, latest edition (U.S.A.) and all units shall be in compliance with ASHRAE (American Society of Heating, Refrigeration, and Air-Conditioning Engineers) 90.1.2007 and ASHRAE 90.1 2010.

B. Unit construction shall comply with ASHRAE 15 Safety Code, UL (Underwriters Laboratories) latest edition, and ASME (American Society of Mechanical Engineers) applicable codes (U.S.A. codes).

C. The management system governing the manufacture of this product is ISO 9001:2015 certified.

D. Unit shall be full load run tested at the factory.

1.03 DELIVERY, STORAGE AND HANDLING

A. Unit controls shall be capable of withstanding 150°F (66°C) storage temperatures in the control compartment.

B. Unit shall be stored and handled per unit manufacturer's recommendations.

C. Factory installation instructions shall be included with the chiller.

PART 2 – PRODUCTS

2.01 EQUIPMENT

A. General:

Factory assembled, single-piece air-cooled liquid chiller. Contained within the unit cabinet shall be all factory wiring, pip-ing, controls, refrigerant charge (R-410A), and special features required prior to field start-up.

B. Materials of Construction:

1. The base rail is industrial-quality, 7ga, zinc-dipped, galvanized frame (with Magni-coated screws).

2. Cabinet shall be galvanized steel casing with a baked enamel powder or pre-painted finish.

3. Painted parts shall withstand 1000 hours in constant neutral salt spray under ASTM B117 conditions with a 1 mm scribe per ASTM D1654. After test, painted parts shall show no signs of wrinkling or cracking, no loss of adhesion, no evidence of blistering, and the mean creepage shall not exceed 1/4 in. (Rating 4 per ASTM D1654) on either side of the scribe line.

SECTION 236426 – REFRIGERATION EQUIPMENT


C. Fans:

1. Condenser fans shall be direct-driven (VFD [variable frequency drive] controlled on units with Greenspeed intelligence), 9-blade airfoil cross-section, reinforced polymer construction, shrouded-axial type, and shall be statically and dynamically balanced with inherent corrosion resistance.

2. The variable speed drives for the condenser fans on 30RB units with Greenspeed intelligence shall include a DC link reactor.

3. Air shall be discharged vertically upward.

4. Fans shall be protected by coated steel wire safety guards.

D. Compressor/Compressor Assembly:

1. Fully hermetic scroll type compressors.

2. Direct drive, 3500 rpm (60 Hz), protected by motor temperature sensors, suction gas cooled motor.

3. External vibration isolation rubber-in-shear.

4. Each compressor shall be equipped with crankcase heaters to minimize oil dilution.

E. Cooler:

1. Shell-and-tube type, direct expansion.

2. Tubes shall be internally enhanced seamless-copper type rolled into tube sheets.

3. Shall be equipped with Victaulic-type water connections.

4. Shell shall be insulated with 3/4-in. (19-mm) PVC foam (closed-cell) with a maximum K factor of 0.28.

5. Design shall incorporate a minimum of 2 independent direct-expansion refrigerant circuits.

6. Cooler shall be tested and stamped in accordance with ASME Code for a refrigerant working side pressure of 445 psig (3068 kPa). Cooler shall have a maximum water-side pressure of 300 psig (2068 kPa).

7. Cooler shall be provided with a factory-installed flow switch and heater.

F. Condenser:

1. Coil shall be air-cooled Novation® heat exchanger technology with microchannel (MCHX) coils and shall have a series of flat tubes containing a series of multiple, parallel flow micro-channels layered between the refrigerant manifolds. Coils shall consist of a two-pass arrangement. Coil construction shall consist of aluminum alloys for fins, tubes, and manifolds in combination with a corrosion-resistant coating.

2. Tubes shall be cleaned, dehydrated, and sealed.

3. Assembled condenser coils shall be leak tested and pressure tested at 656 psig (4522 kPa).

4. To plan the chiller installation and for ease of maintenance/coil removal, all refrigerant piping entering and leaving the condenser coils shall be located on only one side of the chiller so the coils can be removed (when needed) from the side free of piping. This is important to consider because removing the coils from the header side, although possible, involves extra labor due to extra bending and brazing of the coil headers.

G. Refrigeration Components:

Refrigerant circuit components shall include replaceable-core filter drier, moisture indicating sight glass, electronic expan-sion device, discharge service valve and liquid line service valves, and complete operating charge of both refrigerant R-410A and compressor oil.

H. Controls, Safeties, and Diagnostics:

1. Unit controls shall include the following minimum components:

a. Microprocessor with non-volatile memory. Battery backup system shall not be accepted.

b. Separate terminal block for power and controls.



c. Control transformer to serve all controllers, relays, and control components.

d. ON/OFF control switch.

e. Replaceable solid-state controllers.

f. Pressure sensors shall be installed to measure suction and discharge pressure. Thermistors shall be installed to measure cooler entering and leaving fluid temperatures.

2. Unit controls shall include the following functions:

a. Automatic circuit lead/lag.

b. Hermetic scroll compressors are maintenance free and protected by an auto-adaptive control that minimizes compressor wear.

c. Capacity control based on leaving chilled fluid temperature and compensated by rate of change of return-fluid temperature with temperature set point accuracy to 0.1°F (0.06°C).

d. Limiting the chilled fluid temperature pull-down rate at start-up to an adjustable range of 0.2°F to 2°F (0.11°C to 1.1°C) per minute to prevent excessive demand spikes at start-up.

e. Seven-day time schedule.

f. Leaving chilled fluid temperature reset from return fluid and outside air temperature.

i. Chilled water pump start/stop control.

i. Timed maintenance scheduling to signal maintenance activities for pumps, strainer maintenance and user-defined maintenance activities.

j. Low ambient protection to energize cooler or hydronic system heaters.

k. Periodic pump starts to ensure pump seals are properly maintained during off-season periods. (CH-1 Only).

3. Diagnostics:

a. The control panel shall include, as standard, a scrolling marquee display capable of indicating the safety lockout condition by displaying a code for which an explanation may be scrolled at the display with time and date stamp.

b. Information included for display shall be: 1.) Compressor lockout. 2.) Loss of charge. 3.) Low fluid flow. 4.) Cooler coil freeze protection. 5.) Cooler set point. 6.) Chilled water reset parameters. 7.) Thermistor and transducer malfunction. 8.) Entering and leaving-fluid temperature. 9.) Evaporator and condenser pressure. 10.) System refrigerant temperatures. 11.) Chiller run hours. 12.) Compressor run hours. 13.) Compressor number of starts.

Time of day: a) Display module, in conjunction with the microprocessor, must also be capable of

displaying the output (results) of a service test. Service test shall verify operation of every switch, thermistor, fan, and compressor before chiller is started.

b) Diagnostics shall include the ability to review a list of the 30 most recent alarms with clear language descriptions of the alarm event. Display of alarm codes without the ability for clear language descriptions shall be prohibited.



c) An alarm history buffer shall allow the user to store no less than 30 alarm events with clear language descriptions, time and date stamp event entry.

d) The chiller controller shall include multiple connection ports for communicating with the local equipment network, the Carrier Comfort Network® (CCN) system and access to chiller control functions from any point on the chiller.

e) The control system shall allow software upgrade without the need for new hardware modules.

Crankcase heater failure. 4. Safeties:

a. Unit shall be equipped with thermistors and all necessary components in conjunction with the control system to provide the unit with the following protections: 1.) Loss of refrigerant charge. 2.) Reverse rotation. 3.) Low chilled fluid temperature. 4.) Thermal overload. 5.) High pressure. 6.) Electrical overload.

b. Condenser fan and factory pump motors shall have external overcurrent protection.

I. Operating Characteristics:

1. Unit shall be capable of starting and running at outdoor ambient temperatures from 32°F to 125°F (0°to52°C) for all sizes.

2. Unit shall be capable of starting up with 95°F (35°C) entering fluid temperature to the cooler.

J. Motors:

Condenser-fan motors shall be totally enclosed single-speed, 3-phase type with permanently lubricated bearings and Class F insulation.

K. Electrical Requirements:

1. Unit/module primary electrical power supply shall enter the unit at a single location.

2. Unit shall operate on 3-phase power at the voltage shown in the equipment schedule.

3. Control points shall be accessed through terminal block.

4. Unit shall be shipped with factory control and power wiring installed.

L. Chilled Water Circuit:

1. Chilled water circuit shall be rated for 300 psig (2068 kPa). Units with optional pump package are rated for 150 psig (1034 kPa) working pressure.

2. Thermal dispersion proof of flow switch shall be factory installed and wired.

3. Optional hydronic package:

a. CH-1 only: 1.) Field pipe connections shall be Victaulic type. 2.) Pumps shall be vertical in-line, single stage design, and capable of being serviced without disturbing piping connections.

a) Pump casing shall be of class 30 cast iron. b) The impeller shall be of cast bronze, closed type, dynamically balanced, keyed to

the shaft and secured by locking cap screw. c) The hydronic kit will be provided with a flush line connection to ensure lubrication

at the seal face and allow for positive venting of the seal chamber. d) Pump shall be rated for 150 psig (1034 kPa) working pressure. f) The pump case shall have gage tapings at the suction and discharge nozzles and

include drain ports.



g) Motors shall be premium efficiency, totally enclosed fan cooled (TEFC) 3-phase type with grease lubricated ball bearings. i) Each pump shall be factory tested per Hydraulic Institute Standards.

4.) Pressure/temperature taps (3) shall be factory installed to measure the pressure differential across the pump and across the strainer.

5.) Combination valve (which includes check, isolation, and modulation) shall be factory in stalled. Pressure/temperature taps (2) shall be factory installed to measure the pressure differential across the combination valve.

6.) Hydronic assembly shall have factory-supplied electric freeze protection to –20°F (–29°C).

7.) Piping shall be Schedule 40 black steel. 8.) Cast iron or ductile iron body 1/8-in. perforated strainer. A factory-installed, removable

fine mesh start-up strainer for initial run period shall be included. The start-strainer must be removed within 24 hours after chiller start-up.

M. Special Features:

1. Unit-Mounted Non-Fused Disconnect:

Unit shall be supplied with factory-installed, non-fused electrical disconnect for main power supply.

2. Minimum Load Control:

Unit shall be equipped with field-installed, microprocessor-controlled, minimum load control that shall permit unit operation down to a minimum of 6% capacity (varies with unit size).

3. Full Hail Guard:

Unit shall be equipped with field-installed accessory consisting of hinged, louvered panels, which cover both ends of the unit. This accessory provides complete protection from hail.

4. GFI Convenience Outlet:

Shall be factory or field-installed and mounted with easily accessible 115-v female receptacle and shall include a 4-amp GFI receptacle.

5. Provide chiller controls as required to interface with existing Carrier CCN Controls for integrated operation with existing BAS.


VARIABLE FREQUENCY DRIVES 238500 - 1

SECTION 238500 - VARIABLE FREQUENCY DRIVES PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Variable Frequency Drives (VFDs) 1.2 ACCEPTABLE MANUFACTURERS A. Basis of design is ABB ACH 580 VFD or equal by Graham or Toshiba. ALL PRODUCTS, BUILDING MATERIALS, AND EQUIPMENT ON THIS PROJECT SHALL MEET FTA “BUY AMERICA” REQUIREMENTS. EACH SHOP DRAWING SUBMITTAL SHALL BE ACCOMPANIED WITH A LETTER OF CERTIFICATION FROM THE MANUFACTURER REGARDLESS OF WHETHER OR NOT THE ITEM WAS SPECIFIED. 1.2 SUBMITTALS

A. Submit manufacturers performance data including dimensional drawings, power circuit diagrams, installation and maintenance manuals, warranty description, VFDs FLA rating, certification agency file numbers and catalog information.

B. The specification lists the minimum VFD performance requirements for this project. Each supplier shall list any exceptions to the specification. If no departures from the specification are identified, the supplier shall be bound by the specification.

C. Harmonic filtering. The seller shall, with the aid of the buyer’s electrical power single line diagram, providing the data required by 1EEE-519, perform an analysis to initially demonstrate the supplied equipment will meet the 1EEE standards after installation. If as a result of the analysis, it is determined that additional filter equipment is required to meet the 1EEE recommendations, them the cost of such equipment shall be included in the bid. A harmonic analysis shall be submitted with the approval drawings to verify compliance with the latest version of 1EEE-519 voltage and current distortion limits as shown in table 10.2 and 10.3 at the point of common coupling (PCC). The PCC shall be defined as the consumer-utility interface or primary side of the main distribution transformer.


A. To ensure quality and minimize infantile failures at the jobsite, the complete VFD shall be tested by the manufacturer. The VFD shall operate a dynamometer at full load and speed and shall be cycled during the test.

B. All optional features shall be functionally tested at the factory for proper operation. 1.4 REFERENCES

A. UL 508 B. NEC C. Canadian Underwriters laboratory (C-UL)

PART 2 - PRODUCTS 2.1 VARILBLE FREQUENCY DRIVES (VFDs)

A. Furnish complete variable frequency VFDs as specified herein for the pumps designated on the drawing schedules to be variable speed. All standard and optional features shall be included within the VFD enclosure, unless otherwise specified. VFD shall be housed in a metal NEMA 1 enclosure, or other NEMA type according to the installation and operating conditions at the job site. The VFDs UL listing shall allow mounting in plenum or other air handling compartments. If a NEMA 12 enclosure is required for the plenum rating, the manufacturer must supply a NEMA 12 rated VFD.

B. The VFD shall convert incoming fixed frequency three-phase AC power into a variable frequency and voltage for controlling the speed of three-phase AC motors. The motor current shall closely


approximate a sine wave. Motor voltage shall be varied with frequency to maintain desired motor magnetization current suitable for centrifugal pump and fan control and to eliminate the need for motor de-rating.

C. With the motor’s rated voltage applied to the VFD input, the VFD shall allow the motor to produce full rated power at rated amps, RMS fundamental volt, and speed without using the motor’s service factor. VFDs utilizing sine weighted/coded modulation (with or without 3rd harmonic injection) must provide data verifying that the motors will not draw more than full load current during full load and full speed operation.

D. The VFD shall include an input full-wave bridge rectifier and maintain a fundamental power factor near unity regardless of speed or load.

E. The VFD and options shall be tested to ANSI/UL Standard 508. The complete VFD, including all specified options, shall be assembled by the manufacturer, which shall be UL-508 certified for the building and assembly of option panels. Assembly of the option panels by a third-party panel shop is not acceptable. The appropriate UL stickers shall be applied to both the VFD and option panel, in the case where these are not contained in one panel. When these VFD and option panel shall be manufactured in ISO 9001 certified facilities.

F. The VFD shall have DC link reactors on both the positive and negative rails of the DC bus to minimize power line harmonics. VFDs without DC link reactors shall provide a minimum 3% impedance line reactor.

G. The VFD’s full load amp rating shall meet or exceed NEC Table 430-150. The VFD shall be able to provide full rated output current continuously, 110% of rated current for 60 seconds and 160% of rated current for up to 0.5 second while starting.

H. The VFD shall be able to provide full torque at any selected frequency from 28 Hz to base speed to allow driving direct drive fans without de-rating.

I. An automatic energy optimization selection feature shall be provided standard in the VFD. This feature shall automatically and continually monitor the motor’s speed and load and adjust the applied voltage to maximize energy savings and provide up to an additional 3% to 10% energy savings.

J. Input and output power circuit switching shall be able to be accomplished done without interlocks or damage to the VFD. Switching rate may be up to 1 time per minute on the input and unlimited on the output.

K. An automatic motor adaptation test algorithm shall measure motor stator resistance and reactance to optimize performance and efficiency. It shall not be necessary to run the motor or de-couple the motor from the load to run the test.

L. Galvanic and/or optical isolation shall be provided between the VFD’s power circuitry and control circuitry to ensure operator safety and to protect connected electronic control equipment from damage caused by voltage spikes, current surges, and ground loop currents. VFDs not including either galvanic or optical isolation on both analog I/O and discrete I/O shall include additional isolation modules.

M. VFD shall minimize the audible motor noise through the used of an adjustable carrier frequency. The carrier frequency shall be automatically adjusted to optimize motor and VFD efficiencies while reducing motor noise.

N. Protective Features: a. A minimum of Class 20 I² t electronic motor overload protection for single motor applications

and thermal-mechanical overloads for multiple motor applications shall be provided. b. Protect VFD from sustained power or phase loss. The VFD shall provide full rated output

with an input voltage as low as 90% of the nominal. The VFD will continue to operate with reduced output with an input voltage as low as 164 V AC for 208/230 volt units, and 313 V AC for 460 volt units.

c. The VFD shall incorporate a motor preheat circuit to keep the motor warn and prevent condensation build up in the stator.

d. VFD package shall include semi-conductor rated input fuses to protect power components. e. To prevent breakdown of the motor winding insulation, the VFD shall be designed to comply

with IEC Part 34-17. Otherwise the VFD manufacturer must ensure that inverter rated motors are supplied.


f. VFD shall include a “signal loss detection” circuit to sense the loss of an analog input signal such as 4 to 20 mA or 2 to 10 V DC, and shall be programmable to react as desired in such an instance.

g. VFD shall function normally when the keypad is removed while the VFD is running and continue to follow remote commands. No warnings or alarms shall be issued as a result of removing the keypad.

h. VFD shall catch a rotating motor operating forward or reverse up to full speed. i. VFD shall be rated for 100,000 amp interrupting capacity (AIC). j. VFD shall include current sensors on all three output phases to detect and report phase loss to

the motor. The VFD will identify which of the output phases is low or lost. k. VFD shall continue to operate without faulting until input voltage reaches 300 V AC on

208/230 volt VFDs, and 460 volt VFDs O. Interface Features

a. Hand/Start, Off/Stop and Auto/Start selector switches shall be provided to start and stop the VFD and determine the speed reference.

b. The VFD shall be able to be programmed to provide a 24 V DC output signal to indicate that the VFD is in Auto/Remote mode.

c. The VFD shall provide digital manual speed control. Potentiometers are not acceptable. d. Lockable, alphanumeric backlit display keypad can be remotely mounted up to 10 feet away

using standard 9-pin cable. e. The keypads for all sizes of VFDs shall be identical and interchangeable f. To set up multiple VFDs, it shall be possible to upload all setup parameters to the VFD’s

keypad, place that keypad on all other VFDs in turn and download the setup parameters to each VFD. To facilitate setting up VFDs of various sizes, it shall be possible to download from the keypad only size independent parameters.

g. Display shall be programmable to display in 9 languages including English, Spanish and French.

h. The display shall have for lines, with 20 characters on three lines and eight large characters on one line.

i. A red FAULT light, a yellow WARNING light and a green POWER-ON light shall be provided. These indications shall be visible both on the keypad and on the VFD when the keypad is removed.

j. A quick setup menu with factory preset typical HVAC parameters shall be provided on the VFD eliminating the need for macros.

k. The VFD shall include a standard RS-485 communications port and capabilities to be connected at a DDC Building Controls system at no additional cost to the owner. The connection shall be software selectable by the user.

l. As a minimum, the following points shall be controlled and/or accessible: a. VFD Start/Stop b. Speed reference c. Fault diagnostics d. Meter points

1. Motor power in HP 2. Motor power in kW 3. Motor kW-hr 4. Motor current 5. Motor voltage 6. Hours run 7. Feedback signal #1 8. Feedback signal #2 9. DC link voltage 10. Thermal load on motor 11. Thermal load on VFD 12. Heatsink temperature

m. Four additional Form C 230 volt programmable relays shall be available for factory or field installation within the VFD.


n. Lon-Works communication shall be available for factory or field installation within the VFD. o. Two set-point control interface (PID control) shall be standard in the unit. VFD shall be able

to look at two feedback signals, compare with two set points and make various process control decisions.

p. Floating point control interface shall be provided to increase/decrease speed in response to contact closures.

q. Sleep mode shall be provided to automatically stop the VFD when its speed drops below set “sleep” level for a specified time. The BFD shall automatically restart when the speed command exceeds the set “wake” level.

r. The sleep mode shall be functional in both follower mode and PID mode. s. Run permissive circuit shall be provided to accept a “system ready” signal to ensure that the

VFD does not start until dampers or other auxiliary equipment are in the proper state for VFD operation. The run permissive circuit shall also be capable of sending an output signal as a start command to actuate external equipment before allowing the VFD to start.

t. T he following displays shall be accessible from the control panel in actual units: Reference Signal Valve in actual units, Output Frequency in Hz or percent, Output Amps, Motor HP, Motor kW, whir, Output Voltage, DC Bus Voltage, VFD Temperature in degrees, and Motor Speed in engineering units per application (in GPM, CFM, etc.). VFD will read out the selected engineering unit either in a linear, square to cubed relationship to output frequency as appropriate to the unit chosen.

u. T he displays shall be programmed to read in inches of water column (in-wg) for fan and air handler application.

v. V FD shall be able to be programmed to sense the loss of load and single a no load/broken belt warning or fault.

w. I f the temperature of the VFD’s heat sink rises to 80 ºC, the VFD shall automatically reduce its carrier frequency to reduce the heat sink temperature. If the temperature of the heat sink continues to rise the VFD shall automatically reduce its output frequency to the motor. As the VFD’s heat sink temperature returns to normal, the VFD shall automatically increase the output frequency to the motor and return the carrier to its normal switching speed.

x. The VFD shall have temperature controlled cooling fans for quiet operation and minimized losses.

y. The VFD shall store in memory the last 10 faults and related operational data. z. Eight programmable digital inputs shall be provided for interfacing with the systems control

and safety interlock circuitry. aa. Two programmable relay outputs, one Form C 240 V AC, one Form A 30 V AC, shall be

provided for remote indication of VFD status. bb. Three programmable analog inputs shall be provided and shall accept a direct-or-reverse

acting signal. Analog reference inputs accepted shall include two voltages (0 to 10 V DC, 2 to 10 V DC) and one current (0 to 20 mA) input.

cc. Two programmable 0 to 20 mA analog outputs shall be provided for indication of VFD status. These outputs shall be programmable for output speed, frequency, current and power. They shall also be programmable to provide a selected 24 V DC status indication.

dd. Under fire mode conditions, the VFD shall be able to be programmed to automatically default to a preset speed.

P. Adjustments a. VFD shall have an adjustable carrier frequency in steps of not less than 0.1 kHz to allow

turning the VFD to the motor. b. Sixteen preset speeds shall be provided. c. Four acceleration and four deceleration ramps shall be provided. Acceleration and

Deceleration time shall be adjustable over the range from 0 to 3.600 seconds to base speed. The shape of these curves shall be automatically contoured to ensure no-trip acceleration and deceleration

d. Four current limit settings shall be provided. e. If the VFD trips on one of the following conditions, the VFD shall be programmable for

automatic or manual reset: under-voltage, over-voltage, current limit and inverter over-load.


f. The number of restart attempts shall be adjustable from 0 through 20 or infinitely and the time between attempts shall be adjustable from 0 through 600 seconds.

g. An automatic “on delay” may be selected from 0 to 120 seconds. Q. Bypass

1) Provide a manual 3-contactor bypass consisting of a door interlocked main fused disconnect pad-lockable in the off position, a built-in motor starter and a four position DRIVE/OFF/BYPASS/TEST switch controlling three contactors. In the DRIVE position, the motor is operated at an adjustable speed from the VFD. In the OFF position, the motor and VFD are disconnected. In the BYPASS position, the motor is operated at full speed from the AC power line and power is disconnected from the VFD so that service can be performed. In the TEST position, the motor is operated at full speed from the AC power while power is applied to the input of the VFD. This allows the VFD to be given an operational test while continuing to run the motor at full speed in bypass. In case of an external safety fault, a customer supplied normally closed dry contact shall be able to stop the motor whether in DRIVE or BYPASS mode. a. Service personnel shall be able to defeat the main power disconnect and open the bypass

enclosure without disconnecting power. This shall be accomplished through the use of a specially designed tool and mechanism while meeting all local and national code requirements for safety.

R. Service Conditions 1) Ambient temperature, -10 to 40 º C (14 to 104 degrees F). 2) 0 to 95% relative humidity, non-condensing. 3) Elevation to 3,300 feet without de-rating. 4) AC line voltage variation, -10 to 10% of nominal with full output. 5) No side clearance shall be required for cooling of any units. All power and control

wiring shall be done from the bottom. S. VFD shall be as manufactured by AAB, Square D Company, or Panasonic. ALL VFDs on the

project shall be by the same manufacturer. PART 3 - EXECUTION 3.1 START-UP SERVICE

A. The manufacturer shall provide start-up commissioning of the VFD and it’s optional circuits by a factory certified service technician who is experienced in start-up and repair services. Sales personnel and other agents who are not factory certified shall not be acceptable as COMMISSIONING agents. Start-up services shall include checking for verification of proper operation and installation for the VFD, its options and it’s interface wiring to the building automation system.

B. Warranty The VFD shall be warranted by the manufacturer for a period of 36 months from date of shipment. The warranty shall include parts, labor, travel costs and living expenses incurred by the manufacturer to provide factory authorized on-site service. The warranty shall be provided by the VFD Manufacturer.

3.2 EXAMINATION

A. Contractor to verify that job site conditions for installation meet factory recommended and code-required conditions for VFD installation prior to start-up, including clearance spacing, temperature, contamination, dust, moisture of the environment. Separate conduit installation of the motor wiring, power wiring, and control wiring, and installation per the manufacturer’s recommendations shall be verified.

B. The VFD is to be covered and protected from installation dust and contamination until the environment is cleaned and ready for operation. The VFD shall not be operated while the unit is covered.

ELECTRICAL GENERAL REQUIREMENTS 260100 - 1

SECTION 260100 - ELECTRICAL GENERAL REQUIREMENTS PART 1 - GENERAL 1.1 SCOPE

A. General Conditions of the contract, special conditions and instructions to bidders contained herein are a part of these specifications.

B. This Contractor shall provide temporary electrical service to job site (if required) and pay for all

associated costs. C. This contractor shall furnish all labor, materials and equipment and perform all operations necessary

for installation of complete electrical work within the intent of, and as indicated on the drawings, and as herein specified.

D. All products, building materials, and equipment on this project shall meet FTA “Buy America”

requirements. Each shop drawing submittal shall be accompanied with a letter of certification from the manufacturer regardless of whether or not the item was specified.

1.2 CONTRACT DOCUMENTS

A. The contract drawings are diagrammatic and are not intended to indicate every detail of construction or every item of material or equipment required.

B. Contractor shall maintain on the job site one complete set of contract documents of all trades, and shall

coordinate with other trades so as to avoid conflicts.

C. Indicated locations of outlets, equipment connections, etc., are approximate and shall be verified by reference to related documents (i.e., Architectural casework drawings, equipment shop drawings, lab equipment casework drawings, etc.).

D. If there are any conflicts between the contract documents, and applicable Codes, the applicable Codes

shall take priority, and the engineer shall be notified immediately of conflict. 1.3 RECORD DRAWINGS

A. During construction of this project, contractor shall maintain one complete set of electrical contract drawings on which shall be recorded all significant changes in equipment locations, circuit assignments, etc. This set of drawings shall be used to prepare as-built drawings to be submitted to the Owner upon completion.

B. Upon completion of the project, contractor shall prepare operation and maintenance manuals for all

electrical equipment. It shall include catalog data, equipment information, wiring diagrams, warranty information, etc., for the electrical installation. Submit five copies to the Architect/Engineer for approval and presentation to the Owner.

1.4 REGULATIONS AND COMPLIANCE

A. Latest editions of National Electrical Code, state codes or ordinances, including the North Carolina State Building Code, govern this work. All their requirements shall be satisfied.

B. This contractor shall secure and pay for all permits, fees, inspections and licenses required (see the

General Conditions). Upon completion of the job, he shall present to the Architect/Engineer a certificate of inspection and approval from inspection authorities.


1.5 TEST AND GUARANTEE

A. Upon completion of work, contractor shall demonstrate installation and make such tests as may be

required to satisfy the Architect/Engineer and the Owner that work is installed in accordance with drawings, specifications and instructions.

B. Contractor shall guarantee the work is done in accordance with drawings and specifications and is free

of imperfect materials and defective workmanship. Anything unsatisfactory shall be corrected immediately and at contractor’s expense.

C. For a period of one year after acceptance, contractor shall replace, without any expense to the Owner,

any imperfect materials or defective workmanship. PART 2 - PRODUCTS 2.1 GENERAL

A. All materials, devices, appliances, and equipment shall be new, label listed by an approved third party testing agency approved by this state, and provided with manufacturer’s label or nameplate giving complete electrical data.

B. Where a manufacturer’s catalog number is used, all parts shall be furnished to make it complete and fit

the construction intended.

C. Materials shall be the make and number given in these specifications or shown on drawings or approved equivalent. If contractor wished to furnish another make or number, he shall furnish complete, detailed data and obtain approval of it in writing from the Architect/Engineer.

D. Complete adequate housing shall be provided on the site for orderly and careful storage of all materials

and equipment. 2.2 SUBMITTALS, ETC.

A. Within twenty days after award of contract, contractor shall submit to Architect/Engineer a complete list in triplicate of ALL materials he proposes to use. List shall show a single manufacturer for each item. List shall include not only major materials and equipment, but also such items as conduit fittings, bushings, ground clamps, anchors, outlet boxes, gutters, terminal cabinets, wire-pulling compound, splice connections, tape, wire markers, fuses, lamps, etc.

B. Submit cuts of fixtures, shop drawings on panelboards and any other descriptive materials requested, in

six copies. PART 3 - EXECUTION 3.1 EXCAVATION

A. Required excavation for installation of all electrical work shall be provided by the Electrical Contractor.

B. The Electrical Contractor shall provide an allowance contract sum for the removal and off-site disposal

of trench rock excavation. Allowance shall state cost per cubic yard removal. 3.2 CUTTING, PATCHING, ETC.


A. Contractor shall place his own sleeves and advise other trades of required chases and openings so they can be properly built-in. Where any raceways, supports, etc., installed under this contract pierce the roof, suitable pitch pockets shall be provided and coordinated with the roofing contractor as necessary to be acceptable to the Architect. Provide suitable fittings where any raceways or equipment cross expansion joints. Expansion fittings shall be complete with grounding type bond fittings.

B. Permitted cutting or patching necessary to the electrical installation shall be done by this contractor.

Structural members shall not be cut except by written permission of Architect/Engineer. 3.3 CLEANING, ETC.

A. Contractor shall properly protect his work against damage by weather or other trades. All work shall

be left well cleaned, and damaged finishes shall be restored to original conditions.

B. Contractor shall keep premises free of debris resulting from this work. 3.4 PAINTING, FINISHING

A. Suitable finishes shall be provided on all items of electrical equipment, conduit, etc., which are exposed. This shall consist of either an acceptable finish as manufactured and supplied to the job or application of suitable finishes after installation.

B. Where installed in finished areas, exposed equipment, raceways, etc. (e.g. panel covers, wiremold,

etc.), shall be supplied with prime coat and shall be professionally painted or enameled as directed to match or blend with adjacent surfaces.

C. In unfinished areas, such as equipment rooms, etc., exposed equipment shall be furnished with suitable

factory applied finishes. (i.e., standard gray enamel finish for panelboards, etc.).

D. Equipment furnished in finishes such as stainless steel, brushed aluminum, etc., shall not be painted.

E. All finishing shall be as directed by and shall be satisfactory to the Architect/Engineer. 3.5 EQUIPMENT LABELS

A. Suitable labels shall be provided for the identification of major items or electrical equipment including switchboards, panelboards, motor starters, safety switches, enclosed circuit breakers, etc.

B. Labels shall have color scheme as follows:

1. Blue background with white letter – 120/208 volt equipment 2. Black background with white letters – 277/480 volt equipment. 3. Bright red background with white letters – Fire alarm system equipment. 4. Dark red (burgundy) background with white letters – Security system equipment. 5. Green background with white letter – “Emergency” system equipment. 6. Orange background with white letters – Telephone system equipment. 7. Brown background with white letters – Data system equipment. 8. White background with black letters – paging system equipment. 9. Purple background with white letters – TV system equipment.

C. Engraving shall be of professional quality, with block style letters, minimum 1/2” high. D. Nameplates shall be attached with 2 cadmium-plated screws. Nameplates shall under no conditions be

attached with epoxy glue or double stick tape.


E. Electrical Contractor shall paint all junction boxes using the color scheme described above; in order to indicate what system each junction box is part of.

F. All junction boxes and pull boxes shall have their covers and exterior visible surfaces painted with

colors to match the surface color scheme outlined above. This includes covers on boxes above lift-out and other type accessible ceilings.


ELECTRICAL TESTING 260126 - 1

SECTION 260126 - ELECTRICAL TESTING PART 1 - GENERAL 1.1 SCOPE

A. Furnish all required testing as herein specified along with all required equipment, consumables, wires, men, tools, etc.

B. All products, building materials, and equipment on this project shall meet FTA “Buy America” requirements. Each shop drawing submittal shall be accompanied with a letter of certification from the manufacturer regardless of whether or not the item was specified.

PART 2 - PRODUCTS 2.1 FEEDER INSULATION RESISTANCE TEST

A. All current-carrying phase conductors and neutrals shall be tested as installed and before connections are made for insulation resistance and accidental grounds. This shall be done with a 500-volt high type megger.

B. Minimum readings shall be one million (1,000,000) or more Ohms for #6 wire and smaller;

250,000 Ohms or more for #4 wire or larger between conductors and the grounded metal raceway.

C. After all fixtures, devices, and equipment are installed and all connections completed to each

panel, disconnect the neutral feeder conductor from the neutral bar and take a megger reading between the neutral bar and the grounded can. If this reading is less than 250,000 Ohms, disconnect the branch circuit (or sub-feeder) neutral wires from this neutral bar. Test each one separately to the panel can until the low reading ones are found. Correct troubles, reconnect and retest until at least 250,000 Ohms from the neutral bar to the grounded panel can is achieved with only the neutral feeder disconnected.

D. Send a letter to the Engineer certifying that the above has been done and tabulating the megger

readings for each new panel. This shall be done at least four days before final review is called for.

2.2 GROUND SYSTEM TESTS

A. Testing of the new ground system shall consist of the following:

1. Visual inspection of all connections. 2. Full Potential Test per IEEE Standard #81, Section 9.04 and NETA test Specification Section

7.16. 3. Two point test per IEEE Standard 81 Section 9.03 and Neta test Specification Section

7.16. 4. Reading shall be taken between the following minimum items, and given in Ohms:

a. MSB neutral to ground b. MSB ground to building steel c. MSB to power company transformer

5. All ground reading shall be 5 Ohms or less. If readings are above 5 Ohms, notify the Engineer prior to additional work being performed.

2.3 CIRCUIT BREAKER TESTS

ELECTRICAL TESTING 260126 - 2

A. Perform the following tests on the new switchboard and distribution circuit breakers with adjustable trips, and tabulate all readings. Testing shall be performed by a qualified factory technician: 1. Phase tripping tolerance (within 20% of UL requirements). 2. Trip time (in seconds) per phase. 3. Instantaneous trip (amps) per phase. 4. Insulation resistance (mega-ohms) at 1000V: Phase to Phase and Line to Load.

PART 3 - EXECUTION 3.1 DOCUMENTATION

A. All tests specified shall be completely documented indicating time of day, date, temperature, and all pertinent test information. Copies of all test documentation shall be included in final closeout O & M Manuals to be given to the Owner.

B. At final review, the contractor shall furnish a megger and show the Engineer’s Representative

that the panels comply with the above requirements. He shall also furnish a hook on type ammeter and a voltmeter and take current and voltage readings as directed by the Engineer.


ELECTRICAL DEMOLITION 260200 - 1

SECTION 260200 - ELECTRICAL DEMOLITION PART 1 - GENERAL 1.1 SCOPE

A. The extent of the electrical demolition work is indicated on the demolition drawings and herein.

B. Partial and total demolition of portions of the electrical system shall be performed along with all necessary modifications to that portion of the existing system, which shall remain so that it continues to function unaffected, by the demolition and associated new construction.

C. Coordinate all cutting and patching with the general contractor.

D. The drawings indicate the general areas of work involved. However, the Contractor shall perform work

outside those areas shown as is necessary to comply with the intent of this Section. E. The contractor shall familiarize himself with the existing building and with the work of all other trades

and include all work necessary to comply with the intent of the demolition.

F. It shall be understood that field conditions may be encountered during the execution of this contract, which will require extension or relocation of existing systems or equipment which are not specifically shown on the drawings, but which are required to meet the stated intent that the building continues to function unaffected by the demolition and associated new construction. This contract shall include such work as would normally be expected in an existing building of this age and type.

G. All products, building materials, and equipment on this project shall meet FTA “Buy America”


PART 2 - PRODUCTS 2.1 MATERIALS

A. The electrical contractor shall provide all tools, equipment, labor, etc., in order to accomplish the electrical demolition portion of the contract drawings.

PART 3 - EXECUTION 3.1 DEMOLITION

A. The Electrical Contractor shall include coordination with the General Contractor and such demolition of the existing electrical systems as is necessary so that the demolition work of the General Contractor shall not damage those portions of the electrical systems which are to remain in service, are to be reused or are to become the property of the Owner.

B. Turn over to the Owner, items shown as being removed and not reinstalled.

C. Equipment or materials, which are to be reused or turned over to the Owner, shall be carefully removed

and stored in a clean dry area. Should the Contractor encounter such equipment, which is not in satisfactory condition for reuse and not in working order, the Contractor shall notify the Architect/Engineer immediately. Any equipment or materials to be re-used, shall be cleaned prior to being re-installed.

ELECTRICAL DEMOLITION 260200 - 2

D. Disconnect electrical services to all equipment requiring removal. Conduit shall be removed to the point where it will be concealed at the completion of this contract. Wire and cable shall be removed back to the first outlet box, cabinet or termination point which is to remain.

3.2 ADDITIONAL WORK

A. Where new ceilings conflict with existing electrical work, which is to remain, relocate the electrical work involved to clear the new construction.

B. Where new wall or floor finishes conflict with existing electrical work which is to remain, relocate the

electrical work involved or provide box extensions or similar devices and reinstall on the new finish.

C. Where existing branch circuits and systems are interrupted by demolition, new work or new mechanical ductwork, extend and reconnect those circuits and systems. Where those circuits or systems must remain in service during the execution of this contract, provide temporary connections until final connections are complete.

D. In areas where ceilings are to be removed and reinstalled, remove and reinstall all electrical devices

which are to remain in or on the ceiling. END OF SECTION 260200

CONDUCTORS 260519 - 1

SECTION 260519 - CONDUCTORS PART 1 - GENERAL 1.1 SCOPE

A. Furnish and install a complete system of wiring and cable as shown, specified and required.



A. Conductors shall be as manufactured by Pirrelli, Colonial, Triangle, Southwire or approved equivalent.

B. Normal trade standard “Building Wire” shall be copper, type THHN/THWN, or XHHW, unless The National Electrical Code requires a different type. Aluminum conductors shall not be used. All wire to be used shall be new and manufactured within the last 6 months.

C. Conductors #10 AWG and smaller shall be solid. #8 AWG and larger shall be stranded.

D. Each conductor shall bear easily readable markings along entire length, indicating size and insulation

type. Dates of manufacturer shall be submitted to Architect/Engineer upon request.

E. Insulation on phase conductors #8 AWG and smaller shall be suitably colored in manufacturing.

F. Insulation on service and feeder conductors shall be 600 volt type THHN/THWN, unless code requires a different type.

G. Branch circuit conductors shall be minimum #12 AWG, with 600 volt type THHN/THWN or XHHW

insulation, unless The National Electrical Code requires a different type.

H. Conductors in any location subject to abnormal temperature shall be furnished with an insulation type suitable for temperature encountered.

I. Where no indication is made of wire size (including that noted in panel schedules), the conductor shall

be of N.E.C. size to match its over current protective device or equipment nameplate, whichever is larger, but in no case smaller than #12 AWG unless specifically called for.

J. Control and signal conductors shall be type and size indicated in those sections of the specifications.

PART 3 - EXECUTION 3.1 INSTALLATION

A. Joints in conductors #10 AWG and smaller shall be made with approved twist-on type connectors and manufactured by T & B, Ideal, or approved equivalent.

B. Joints in conductors #8 AWG and larger shall be made with mechanical pressure type connectors or

lugs.


C. Circuit joints may not be made up on terminal screws of wiring devices. Make circuit joints as above, and connect single leads to device terminals.

D. Conductors shall be labeled within all junction boxes, etc., using plastic “punch” tape, identifying the

conductors according to circuit numbers. E. Where connected under screw or bolt heads, stranded wire shall be fitted with a lug of proper size.

Make solid conductor loops clockwise so as to be forced closed as screw is tightened. Only one solid wire loop may be held with a single screw.

F. Make all connections tight. Torque-tighten all connections to lugs per manufacturer’s and UL

requirements.

G. Wires within panelboards, terminal cabinets, and similar equipment shall be neatly squared, “bunched” together and loosely held so with plastic ties at several places.

H. Where paralleling of conductors is shown for feeders or service entrance, it is absolutely required they

be exactly the same length between points of bonding together.

3.2 COLOR CODING

A. All wiring shall be color coded.

B. On 120/208v, 3 Phase, 4 Wire power system, conductors shall be color coded black (Phase A), red (Phase B), blue (Phase C) and white (Neutral). On 277/480V, 3 Phase, 4 Wire Systems, conductors shall be color coded brown (Phase A), orange (Phase B), yellow (Phase C), and light gray (Neutral).

C. Ground conductors on all systems shall be green. Isolated grounds shall be color coded green with

yellow stripe.

D. Phase conductors #8 AWG and larger may be identified with two or more bands of proper color plastic tape applied near each termination. Painting of wire will not be acceptable.

E. Neutral conductors #6 AWG and smaller shall have white or light gray insulation along entire length of

conductor. Neutral conductors larger than #6 AWG may be identified with two or more bands of proper color plastic tape applied near each termination. Painting of wire will not be acceptable.

F. Unless noted otherwise, or another arrangement is approved by the Engineer, busses in panels and

switch gear shall be considered “A”, “B”, and “C” from left to right, top to bottom or front to back when facing equipment.

G. Control and signal wiring shall not use the above named colors except green for grounding. Any other

colors or striping may be used but the coding shall provide same color or striping between any two terminals being jointed.

H. “Travelers” in switching circuits shall be of same color as phase conductors serving the circuits.

3.3 WIRING METHOD FOR BRANCH CIRCUITS

A. Circuits shall be connected to panels as shown in the panel schedules.

B. Under the above requirements and with required color coding system, no feeder or branch circuit raceway will contain more than one wire of the same color, except for switch legs and control circuits.


C. Conductors feeding lighting outlets shall not be combined in the same raceway with conduit feeding convenience receptacles. Lighting outlets and convenience receptacles shall not be put on the same circuit unless specifically indicated.


GROUNDING AND BONDING 260526 - 1

SECTION 260526 - GROUNDING AND BONDING PART 1- GENERAL 1.1 SCOPE

A. Grounding and bonding of the electrical system shall be provided in accordance with requirements of the National Electrical Code (NEC) and the requirements of these specifications and the drawings.

B. The contractor shall note that not all required grounding conductors are specifically noted on the

drawings or in the schedules or specifications. C. All products, building materials, and equipment on this project shall meet FTA “Buy America”


PART 2 - PRODUCTS 2.1 GROUNDING CLAMPS, BUSHINGS, ETC.

A. Materials shall be as manufactured by T & B, Harger, Alltec Corporation, or approved equivalent.

B. Clamps for attachment of grounding conductors to water pipes, etc., shall be of bronze or brass, with conduit hub with insulated bonding bushings and compression type LUGS.

2.2 GROUNDING CONDUCTORS

A. Grounding conductors shall be sized in accordance with the requirements of the NEC, or as noted on the drawings or specified herein.

B. Grounding conductors shall be of copper. Insulation as required by NEC or as noted or specified.

Otherwise, bare conductors will be acceptable. C. All power circuits shall contain green, insulated, grounding conductor sized per N.E.C.

2.3 MADE ELECTRODES

A. Provide “made” grounding electrodes in accordance with NEC Article 250.III and as detailed on the drawings.

B. Driven grounding electrodes shall consist of copper clad steel rods not less than 10 feet in length and

3/4 inch in diameter. PART 3 - EXECUTION 3.1 GENERAL INSTALLATION

A. All systems and equipment shall be grounded in accordance with NEC Article 250.

B. All grounding conductors shall be contained within raceway, unless specifically noted otherwise. 3.2 SERVICE GROUNDING

A. Where available on the premises, bond together all of the following. As a minimum, bond three (3) of the below together: 1. Metal water pipe.

GROUNDING AND BONDING 260526 - 2

2. Supplemental grounding electrode 3. Building metal frame. 4. Concrete-encased electrode.

B. Where required by NEC Article 250, and as shown on drawings, provide “made” grounding electrodes

to supplement the above. Bond together all available and made electrodes.

C. Service ground clamps shall be attached to cold water main at an accessible point and before its size is reduced. Clamp shall be accessible after construction is complete. Grounding conductors shall be without splice into the service enclosure where it shall be connected to main service ground buss, and interconnected with system neutral.

3.3 EQUIPMENT GROUNDING, ETC.

A. Ground all fixed and portable appliances and equipment connected under this contract with a green grounding conductor. This wire shall be carried inside the raceway and flex from equipment to ground

bus in distribution/branch circuit panelboard. Connect at both ends with suitable lugs.

B. Each grounding type receptacle shall be grounded. Grounding may be through the grounding yoke.

C. Any feeder raceway anywhere in the system which enters a box or cabinet through part of a concentric knockout shall be fitted with a bonding bushing and jumper. The jumper shall be sized by NEC Table 250.66 and be lugged to the box.

D. Isolated ground wires shall be installed in accordance with NEC Article 250-146 Item No. d. 3.4 TRANSFORMER SECONDARY GROUNDING

A. Equipment on the secondary side of transformers shall be considered “service” and be bonded and separately grounded directly to the main service ground bus or electrode. Grounding conductor may be run in feeder raceways back to main service enclosure.

B. In addition, transformer secondaries shall be provided with a local grounding electrode consisting of a

clamp on a local 3/4” (minimum) copper cold water pipe or a grounded steel structural member. Grounding conductor shall be sized as shown on plans.

C. All grounding system tests shall be fully documented as to time of day, weather condition, ground

moisture, “megger” readings, etc.. Submit report in writing to the Engineer/Architect. END OF SECTION 260526

ELECTRICAL SUPPORTS AND SEISMIC RESTRAINTS 260528 - 1

SECTION 260528 – ELECTRICAL SUPPORTS AND SEISMIC RESTRAINTS PART 1 - GENERAL 1.1 RELATED DOCUMENTS

A. Drawings & general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification sections, apply to this Section.

1.2 SUMMARY

A. All products, building materials, and equipment on this project shall meet FTA “Buy America” requirements. Each shop drawing submittal shall be accompanied with a letter of certification from the manufacturer regardless of whether or not the item was specified.

B. This Section includes:

1. Hangers & supports for electrical systems and equipment. 2. Seismic restraints for electrical systems and equipment. 3. Construction requirements for concrete bases.

1.3 DEFINITIONS

A. EMT – Electrical Metallic Tubing B. IBC – International Building Code C. IMC – Intermediate Metal Conduit D. NBC – National Building Code E. OSHPD – Office of Statewide Health Planning and Development F. RMC – Rigid Metal Construction G. SBC – Standard Building Code H. UBC – Uniform Building Code I. Seismic Restraint – A structural support element such as a metal framing member, a cable, an anchor

bold or stud, a fastening device, or an assembly of these items used to transmit seismic forces from an item of equipment or system to building structure and to limit movement including lateral movement of item during a seismic event.

1.4 SUBMITTALS

A. Product Data – Illustrate & indicate style, material, strength, fastening provisions and finish for each type and size of electrical support & seismic restraint component used. 1. Tabulate types & sizes of seismic restraints, complete with report numbers and rated strength in

tension and shear as evaluated by an agency acceptable to authorities having jurisdiction. 2. Annotate to indicate application of each product submitted & compliance with requirements.

B. Shop Drawings – Indicate materials and dimensions & identify hardware, including attachment and

anchorage devices, signed & sealed by a qualified Professional Engineer. Professional Engineer qualification requirements are specified in Division 1 section “Quality Requirements”. Include the following: 1. Fabricated Supports – Representatives of field fabricated supports not detailed on Drawings.


2. Seismic Restraints – Detail anchorage and bracing not defined by details or charts on Drawings. Include the following: a. Design Analysis – To support selection & arrangement of seismic restraints. Include

calculations of combined tensile & shear loads. b. Details – Detail fabrication & arrangement. Detail attachments of restraints to be restrained

items & to the structure. Show attachment locations, methods and spacings. Identify components, list the strengths and indicate direction & values of forces transmitted the structure during seismic events.

c. Pre-approval and Evaluation Documentation – By an agency acceptable to authorities having jurisdiction, showing maximum ratings of restraint items and the basis for approval (tests or calculations).

C. Coordination Drawings – Show coordination of seismic bracing for electrical components with other

systems & equipment in the vicinity, including other supports and seismic restraints. D. Welding Certifications E. Qualification Data – For Professional Engineer and testing agency.


A. Comply with seismic restraint requirements in the IBC unless requirements in this Section are more stringent.

B. Testing of Seismic Anchorage Devices – Comply with testing requirements of Part 3, this

Specification. C. Welding – Qualify procedures and personal according to AWS D1.1/D1.1M “Structural Welding Code

– Steel”.

1.6 PROJECT CONDITIONS:

A. Site Class as Defined by the Architect. Refer to Architectural Documents for classification. PART 2 - PRODUCTS 2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection: 1. Available Manufacturers – Subject to compliance with requirements, manufacturers offering

products that may be incorporated into the Work include, but are not limited to, manufacturers specifications.

2. Manufacturers – Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 SUPPORT, ANCHORAGE AND ATTACHMENT COMPONENTS

A. Rated Strength – Adequate in tension, shear and pullout force to resist maximum loads calculated or imposed under this Project, with a minimum structural safety factor of five (5) times the applied force.

B. Steel Slotted Support Systems – Comply with MFMA-3, factory fabricated components for field

assembly. 1. Manufacturers.

a. Cooper B-Line, a division of Cooper Industries. b. ERICO International Corporation. c. Allied Support Systems; Power-Strut Unit


d. GS Metals Corp. e. Michigan hanger Col, Inc.; O-Strut Division f. National Pipe Hanger Corp. g. Thomas & Betts Corporation h. Unistrut; Tyco International, LTD i. Wesanco, Inc.

2. Finishes: a. Metallic Coatings – Hot dip galvanized after fabrication & applied according to MFMA-3. b. Nonmetallic Coatings – Manufacturer’s standard PVC, polyurethane or polyester coating

applied according to MFMA-3. c. Painted Coatings – Manufacturer’s standard painted coating applied according to MFMA-3.

3. Channel Dimensions – Selected for structural loading & applicable seismic forces.

C. Nonmetallic Slotted Support Systems – Structural grade, factory formed, glass fiber resin channels and angles with 9/16 inch diameter holes (14mm) at a maximum of 8-inches o.c. (200mm) in at least one (1) surface. 1. Manufacturers.

a. Allied Support Systems; Aickinstrut Unit b. Cooper B-Line, a division of Cooper Industries c. Fabco Plastics Wholesale Limited d. Seasafe, Inc.

2. Fittings & Accessories – Products of channel & angle manufacturer and designed for use with those items.

3. Fitting & Accessory Materials – Same as channels & angles, except metal items may be stainless steel.

4. Rated Strength – Selected to suit structural loading & applicable seismic forces. D. Raceway and Cable Supports – As described in NECA 1. E. Conduit and Cable Support Devices – Steel hangers, clamps and associated fittings, designed for types

& sizes of raceway or cable to be supported. F. Support for Conductors in Vertical Conduit – Factory fabricated assembly consisting of threaded body

& insulating wedging plug or plugs for non-armored electrical conductors or cables in riser conduits. Plugs shall have number, size & shape of conductor gripping pieces are required to suit individual conductors or cables supported. Body shall be malleable iron.

G. Structural Steel for Fabricated Supports and Restraints – ASTM A 36/A 36M, steel plates, shapes and

bars; black and galvanized. H. Mounting, Anchoring and Attachment Components – Items for fastening electrical items or their

supports to building surfaces include the following: 1. Powder Actuated Fasteners – Threaded steel stud, for sue in hardened Portland cement concrete,

steel or wood with tension, shear & pullout capacities appropriate for supported loads & building materials where used. a. Manufacturers:

1. Hilti, Inc. 2. ITW Construction Products 3. MKT Fastening, LLC 4. Simpson Strong-Tie Co., Inc.

2. Mechanical – Expansion Anchors – insert wedge type, stainless steel, for use in hardened Portland cement concrete with tension, shear and pull out capacities appropriate for supported loads & building materials in which used.

a. Manufacturers: 1. Cooper B-Line, a division of Cooper Industries. 2. Empire Tool and Manufacturing Co., Inc. 3. Hilti, Inc.


4. ITW Construction Products 5. MKT Fastening, LLC 6. Powers Fasteners

3. Concrete Inserts – Steel or malleable iron slotted support system units similar to MSS Type 18; complying with MFMA-3 or MSS SP-58.

4. Clamps for Attachment to Steel Structural Elements – MSS SP-58, type suitable for attached structural element.

5. Through Bolts – Structural type, hex head, high strength. Comply with ASTM A 325. 6. Toggle Bolts – All steel springhead type 7. Hanger Rods – Threaded steel

2.3 SEISMIC RESTRAINT COMPONENTS

A. Rated Strength, Features and Applicable Requirements for Restraint Components – As defined in reports by an agency acceptable to authorities having jurisdiction. 1. Structural Safety factor – Strength in tension, shear and pullout force of components used shall be

at least five (5) times the maximum seismic forces to which they will be subjected. B. Angle and Channel-Type Brace Assemblies – Steel angles or steel slotted support system components;

with accessories for attachment to braced component at one end & to building structure at the other end.

C. Cable Restraints – ASTM A 603, zinc coated, steel wire rope attached to steel or stainless steel

thimbles, brackets, swivels and bolts design for restraining cable service 1. Manufacturers:

a. Amber/Booth Company, Inc. b. Loos & Co., Inc. c. Mason Industries, Inc.

2. Seismic Mountings, Anchors & Attachments – Devices as specified in Part 2 “Support, Anchorage and Attachment Components” article, selected to resist seismic forces.

3. Hanger Rod Stiffener – Reinforcing steel angle clamped to hanger rod, of design recognized by an agency acceptable to authorities having jurisdiction.

4. Busings for Floor Mounted Equipment Anchors – Neoprene units designed for seismically rated rigid equipment mountings and matched to type & size of anchor bolts and studs used.

5. Bushing Assemblies for Wall mounted Equipment Anchors – Assemblies of neoprene elements & steel sleeves designed for seismically rated rigid equipment mountings, and matched to type & size of attachment devices use.

2.4 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description – Welded or bolted, structural steel shapes, shop or field fabricated to fit dimensions of supported equipment.

B. Materials – Comply with requirements in Division 5, Section “Metal Fabrications” for steel shapes &

plates. PART 3 - EXECUTION 3.1 APPLICATION

A. Comply with NECA 1 for application of hangers & supports for electrical equipment and systems, except if requirements in this Section are stricter.

B. Maximum support spacing and Minimum Hanger Rod Size for Raceway – Space supports for EMT,

IMC and RMC as required by NFPA 70. Minimum rod size shall be ¼ inch in diameter (6mm).


C. Multiple Raceways or Cables – Install trapeze type supports fabricated with steel slotted support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits. 1. Secure raceways & cables to trapeze member with clamps approved for application by an agency

acceptable to authorities having jurisdiction. 2. Secure raceways & cables to these supports with 2-bolt conduit clamps or single-bolt conduit

clamps using spring friction action for retention in support channel. D. Spring steel clamps designed for supporting single conduits without bolts may be used for 1-1/2 inch

(38mm) or smaller raceways serving branch circuits & communication systems above suspended ceiling and for fastening raceways to trapeze supports.

3.2 SUPPORT AND SEISMIC RESTRAINT INSTALLATION

A. Comply with NECA 1 for installation requirements, except as specified in this Article. B. Raceway Support Methods – In addition to methods described in NECA 1, EMT, IMC, and RMC may

be supported by openings through structural members, as permitted in NFPA 70. C. Install seismic restraint components using methods approved by the evaluation service providing

required submittals for component. D. Strength of Support and Seismic Restraint Assemblies – Where not indicated, select sizes of

components so strength will be adequate to carry present & future static and seismic loads within specified loading limits. Minimum static design load used for strength determination shall be weigh to supported components plus 200 lbs (90kg).

E. Mounting and Anchorage of Surface Mounted Equipment and Components – Anchor and fasten

electrical items & their supports to building structural elements by the following methods unless otherwise indicated by code: 1. To Wood – Fasten with lag screws or through bolt holds. 2. To New Concrete – Bolt to concrete inserts. 3. To masonry – Approved toggle type bolts on hollow masonry units & expansion anchor fasteners

on solid masonry units. 4. To Existing Concrete – Expansion anchor fasteners. 5. Instead of expansion anchors, powder actuated driven threaded studs provided with lock washers

& nuts may be used in existing standard weight concrete 4-inches thick or greater. Do no use for anchorage to lightweight aggregate concrete or for slabs less than 4 inches thick.

6. To Steel – Welded threaded studs complying with AWS D1.1/D1.1 M with lock washers & nuts. 7. To Light Steel – Sheet metal screws. 8. Items mounted on Hollow Walls and Nonstructural Building Surfaces – Mount cabinets, panel

boards, disconnect switches, control enclosures, pull & junction boxes, transformers, and other devices on slotted channel racks attached to substrate by means that meet seismic restraint strength and anchorage requirements.

F. Drill holes for expansion anchors in concrete at locations & to depths that avoid reinforcing bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Division 5 Section “Metal Fabrications” for site fabricated metal supports.

B. Cut, fit and place miscellaneous metal supports accurately in location, alignment and elevation to

support & anchor electrical materials and equipment. C. Field welding – Comply with AWS D1.1 / D1.1M


3.4 CONCRETE BASES:

A. Concrete Bases – Anchor equipment to concrete base(s) according to equipment manufacturer’s written instruction & seismic criteria at Project.

B. Construct concrete bases of dimensions indicated, but not less than, 4 inches (100mm) larger in both

directions than supported unit, and so expansion anchors will be a minimum of 10 bold diameters from edge of the base. 1. Install dowel rods to connect concrete base to concrete floor. Unless otherwise indicated, install

dowel rods on 18-inch (450mm) centers around full perimeter of base. 2. Install epoxy coated anchor bolts for supported equipment that extend through concrete base, and

anchor into structural concrete floor. 3. Place and secure anchorage devices. Use supported equipment manufacturer’s setting drawings,

templates, diagrams, instructions and directions furnished with items to be embedded. 4. Install anchor bolts to elevations required for proper attachment to support equipment. 5. Install anchor bolts according to anchor bold manufacturer’s written instructions. 6. Use 3000 psi, 28-day compressive strength concrete. Concrete materials, reinforcements and

placement requirements are specified in Division 3 Section “Cast-in Place Concrete”. 3.5 INSTALLATION OF SEISMIC RESTRAINT COMPONENTS

A. Install bushing assemblies for anchor bolts for floor mounted equipment, arranged to provide resilient media between anchor bolt and mounting hole in concrete base.

B. Install bushing assemblies for mounting bolts for wall mounted equipment, arranged to provide resilient

media where equipment or equipment mounting channels are attached to wall. C. Restrain Cables – Provide slack within maximum recommended by manufacturer. D. Attachment to Structure – If specific attachment is not indicated, anchor bracing to structure at flanges

of beams, upper truss chords of bar joists or at concrete members. 3.6 ACCOMMODATION OF DIFFERENTIAL SEISMIC MOTION

A. Make flexible connections in runs of raceways, cables, wireways, cable trays and busways where they cross expansion and seismic control joints, where adjacent sections or branches are supported by different structural elements, and where they terminate with connection to electrical equipment that is anchored to a different structural element from the one supporting them as they approach equipment.


A. Testing Agency – Engage a qualified independent testing & inspecting agency to perform field tests and inspections, and prepare test reports.

B. Testing – Test pullout resistance of seismic anchorage devices.

1. Provide evidence of recent calibration of test equipment by a testing agency acceptable to authorities of jurisdiction.

2. Schedule test with Owner, through Architect, before connecting anchorage device to restrained component (unless post-connection testing has been approved). And with at least seven (7) days advanced notice.

3. Obtain Architect’s approval before transmitting test loads to structure. Provide temporary load spreading members.

4. Test at least four (4) of each type & size of installed anchors and fasteners selected by the Architect.

5. Test to 90 percent of rated proof load of device. 6. If a device fails test, modify all installations of that same type and retest until satisfactory results

are achieved.


C. Record test results.


FASTENINGS AND SUPPORTS 260529 - 1

SECTION 260529 - FASTENINGS AND SUPPORTS PART 1 - GENERAL 1.1 SCOPE

A. Full and proper support shall be provided for all items for electrical equipment, raceways, etc.



A. Materials used shall be good quality, made of steel or of other non-corroding material.

B. Insert in masonry shall be lead, plastic, or fiber type, installed in drilled holes. Lead only shall be used for exterior locations or for interior locations subject to moisture.


A. All equipment and flat raceways attached to outside walls or interior walls subject to permanent moisture shall be shimmed out with non-corrodible material so as to provide 1/4” air space between wall and equipment or raceway.

B. All materials, whether exposed or concealed, shall be firmly and adequately held in place. Fastening

and support shall afford safety factor of three or higher.

C. All fixtures, raceways and equipment shall be supported from the structure. Nothing may be supported on suspended ceilings unless definitely noted so on the drawings or specifically permitted by the Architect/Engineer.

D. Fixtures shall be supported with # 9 gauge steel wire, or with threaded steel rods, adjusted as necessary

to level fixture. For fluorescent fixtures 18” wide or less, use minimum of two supports; for wider units, use four supports - one for each corner.

E. Where installed recessed in grid type ceilings, attach each fluorescent fixture to grid with minimum of

two “earthquake clips” or other approved method. This requirement is in addition to “D” above. NO EXCEPTIONS:


RACEWAYS AND FITTINGS 260533 - 1

SECTION 260533 - RACEWAYS AND FITTINGS PART 1 - GENERAL 1.1 SCOPE

A. Provide a complete system of raceways for the installation of wiring as indicated on the drawings, as herein specified and as required by applicable codes.

B. All wiring shall be installed in raceways unless specifically noted otherwise.

C. All work includes furnishing and installing fire and smoke barrier penetration seals for openings in

floors, walls and other elements of construction.

D. All products, building materials, and equipment on this project shall meet FTA “Buy America” requirements. Each shop drawing submittal shall be accompanied with a letter of certification from the manufacturer regardless of whether or not the item was specified.

PART 2 - PRODUCTS 2.1 MANUFACTURERS

A. Metal raceway system components shall be as manufactured by G.E., Kaiser, Republic, T & B or other approved manufacturers.

B. Non-metallic raceway system components shall be as manufactured by Carlon, Queen City Plastics,

Georgia Pipe, or Southern Pipe.

2.2 CONDUITS

A. Raceways shall be of metal except as specifically noted or where non-metallic raceway is permitted by these specifications. Grounding conductors shall be provided in all conduits supporting power circuits.

B. Use heavy wall rigid metal conduit (RMC) for any metal conduit run underground, poured in concrete,

or exposed in exterior locations.

C. Use electrical metallic tubing (EMT) for most other general applications.

D. Use flexible conduit for appropriate applications. Use galvanized type for dry locations and liquid-tight type for wet locations or as noted. Flexible conduit shall be minimum 1/2” diameter. Liquid-tight flexible metal conduit shall be used for final connection to all motors, transformers and other rotating or vibrating equipment. Flexible metal conduit shall be used for final connection to fluorescent lighting fixtures mounted in or on suspended ceilings and similar applications.

E. Non-metallic raceway shall be minimum Schedule 40 PVC. In general, non-metallic raceway will be

permitted for use underground or in poured concrete (including panel feeders, branch circuits, etc.), provided all 90 degree Ells, and Ells up out of the floor slab are heavy wall rigid metal conduit. Non-metallic raceways will not be permitted for any exposed work or for raceways in ceiling spaces or for raceway in stud walls.

F. No raceway may be exposed in any finished space unless specifically so approved, in written form,

prior to rough-in.

G. Any raceways required to be exposed in finished spaces shall be of an appropriate two-piece, metallic type surface raceway with outlet and cross-sectional design as shown on drawings.


H. Minimum metal conduit size shall be 3/4”. I. Any underground steel conduit shall be coated with two (2) coats of asphaltum.

2.3 COUPLINGS, CONNECTIONS, ETC.

A. EMT couplings and connectors shall be compression gland type of steel. Connectors shall be insulated throat type. Set screw type or indenter type are not permitted.

B. Flexible conduit connectors shall be T & B “Tite-Bite” type or approved equivalent by Raco, Steel City

or Appleton, with insulated throats and “Anti-short” bushings.

C. “Split” or “Erickson” couplings shall be manufactured by O.Z. Gedney or approved equivalent by Raco, Steel City or Appleton.

D. Expansion couplings shall be manufactured by O.Z. Gedney or approved equivalent by Raco, Steel

City or Appleton.

E. Conduit shall be securely fastened to all sheet metal enclosures with double galvanized locknuts and insulated bushing, care being taken to see that the full number of threads project through to permit the bushings to be drawn tight against the end of conduit, after which the locknuts shall be made sufficiently tight to insure positive ground continuity between conduit and box.

2.4 PENETRATION SEALS

A. Performance: Materials shall have been tested to provide fire rating equal to that of the construction in which materials will be installed.

B. Deliver materials undamaged in manufacturer’s clearly labeled, unopened containers, identified with

brand, type, grade and UL label, where applicable.

C. Subject to compliance with requirement, provide products of one of the following manufacturers as further defined in the Systems and Application Schedule in Part 2.5 of this section.

D. Provide materials classified by UL to provide fire stopping equivalent to time rating of construction

being penetrated.

E. Provide asbestos free materials that comply with applicable codes and have been tested under positive pressure in accordance with UL 1479 or ASTM E 814.

2.5 PENETRATION SYSTEMS AND APPLICATION SCHEDULE

A. All holes or voids created to extend electrical systems through fire rated floors and walls shall be sealed by the electrical contractor with an intumescent material capable of expanding up to 10 times when exposed to temperatures beginning at 250 degrees F. It shall be UL Classified and have I.C.B.O., B.O.C.A.I. and S.B.C.C.I. (NEAR 243) approved rating to 4 hours per ASTM E-814 (UL 1479).

B. Acceptable Material: 3M Fire Barrier Caulk, Wrap/Strip, Moldable Putty, and Sheet forms. Approved

equivalent materials by Hilti or Tremco, Inc. are also acceptable. C. U.L. Schedule

CONSTRUCTION UL DESIGNATION


1. Metal pipe and conduit through round opening .................................................... 49,95,138,202,319,321 2. Insulated metal pipe through round opening ........................................................................... 91,152,203 3. Metal pipe or conduits through large opening ..................................... 49,63,93,94,137,233,234,319,321 4. Busway through rectangular opening ............................................................................................... 97,99 5. Cables through opening ............................................................................................... 33,65,140,201,320 6. Cable tray ................................................................................................................................ 66,105,139 7. Glass pipe through opening ............................................................................................................ 90,212 8. Blank opening .................................61,62,92,102,104,136,318,318,J900B,J900C,U900C,U900J,J900L 9. Non-metallic (plastic) pipe or conduit through opening ........................................................................ 64 10. Metal pipe or conduit through gypsum board wall ....................................................................... 147,322 11. Non-metallic (plastic) pipe or conduit through gypsum board wall .................................................... 148 12. Cables through gypsum board wall ...................................................................................................... 149 13. Insulated metal pipe through gypsum board wall ................................................................................ 147 14. Glass pipe through gypsum board wall ......................................................................................... 152,211 15. Metal pipe on conduit through wood construction ....................................................................... 159,169 16. Non-metallic (plastic) pipe or conduit through wood construction .............................................. 160,167 17. Cables through wood construction ...................................................................................................... 168


A. Heavy wall and intermediate metal conduit shall be made up with full threads to which a conductive pipe compound (T & B Kopr-Shield or equivalent) has been applied and butted in couplings.

B. Underground runs shall have minimum of 24” cover, filled and tamped in 6” layers. An 8” wide,

yellow warning tape reading “Danger Electrical Conduits” shall be provided for each underground conduit run and shall be buried a maximum of 12” below finished grade entire length of conduit run.

C. Support conduits with approved straps or hangers within one foot of each termination and as required

by the National Electrical Code. Where trapeze hangers are used, provide threaded rod, strut and strut straps as required.

D. All raceways shall be concealed unless specifically shown or approved otherwise.

E. Make all cuts square. Remove any burrs by reaming.

F. EMT shall be attached to boxes or enclosures with approved couplings only.

G. RMC and IMC shall be attached to boxes or enclosures with double locknuts (one inside and one

outside) and insulating bushing.

H. All raceways, both exposed and concealed, shall be run at right angles, either parallel or perpendicular to building lines.

I. Install penetration seal materials in accordance with printed instructions of the UL fire Resistance

Directory and in accordance with manufacturer’s instruction.

J. Seal holes or voids made by penetrations to ensure an effective smoke barrier.

K. Where floor openings without penetrating items are more than four inches in width and subject to traffic or loading, install fire stopping materials capable of supporting same loading as floor.

L. Keep areas of work accessible until inspection by applicable code authorities.


3.2 SLEEVES AND PENETRATIONS

A. Electrical Contractor shall provide sleeves and openings for raceways penetrating exterior wall, interior walls and partitions, floors and roofs. Provisions for all such penetrations shall be as approved by the Architect/Engineer.

B. For any raceway passing through an exterior wall, above or below grade, provide appropriate sleeve

and water proofing. Fill space between conduit and sleeve with appropriate compound (e.g. lead and oakum) and then apply caulking compound - Thiocaulk or approved equivalent - flush with finished surfaces.

C. For raceways penetrating interior walls or partitions (except as in Item D. below, provide steel pipe or

galvanized sheet metal sleeves.

D. For raceways penetrating floor slabs, smoke partitions, and other fire-rated walls, provide steel pipe sleeves and seal with high temperature non-shrink grout or other material as approved by the Architect/Engineer. Sealing compound used shall provide same fire rating as barrier being penetrated. (See schedule in Section 2.5).

E. Conduits penetrating roof surfaces for purpose of connecting to mechanical equipment (e.g. rooftop

HVAC units, exhaust fans, etc.) shall utilize opening, curbs, etc., provided for the equipment where possible.

F. For raceway penetrations through roof (except as described in item E. above), contractor shall provide

appropriate prefabricated roof curb assembly - “Pipe Portal System” as manufactured by Roof Products & Systems Corp., Addison, Illinois, or equivalent method as approved by Architect/Engineer and roofing Subcontractor.

G. Provide suitable UL listed and approved conduit seals on all runs of conduit leaving or passing through

refrigerated spaces. (See Schedule in Section 2.5).

H. After service entrance conduits have been installed, wire pulled, “meggered” and accepted, seal using UL listed and approved duct seal.



SECTION 260533 - RACEWAYS AND FITTINGS PART 1 - GENERAL 1.1 SCOPE

A. Provide a complete system of raceways for the installation of wiring as indicated on the drawings, as herein specified and as required by applicable codes.

B. All wiring shall be installed in raceways unless specifically noted otherwise.

C. All work includes furnishing and installing fire and smoke barrier penetration seals for openings in

floors, walls and other elements of construction.

D. All products, building materials, and equipment on this project shall meet FTA “Buy America” requirements. Each shop drawing submittal shall be accompanied with a letter of certification from the manufacturer regardless of whether or not the item was specified.

PART 2 - PRODUCTS 2.1 MANUFACTURERS

A. Metal raceway system components shall be as manufactured by G.E., Kaiser, Republic, T & B or other approved manufacturers.

B. Non-metallic raceway system components shall be as manufactured by Carlon, Queen City Plastics,

Georgia Pipe, or Southern Pipe.

2.2 CONDUITS

A. Raceways shall be of metal except as specifically noted or where non-metallic raceway is permitted by these specifications. Grounding conductors shall be provided in all conduits supporting power circuits.

B. Use heavy wall rigid metal conduit (RMC) for any metal conduit run underground, poured in concrete,

or exposed in exterior locations.

C. Use electrical metallic tubing (EMT) for most other general applications.

D. Use flexible conduit for appropriate applications. Use galvanized type for dry locations and liquid-tight type for wet locations or as noted. Flexible conduit shall be minimum 1/2” diameter. Liquid-tight flexible metal conduit shall be used for final connection to all motors, transformers and other rotating or vibrating equipment. Flexible metal conduit shall be used for final connection to fluorescent lighting fixtures mounted in or on suspended ceilings and similar applications.

E. Non-metallic raceway shall be minimum Schedule 40 PVC. In general, non-metallic raceway will be

permitted for use underground or in poured concrete (including panel feeders, branch circuits, etc.), provided all 90 degree Ells, and Ells up out of the floor slab are heavy wall rigid metal conduit. Non-metallic raceways will not be permitted for any exposed work or for raceways in ceiling spaces or for raceway in stud walls.

F. No raceway may be exposed in any finished space unless specifically so approved, in written form,

prior to rough-in.

G. Any raceways required to be exposed in finished spaces shall be of an appropriate two-piece, metallic type surface raceway with outlet and cross-sectional design as shown on drawings.


H. Minimum metal conduit size shall be 3/4”. I. Any underground steel conduit shall be coated with two (2) coats of asphaltum.

2.3 COUPLINGS, CONNECTIONS, ETC.

A. EMT couplings and connectors shall be compression gland type of steel. Connectors shall be insulated throat type. Set screw type or indenter type are not permitted.

B. Flexible conduit connectors shall be T & B “Tite-Bite” type or approved equivalent by Raco, Steel City

or Appleton, with insulated throats and “Anti-short” bushings.

C. “Split” or “Erickson” couplings shall be manufactured by O.Z. Gedney or approved equivalent by Raco, Steel City or Appleton.

D. Expansion couplings shall be manufactured by O.Z. Gedney or approved equivalent by Raco, Steel

City or Appleton.

E. Conduit shall be securely fastened to all sheet metal enclosures with double galvanized locknuts and insulated bushing, care being taken to see that the full number of threads project through to permit the bushings to be drawn tight against the end of conduit, after which the locknuts shall be made sufficiently tight to insure positive ground continuity between conduit and box.

2.4 PENETRATION SEALS

A. Performance: Materials shall have been tested to provide fire rating equal to that of the construction in which materials will be installed.

B. Deliver materials undamaged in manufacturer’s clearly labeled, unopened containers, identified with

brand, type, grade and UL label, where applicable.

C. Subject to compliance with requirement, provide products of one of the following manufacturers as further defined in the Systems and Application Schedule in Part 2.5 of this section.

D. Provide materials classified by UL to provide fire stopping equivalent to time rating of construction

being penetrated.

E. Provide asbestos free materials that comply with applicable codes and have been tested under positive pressure in accordance with UL 1479 or ASTM E 814.

2.5 PENETRATION SYSTEMS AND APPLICATION SCHEDULE

A. All holes or voids created to extend electrical systems through fire rated floors and walls shall be sealed by the electrical contractor with an intumescent material capable of expanding up to 10 times when exposed to temperatures beginning at 250 degrees F. It shall be UL Classified and have I.C.B.O., B.O.C.A.I. and S.B.C.C.I. (NEAR 243) approved rating to 4 hours per ASTM E-814 (UL 1479).

B. Acceptable Material: 3M Fire Barrier Caulk, Wrap/Strip, Moldable Putty, and Sheet forms. Approved

equivalent materials by Hilti or Tremco, Inc. are also acceptable. C. U.L. Schedule

CONSTRUCTION UL DESIGNATION


1. Metal pipe and conduit through round opening .................................................... 49,95,138,202,319,321 2. Insulated metal pipe through round opening ........................................................................... 91,152,203 3. Metal pipe or conduits through large opening ..................................... 49,63,93,94,137,233,234,319,321 4. Busway through rectangular opening ............................................................................................... 97,99 5. Cables through opening ............................................................................................... 33,65,140,201,320 6. Cable tray ................................................................................................................................ 66,105,139 7. Glass pipe through opening ............................................................................................................ 90,212 8. Blank opening .................................61,62,92,102,104,136,318,318,J900B,J900C,U900C,U900J,J900L 9. Non-metallic (plastic) pipe or conduit through opening ........................................................................ 64 10. Metal pipe or conduit through gypsum board wall ....................................................................... 147,322 11. Non-metallic (plastic) pipe or conduit through gypsum board wall .................................................... 148 12. Cables through gypsum board wall ...................................................................................................... 149 13. Insulated metal pipe through gypsum board wall ................................................................................ 147 14. Glass pipe through gypsum board wall ......................................................................................... 152,211 15. Metal pipe on conduit through wood construction ....................................................................... 159,169 16. Non-metallic (plastic) pipe or conduit through wood construction .............................................. 160,167 17. Cables through wood construction ...................................................................................................... 168


A. Heavy wall and intermediate metal conduit shall be made up with full threads to which a conductive pipe compound (T & B Kopr-Shield or equivalent) has been applied and butted in couplings.

B. Underground runs shall have minimum of 24” cover, filled and tamped in 6” layers. An 8” wide,

yellow warning tape reading “Danger Electrical Conduits” shall be provided for each underground conduit run and shall be buried a maximum of 12” below finished grade entire length of conduit run.

C. Support conduits with approved straps or hangers within one foot of each termination and as required

by the National Electrical Code. Where trapeze hangers are used, provide threaded rod, strut and strut straps as required.

D. All raceways shall be concealed unless specifically shown or approved otherwise.

E. Make all cuts square. Remove any burrs by reaming.

F. EMT shall be attached to boxes or enclosures with approved couplings only.

G. RMC and IMC shall be attached to boxes or enclosures with double locknuts (one inside and one

outside) and insulating bushing.

H. All raceways, both exposed and concealed, shall be run at right angles, either parallel or perpendicular to building lines.

I. Install penetration seal materials in accordance with printed instructions of the UL fire Resistance

Directory and in accordance with manufacturer’s instruction.

J. Seal holes or voids made by penetrations to ensure an effective smoke barrier.

K. Where floor openings without penetrating items are more than four inches in width and subject to traffic or loading, install fire stopping materials capable of supporting same loading as floor.

L. Keep areas of work accessible until inspection by applicable code authorities.


3.2 SLEEVES AND PENETRATIONS

A. Electrical Contractor shall provide sleeves and openings for raceways penetrating exterior wall, interior walls and partitions, floors and roofs. Provisions for all such penetrations shall be as approved by the Architect/Engineer.

B. For any raceway passing through an exterior wall, above or below grade, provide appropriate sleeve

and water proofing. Fill space between conduit and sleeve with appropriate compound (e.g. lead and oakum) and then apply caulking compound - Thiocaulk or approved equivalent - flush with finished surfaces.

C. For raceways penetrating interior walls or partitions (except as in Item D. below, provide steel pipe or

galvanized sheet metal sleeves.

D. For raceways penetrating floor slabs, smoke partitions, and other fire-rated walls, provide steel pipe sleeves and seal with high temperature non-shrink grout or other material as approved by the Architect/Engineer. Sealing compound used shall provide same fire rating as barrier being penetrated. (See schedule in Section 2.5).

E. Conduits penetrating roof surfaces for purpose of connecting to mechanical equipment (e.g. rooftop

HVAC units, exhaust fans, etc.) shall utilize opening, curbs, etc., provided for the equipment where possible.

F. For raceway penetrations through roof (except as described in item E. above), contractor shall provide

appropriate prefabricated roof curb assembly - “Pipe Portal System” as manufactured by Roof Products & Systems Corp., Addison, Illinois, or equivalent method as approved by Architect/Engineer and roofing Subcontractor.

G. Provide suitable UL listed and approved conduit seals on all runs of conduit leaving or passing through

refrigerated spaces. (See Schedule in Section 2.5).

H. After service entrance conduits have been installed, wire pulled, “meggered” and accepted, seal using UL listed and approved duct seal.


OUTLET AND JUNCTION BOXES 262727 - 1

SECTION 262727 - OUTLET AND JUNCTION BOXES PART 1 - GENERAL 1.1 SCOPE

A. Provide and install outlet boxes, junction boxes, pedestal boxes, etc., as required for installation of electrical work, as shown, specified and required.



A. Unless specifically noted or approved otherwise, boxes shall be of metal (steel or aluminum) as manufactured by Steel City, T & B, Raco, Appleton or approved equivalent.

B. Size all boxes in accordance with applicable NEC articles (e.g. 312, 314, 376, 378, etc.).

C. Device boxes shall be section type of 4” square, equipped with plaster rings as required to mount

devices.

D. Where appropriate, use masonry boxes as manufactured by Raco.

E. Provide pedestal type receptacle boxes for use on laboratory tables as detailed on drawings.

F. Provide power and communications floor boxes as shown on drawings. Boxes shall be flush mounted, gangs as indicated with cover plate and carpet flange as required. Boxes shall be fully adjustable, cast iron, corrosion resistant with threaded openings as required, cover plates shall be brass or polished die-cast aluminum.


A. Set all boxes with edges flush with finished surface.

B. Immediately after installation, cover raceways and boxes to prevent entrance of foreign matter, paint, etc.

C. Contractor shall coordinate with other trades, and shall study the Architectural and Laboratory Plan

Drawings, Casework Drawings, etc., to determine proper placement and mounting heights of all devices.

D. Where not shown or required otherwise, the following “standard” mounting heights and positions shall

apply: 1. Switch boxes 46” from finished floor to center. Boxes beside doors shall be mounted so edge of

trim plate is 2” from edge of door trim on strike side. 2. Telephone boxes 18” from finished floor to center and vertical. Boxes for wall phones shall be

62” from finished floor and vertical. 3. Panelboard enclosures 6’-4” maximum from finished floor to top circuit breaker. 4. Fire alarm pull stations 46” from finished floor to center.

OUTLET AND JUNCTION BOXES 262727 - 2

5. Fire alarm signal devices 80” to bottom of strobe device lens - or 6” below ceiling to top of strobe device lens, whichever is lower.

6. Receptacle boxes 18” from finished floor to center, mounted vertically. 7. When multiple switch/fire alarm pull stations are mounted side-by-side on same wall, all devices

shall be mounted at the same height (does not include receptacle/telephone).

E. Where receptacles, telephone outlets, etc., occur over counter tops, etc., install box so that device is centered 4” above counter or backsplash, or higher if required to coincide with blockwork coursing. Carefully coordinate so that trim plates are completely clear of backsplashes, etc.


EQUIPMENT CONNECTIONS 262728 - 1

SECTION 262728 - EQUIPMENT CONNECTIONS PART 1 - GENERAL 1.1 SCOPE

A. Electrical Contractor shall connect and/or provide final connections to all medical, laboratory, kitchen, plumbing and mechanical equipment.

B. Electrical Contractor shall coordinate all connections prior to rough-in using approved catalog cut

sheets and shop drawings. Any adjustments to feeder, breaker, fuse and/ or disconnect sizes, due to a lack of coordination, shall be done at the contractors expense.

C. All products, building materials, and equipment on this project shall meet FTA “Buy America”


1.2 ELECTRICAL/MECHANICAL COORDINATION

A. The Electrical Contractor shall provide and install all manual motor starter switches, disconnect switches, receptacles, etc., to mechanical/plumbing equipment and kitchen equipment as indicated on drawings.

B. Electrical Contractor shall provide final connections to all mechanical/plumbing equipment and kitchen

equipment as required.

C. All disconnect switches and fuse sizes shall be coordinated with shop drawings prior to installing. Any equipment installed incorrectly because of lack of coordination will be removed and installed correctly at Electrical Contractor’s expense.

D. Electrical Contractor shall install all starters provided by other trades.

PART 2 - PRODUCTS 2.1 GENERAL

A. Provide all required receptacles and disconnect switches for equipment as required. Refer to other Sections of the Electrical Specifications for types to be used.

B. Provide all cords, plugs and cables on equipment requiring such items.

PART 3 - EXECUTION 3.1 GENERAL

A. All connections shall be torque-tightened to manufacturers’ instructions and recommendations.

B. Utilize all approved wiring diagrams, if any, when making connections.

C. Installation of all equipment and connections shall comply with N.E.C. requirements & manufacturers’ recommendations.


DISCONNECTS (MOTORS AND CIRCUITS) 262816 - 1

SECTION 262816 - DISCONNECTS (MOTORS AND CIRCUITS) PART 1 - GENERAL 1.1 SCOPE

A. This section includes low voltage disconnect switches.


PART 2 - PRODUCTS 2.1 LOW VOLTAGE FUSIBLE SWITCHES RATED 600 AMPERES AND LESS

A. Quick-make, quick-break type in accordance with UL98, NEMA KS 1 and NEC. B. Shall be capable of accepting UL and NEMA standard fuses. C. Shall have the following features:

1. Switch mechanism shall be the quick-make, quick-break type. 2. Copper blades, visible in the OFF position. 3. An arc chute for each pole. 4. External operating handle shall indicate ON and OFF position and shall have lock-open

padlocking provisions. 5. Mechanical interlock shall permit opening of the door only when the switch is in the OFF position,

defeatable by a special tool to permit inspection. 6. Mechanical interlock shall prevent operating the switch when the door is open. The mechanical

interlock shall be defeatable by a special tool, and shall be U.L. listed as part of the disconnect. 7. Fuse mounting for the size and type of fuses specified. Furnish switches completely fused. Furnish

a complete set of spare fuses for each switch being installed. Deliver the fuses to the Owner prior to the final inspection.

8. Solid neutral for each switch being installed in a circuit which includes a neutral conductor. 9. Enclosures:

a. Shall be the NEMA types shown on the drawings for the switches. b. Where the types of switch enclosures are not shown, they shall be the NEMA types which are

most suitable for the environmental conditions where the switches are being installed. 10. Shall be heavy duty, Type HD, and horsepower rated as required.

2.2 LOW VOLTAGE UNFUSED SWITCHES RATED 600 AMPERES AND LESS

A. Shall be the same as Low Voltage Fusible Switches rated 600 amperes and less, except it shall not accept fuses.

B. All switches shall be installed with clearances as required by NEC Article 110.26.


The Project Manual of Technical Documents for ... - City of Charlotte

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