Children Friendly Park at Amritsar Town, (District ... - AWS

STANDARD BIDDING DOCUMENT

FOR

PROCUREMENT OF WORKS

Rehabilitation of Chamrung –

Children Friendly Park

at

Amritsar Town, (District Amritsar) Punjab.

(Under AMRUT)

(Estimated Cost Rs 20.02 lakh)

Volume -2

Section -5

TECHNICAL CONDITIONS, SPECIFICATIONS & REQUIREMENTS

MAY, 2018

MUNICIPAL CORPORATION AMRITSAR, PUNJAB

2

Amritsar Town Under AMRUT Scheme

Volume -2

SECTION-5 Technical Conditions,

Specification & Requirements

Contractor:

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Executive Engineer:

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Table of Content

1.1 Name of Work in DNIT ..............................................................................................................4

1.2 Design Proposal ........................................................................................................................4

1.3 Introduction of the City.............................................................................................................4

1.4 Detailed map/ drawing of existing and proposed park design ..................................................5

1.5 Condition assessment of the existing parks could be undertaken by using following assessment inventory ..............................................................................................................8

1.6 Assessment and Existing Condition of Park...............................................................................8

1.7 Instructions to Contractor .......................................................................................................12

1.8 Scope of Work.........................................................................................................................13

1.9 Specifications of Work ............................................................................................................14

1.10 Technical Specifications of Civil Work .....................................................................................39

1.11 Approval of Construction Drawings ...................................................................................... 102

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Abbreviations and Acronyms

A&OE Administrative & Office Expenses

AC Apex Committee

AMRUT Atal Mission For Rejuvenation and Urban Transformation

BRTS Bus Rapid Transit System

CA Central Assistance

CBO Community Based Organisations

CDP City Development Plan

CPHEEO Central Public Health and Environmental Engineering Organisation

DLP Defects Liability Period

DPR Detailed Project Report

GIS Geographic Information System

GOI Government Of India

IRMA Independent Review and Monitoring Agency

JICA Japan International Cooperation Agency

JnNURM Jawaharlal Nehru National Urban Renewal Mission

KLD Kilo Litre Per Day

LPCD Litres per Capita Per Day

MoUD Ministry of Urban Development

MLD Million Litres per Day

NMT Non Motorized Transport

NRW Non-Revenue Water

O&M Operation and Maintenance

OHSR Over Head Service Reservoir

PIU Project Implementation Unit

PMIDC Punjab Municipal Infrastructure Development Company

PWSSB Punjab Water Supply & Sewerage Board

PPP Public Private Partnership

RPMC Reform and Performance Management Cell

RWA Residents Welfare Association

SAAP State Annual Action Plan

SCADA Supervisory Control And Data Acquisition

SHPSC State Level High Powered Steering Committee

SLB Service Level Benchmark

SLIP Service Level Improvement Plan

SLNA State Level Nodal Agency

SLTC State Level Technical Committee

ULB Urban Local Bodies

UMC Urban Management Cell

UIDSSMT Urban Infrastructure Development Scheme for Small & Medium Towns

UGSR Underground Service Reservoir

uPVC Un plasticized Poly Vinyl Chloride

VFD Variable Frequency Drive

WTP Water Treatment Plant

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1.1 Name of Work in DNIT

(a) Providing, planting, watering and trimming trees, shrubs, hedges, ground covers,

flowers beds, turfing of grass/lawn etc. in well prepared soil good for plantation after

required grading etc. as per specifications for the development of green spaces;

(b) Construction of mounds, Kachha Pathway etc;

(c) Providing & installation of child friendly play equipment;

(d) Open gym equipment’s, trash-bins, benches etc;

(e) High mast lighting and other civil, miscellaneous works

Chamrung -Children friendly Park at Amritsar town,(under AMRUT)

Approx. Value of the Project Rs 20.02 lakh

1.2 Design Proposal

The design has been proposed by keeping in mind the guidelines of AMRUT scheme:

The parks has broadly divided into 4 areas

1. Play areas 2. Community revitalization 3. Recreational activity 4. Aesthetic

The design has been proposed with detailed treatment of play equipments and easier supervision by parents and with a barrier free movement for handicapped. The existing fountain has been considered as under repair and maintenance. Existing natural landscape features are retained and beautified by providing a tree guards. To enhance usage, entrance has been proposed as easy identified and accessible with proper barrier free parking facility. The planning has been proposed by creating centralised recreational facilities to confine the impacts of noise and movement of users. Adequate lighting has been proposed with all necessary street furniture for ease of public.

Public pathways has considered in design proposal for walks.

1.3 Introduction of the City

Amritsar historically also known as Rāmdāspur and colloquially as Ambarsar, is a city in north-western India which is the administrative headquarters of the Amritsar district - located in the Majha region of the Indian state of Punjab.

According to the 2011 census, the population of Amritsar was 1,132,761. The city is situated 217 km (135 mi) northwest of state capital Chandigarh. It is near Pakistan, with the Wagah Border being only 28 km (17.4 mi) away. The nearest city is Lahore, the second largest city in Pakistan, located 50 km (31.1 mi) to the west.

Hinduism and Sikhism are the main religions of Amritsar city, practised by 49.4% and 48% of the total population, respectively.

Amritsar is home to the Harmandir Sahib (commonly known as the Golden Temple), the spiritual and cultural centre for the Sikh religion. This important Sikh shrine attracts more visitors than the Taj Mahal with more than 100,000 visitors on weekdays alone and is the most popular destination for non-resident Indians (NRI) in the whole of India. The city also houses the Akal Takht, the highest seat of earthly authority of the Khalsa, and the committee responsible for the upkeep of Gurdwaras.

The Ramtirth temple situated at Amritsar is believed to be the Ashram site of Maharishi Valmiki, the writer of Ramayana. According to the Hindu mythology, Goddess Sita gave birth to Lava and Kusha, sons of lord Rama at Ramtirth ashram. Large numbers of people visit Ramtirth Temple at

https://en.wikipedia.org/wiki/India

https://en.wikipedia.org/wiki/Amritsar_district

https://en.wikipedia.org/wiki/Majha

https://en.wikipedia.org/wiki/Punjab,_India

https://en.wikipedia.org/wiki/Chandigarh

https://en.wikipedia.org/wiki/Pakistan

https://en.wikipedia.org/wiki/Wagah_Border

https://en.wikipedia.org/wiki/Wagah_Border

https://en.wikipedia.org/wiki/Lahore

https://en.wikipedia.org/wiki/Hinduism

https://en.wikipedia.org/wiki/Sikhism

https://en.wikipedia.org/wiki/Harmandir_Sahib

https://en.wikipedia.org/wiki/Sikh

https://en.wikipedia.org/wiki/Taj_Mahal

https://en.wikipedia.org/wiki/Non-resident_Indian_and_person_of_Indian_origin

https://en.wikipedia.org/wiki/Akal_Takht

https://en.wikipedia.org/wiki/Khalsa

https://en.wikipedia.org/wiki/Shiromani_Gurdwara_Parbandhak_Committee

https://en.wikipedia.org/wiki/Gurdwaras

https://en.wikipedia.org/wiki/Ashram

https://en.wikipedia.org/wiki/Valmiki

https://en.wikipedia.org/wiki/Ramayana

https://en.wikipedia.org/wiki/Hindu_mythology

https://en.wikipedia.org/wiki/Sita

https://en.wikipedia.org/wiki/Rama

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annual fair. Nearby cities to Amritsar, Lahore and Kasoor were said to be founded by Lava and Kusha, respectively. During AshvamedhaYagna by Lord Rama, Lava and Kush captured the ritual horse and tied Lord Hanuman to a tree near to today's Durgiana Temple. During Navratra festivities it is considered to be auspicious by Hindu population of the city to visit that temple.

The main commercial activities of Amritsar include tourism, carpets and fabrics, farm produce, handicrafts, service trades, and light engineering. The city is known for its rich cuisine, and culture, and for the Jallianwala Bagh massacre in 1919 under British Rule. Amritsar is home to Central Khalsa Orphanage, which was once home to Udham Singh, a prominent figure in the Indian independence movement. Gandhi Ground is the main sports complex in the city which is home to the Amritsar Games Association, (AGA).

1.4 Detailed map/ drawing of existing and proposed park design

Existing –Chamrung –Children Friendly Park

https://en.wikipedia.org/wiki/Lahore

https://en.wikipedia.org/wiki/Kasoor

https://en.wikipedia.org/wiki/Ashvamedha

https://en.wikipedia.org/wiki/Ashvamedha

https://en.wikipedia.org/wiki/Rama

https://en.wikipedia.org/wiki/Hanuman

https://en.wikipedia.org/wiki/Durgiana_Temple

https://en.wikipedia.org/wiki/Hindu

https://en.wikipedia.org/wiki/Jallianwala_Bagh_massacre

https://en.wikipedia.org/wiki/Udham_Singh

https://en.wikipedia.org/wiki/Indian_independence_movement

https://en.wikipedia.org/wiki/Indian_independence_movement

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Proposed –Chamrung –Children Friendly Park

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1.5 Condition assessment of the existing parks could be undertaken by using following assessment inventory

Park Assessment Inventory:

To be used for the assessment of current condition of the parks in the city.

Name of the Park: -

1. Garden Colony Park Name of Ward/ Zone:

Community Park. Category of Park:

Community Park Area of Park: -

1. Chamrung Park. - 7595.95sqm

1.6 Assessment and Existing Condition of Park

Calculation of per person capacity of green space= 1000 persons per Acre.

Sr.No. Element Assessment Response Remarks

1 General Space.

Open/ Green space, landscaped area (manicured etc.), and General areas for large organized social interaction

Population catered

1877 Persons approx

Condition 1. Very good 2. Good 3. Average 4. Bad

Average

Flatness 1. Completely flat 2. Partially

Undulating 3. Highly

Undulating

Completely flat

2 Paved Pathways

Existence and Surface Existence 1. Yes

2. No Yes


Good

Width 3000 mm approx 3000mm width approx

Flatness 1. Completely flat 2. Partially

Undulating 3. Highly

Undulating

Completely flat

Obstruction 1. Yes 2. No

No

Shaded area 1. Yes Yes

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2. No

Water Quality 1. Very good 2. Good 3. Average 4. Bad

Average

Movement 1. Yes 2. No

Yes

4 Eating/Drinking features Drinking water facilities, picnic areas, vending. Tube well/ Piped water, Space for Vendors – local, snacks, ice cream kiosks.

Availability of Drinking Features

1. Yes 2. No

No

Supply Source (if others then pl specify) 1. Piped water 2. Under ground

water-Hand pump

3. Others 4. Tubewell

Tubewell

Eating Features 1. Yes 2. No

No

5 Facilities

Metallic Fence/ Boundary Wall, Theme based Entry, Gate, Recreation Centre, Shelters/ Pavilions/ Entertainment venue/ Stage/Amphitheatre, Basic Illumination with designer lamps using LED lights, Parking Space, Compost Beds, Public Conveniences, Dustbins, Rain Water, Harvesting structures for paved area wherever possible (for optimum utilization of water)

Boundary Type 1. Kaccha 2. Pucca 3. Semi Pucca

Pucca

Boundary wall 1. Concrete 2. Metallic Fence 3. Both

Both

Number of Entry Gates

3 Average condition

Material of Entry Gates

1. Concrete 2. Metallic Fence 3. both

concrete

Recreational centre/ Amphitheatre/ Stage

1. Yes 2. No

No

If yes, condition 1. Very good 2. Good 3. Average 4. Bad

N.A

No. Of Illumination points (all)

Whether Solar illumination being used

1. Yes 2. No

No

No. Of Illumination points (Solar)

1. Yes 2. No

No

Parking Space 1. Yes 2. No

No

Public Convenience (Men)

1. Yes 2. No

No

Public Convenience (Women)

1. Yes 2. No

No

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Availability of Dustbins

1. Yes 2. No

No

No. of Dustbins

Availability of Compost Beds

1. Yes 2. No

No

Availability of Rain Water Harvesting Facility

1. Yes 2. No

No

6 Sitting or Resting Features

Benches, Picnic Tables, Seat walls. Picnic shelters - Semi-Pucca/ Pucca Huts, (equipped with energy efficient solar panels & LED lights)

Availability of Benches

1. Yes 2. No

No

No. of Benches N.A N.A

Availability of Picnic Tables

1. Yes 2. No

No

No. of Picnic Tables

N.A

Availability of Semi-Pucca Huts

1. Yes 2. No

No

7 Landscaping

Flowers, shrubs/ bushes, landscaping, manicured garden and compost beds. Play Squares/ Circle integrated with fountains, sculptors of personalities, Drawing wall for children, Illumination, Garden Clocks.

Variety

Pl Specify Existing trees fully grown are planted. No shrubs and rose beds

Some existing trees, shrubs needs to be retained.

8 Play Set/ Structures (for Children) General play set, soft ball play area, thing to hang from, slide down, climbing, descending and standing features, swings, blacktop, spring, toys, imaginary play structures, hanging sets –sea saw etc.

Openness 1. 4 Sides Open

2. 3 side open

3. 2 sides open

4. 1 side open

5. Congested Access

N.A

Visibility 1. Easily visible 2. Moderately

visible 3. Invisible

N.A

Shaded area 1. Yes 2. No 3. Partially

N.A


N.A

Levelness 1. Easy accessibility for Children

2. Uneasy access for children

N.A

Colourfulness 1. Yes 2. No

N.A

9 Play Area (for Adolescent) General Play Area (Kite flying, flying disc, soft

1. Yes 2. No

N.A

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Existing Condition of park

Badminton courts, Kabaddi area, kite flying, flying discs, soft ball tossing area etc. Should be safe & secured for children (High tension line/ transformer must be relocated)

ball toss area etc.)

Badminton Court 1. Yes 2. No

No

Kabaddi Area 1. Yes 2. No

No

Drainage 1. Properly Drainage

2. Improper Drainage

3. Mostly Inundated/ Flooded

N.A

10 Provisions for the physically challenged.

1. Yes 2. No

If yes then specify

Yes . NO level difference

11 Any other feature/ component N.A

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1.7 Instructions to Contractor

The scope of work includes the up gradation of Chamrung-Children friendly park, Amritsar. The condition assessment of each park is stated above which is required to be improved as detailed

under:-

(i) The work will be carried out strictly as per horticulture specifications of Punjab Common Schedule

of Rates.

(ii) The fresh earth shall be supplied as per Punjab PWD specification suitable for plantation and the same should not be dug from the Government Land. The proof of making payment to the farmers/

owner of approved quarry should be attached with the claim / bill.

(iii) During execution period the regular maintenance including digging, cutting, pruning, watering, spray with micro nutrient, addition of manure, pesticide etc. shall be done periodically.

(iv) All the tool and plants/ equipment, manpower, required from time to time shall be deployed by the agency/contractor.

(v) If there is any mortality / causality in the grass/plants/ shrubs/ trees etc. the agency shall replace the same plant of same species, of pro-rata height with in seven (7) days at his cost, failing which penalty shall be recovered. If the agency still fails to replace the plant in further seven days, the

same may be replaced by the department/ MC at the cost of the agency/contractor.

(vi) Necessary arrangement for protection of plants shall be made by the agency for any mortality / causality due to any reason, of grass/plants/ shrubs/ trees etc. the agency shall replace the same plant of same species at his cost during execution and during defect liability period.

(vii) The agency shall be responsible for supply of water for irrigation as per detailed specifications and conditions during execution period also.

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1.8 Scope of Work

Ser no Description

I Plantations :-

1 Turfing of Lawn :

2 Planting permanent hedges :

3 Supplying and Planting Permanent Trees :

4 Planting Permanent Shrurbs :

5 Planting Ground cover plants:

6 Planting flower beds :

7 Planting rose beds :

8 Creating earthen mounds :

9 Painting New Letters :

II Civil works :

1 Existing Compound Wall Repair :

2 Kaccha Pathway :

III High mask lighting system :

1

Providing and Fixing of 12 Mtr High Mast with Like Brackets per CSR. Supply/ Fixing of 120Watt LED Floodlight 6 Nos, Control Panal, Single Dome LED Aviation Obstruction Light, Lowering and Raising arrangement and Earthing Pit 2 nos for each high mask including earthwork, Supply and laying of conduct and service cable etc.

2

IV Play equipment :

1 Providing and Fixing Merri-Go-Round : 1

2 Providing and Fixing Play Clubbed Unit : 1

3 Providing and Fixing Doubles Slides : 1

4 Providing and Fixing RCC Bench : 15

5 Providing and Fixing Plastic Trash Bin : 10

6 Providing and Fixing Swing 1

V Gym equipment :

1 Providing and Fixing Waist Shaper / Air Swing 1

2 Providing and FixingTriple Twister: 1

3 Providing and Fixing Air Walker: 1

4 Providing and Fixing Cycle : 1

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1.9 Specifications of Work

Ser No

Name of Shrubs

Pictures Height of

Plant Specification/Work

Description Terms And Conditions

1

Star Plam Shrub

4’-0” To 4’-6”

Planting permanent shrubs including digging of pits on earth size 0.60mmx0.60mmx0.60mm deep, refilling the excavated earth mixed with manure supplied @ 0.056 cum each and watering Supply through the tractor tanker. (Mentioned as per design and drawing and Engineer-in-charge) Specification

Supplying and planting permanent trees including digging of earth pits size 75cmx75cmx75 cm deep, refilling the excavated earth with manure supplied @ 0.113 cum each and watering Supplying through tractor tanker. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Shrubs

till the handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned Department/ Engineer-in-Chief.

Supply of shrub (well developed) plants along with farm yard manure and mixing it with insecticide chlorpyriphos.

Labour work for planting, digging and refilling the pits with manure and watering the plants.

2

Bottel Brush Shrub

3

Cassia Glauca Shrub

4

Hamelia Shrub

5

Yellow Kaner Shrub

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Ficus Star Light Shrub

7

China Palm Shrub

8

Ficus Shrub

9

Black Ficus Shrub

10

Hibiscus Shrub

11

Tecoma Stans

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Kangi Palm /China Palm

13

Banda Ficus Shrub

Ser No

Name of Trees

Pictures Height of

Plant Specification/Work Description

Terms And Conditions

1

Koelreuteria Paniculata Tree

5’-0” To 6’-0”

Supplying and planting permanent trees including digging of earth pits size 75cmx75cmx75 cm deep, refilling the excavated earth with manure supplied @ 0.113 cum each and watering Supplying through tractor tanker. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Trees till the handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned Department/ Engineer-in-Chief.

Supply of trees (well developed) along with a bamboo stick for supporting the tree including farm yard manure and mixing it with insecticide chlorpyriphos.

Labour work for planting, digging and refilling the

2

Bottle Brush Tree

3

Chakrassia Tree

4

Kachnar Tree

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Chursia Tree

pits with manure and watering the trees.

6

Amaltas Tree

7

Lagerstromia Tree

8

Khair tree

9

Kikar tree

10

Neem Tree

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11

Tun Tree

12

Camphor tree

13

Bohar tree

14.

Pilkan Tree

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15.

Kaner tree

17

Rubber Tree

Ser No

Name of Hedges

Pictures Height of

Plant Specification


1

Kaner Hedge

2’-0” To 3’-0”

Planting permanent hedges including digging of trenches 60cm. wide and 30cm. deep, refilling the excavated earth mixed with manure supplied @ of 4.65 cum per 100 mtrs & Supplying & planting hedge plants at 30cm. apart. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Hedges till the

handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned

2

Lantana

3

Duranta

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4

Chandini

Department/ Engineer-in-Chief.

Supply of hedges (well developed) plants along with farm yard manure and mixing it with insecticide chlorpyriphos.

Labour work for planting, digging and refilling the pits with manure and watering the plants.

5

Murraya

6.

Bamboo hedge

Ser no

Name Of Ground Covers

Pictures Height Of

Plant Specification


1

Alernanthera Red -Ground Cover

1’-0” TO 1’-6 HIGH

Planting ground cover plants including digging and refilling of beds with excavated soil and FYM, Fertilizer and insecticides, planting of saplings at 30cm distance from plant to plant and row to row, providing and fixing brick tiles edging. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Ground Covers

till the handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the

2

Lemon Grass –Ground Cover

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3

Ribbon Grass -Ground Cover

concerned Department/ Engineer-in-Chief.

Supply of ground cover (well developed) plants along with refilling the beds with excavated soil and FYM, fertilizer and insecticide/pesticide.

Brick tiles to be fixed around the edge.

Labour work for planting, refilling, digging, fixing earth ball tightly in the holes and watering the pits and filling it with manure.

4

Gardinia Ground Cover

Ser No

Name of Specimen

Plant Pictures

Height of Plant

Specification Terms And Conditions

1

Arocaria Specimen Plant

5’-0” To 6’-0” Planting rare &

specimen plants including digging and refilling of pits with excavated soil and FYM, fertilizer and insecticides, planting of sapling in position. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Specimen Plants

till the handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned

2

Juniperus Specimen Plant

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3

Pagoda Tree Specimen Plant

Department/ Engineer-in-Chief.

Supply of trees (well developed) along with a bamboo stick for supporting the tree including farm yard manure and mixing it with insecticide chlorpyriphos.

Labour work for planting, digging and refilling the pits with manure and watering the trees.

4

Pheonix Palm Specimen Plant

5

Cycus Specimen Plant

Ser No

Name of Decorativ

e Plant Pictures

Height of Plant


1

Furacraea

2’-0” To 3’-0” Supplying decorative

plants suitable for earthen pots size 30cm dia and 30cm deep(average size),and displaying outdoor including the cost of material pot and plant and planting etc. complete in all respects. (Mentioned As Per Design And Drawing And Engineer-In-Charge)

The Contractor shall be responsible for the survival of Decorative Plant

till the handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to

2

Bismarkia

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3

Song Of India

the satisfaction level of the concerned Department/ Engineer-in-Chief.

Supply of decorative (well developed) plants suitable for earth pots along with pot mixture containing soil, sand , FYM, fertilizers and bio-insecticide (neem cake).

Labour work for transplanting the sapling in pot and watering the same

Ser No

Name of Flowers

Pictures Height of

Plant Specification


1

Seasonal Flowers

1’-0” To 2’-0”

Planting flower beds including digging and refilling of beds with excavated soil and FYM, fertilizer and insecticides, planting of sapling at 30cm distance from plant to plant and row to row. (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Flowers till the

handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned Department/ Engineer-in-Chief.

Supply of flower beds along with refilling the beds with excavated soil and FYM, fertilizer and insecticide/pesticide.

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Labour work for planting, digging the beds, fixing earth ball tightly in the holes and watering the flower beds.

2

Rose Beds

1’-0” To 2’-0”

Planting rose beds including digging and refilling of beds with excavated soil and FYM, fertilizer and insecticides, planting of sapling at 0.75cm distance from plant to plant and row to row (as per Design and Drawing). (Mentioned as per design and drawing and Engineer-in-charge)

The Contractor shall be responsible for the survival of Rose Beds till the

handing over of the site to the competent authority (during the execution period). If any plant dies during this period the contractor shall be responsible for replacing the same plant of similar height and maintain it up to the satisfaction level of the concerned Department/ Engineer-in-Chief.

Supply of flower beds along with refilling the beds with excavated soil and FYM, fertilizer and insecticide/pesticide.


Labour work for planting, digging the beds, fixing earth ball tightly in the holes and watering the flower beds

3.

Vinca Rosea (Sadabhar )

Ser No

Name Of Grass/Tur

fing Pictures

Height Of Plant


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1

Selection Of No 1 Grass

--------

Turfing of Lawn With Planting Of Selection No.1 Superior Quality Grass With Machinery Including ploughing the land, leveling and dressing, applying farm yard manure in 2.5 cm layer, application of insecticide/pesticide to safe guard against soil borne diseases. (Mentioned as per design and drawing and Engineer-in-charge)

Supply of selection No. 1 superior quality Grass along with farm yard manure, good earth, sand, FYM, fertilizers, insecticide/pesticides.

Tractor for Ploughing the land.

Labour work for fine dressing the area with planks/ wooden phatti to give required shape and proper slope and to make the surface ready for grassing including planting of grass, mixing of manure, cleaning and disposal of malba.

Weeding and watering the grass at a one week interval.

Mowing the grass with power lawn mower.

2

Earth Filling Of Whole Park

Earth filling under floors with surplus soil containing more than 40% taking outside the premises in 15cm layers including ramming watering and consolidated lead upto 1000 mtrs.

Refer:-Technical Specification for Civil Works.

Ser No

Name of Work

Pictures Work Specification Terms And Conditions

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1

Boundary Wall And Railing

Construction of boundary wall which includes earthwork excavation, PCC, brickwork, pointing,plastering, painting, railing etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)

Refer Technical Specification for Civil Works.

2

Pathways Pakka

Construction of Pakka Pathway which includes earthwork excavation, PCC, interlocking of pavers and CC edging etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)


3

Pathway Kachha

Construction of Kachha Pathway which includes earthwork excavation, compaction and brick edging etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)


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4

Wicket Gates

Construction of Wicket Gate which includes fabricating and fixing of structural steel gate with painting etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)


5

Main Gate

Construction of Wicket Gate which includes earthwork excavation, PCC, brickwork, pointing, plastering,painting, steel gates etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)


6

Cycle Track

Construction of Cycle track which includes earthwork excavation, PCC and RCC etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge)


Ser No

Name of Work

(Garden Furniture

)


1

High Mast Light

Providing and Fixing of 12 Mtr High Mast with Like Brackets per CSR. Supply/ Fixing of 120Watt LED Floodlight 6 Nos, Control Panal, Single Dome LED Aviation Obstruction Light, Lowering and Raising arrangement and Earthing Pit 2 nos etc Complete.


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2

Benches

Each RCC BENCH Casted in M30 Grade with water proof & Anti corrosive consist of 2no L-Shaped base support of 100 mm thick (1000mm (Back Ht) X 450mm (Front Ht) X 620mm (Base width)) with Planks of 5 no (500mm X 100mm X50mm) & 1 no (1500mm X 200mm X 50mm),All Parts joined with galanvised Nuts & Bolts of suitable sizeand all bolts are sealed after assembly As per Drawing and the Engineer in charge. Note:- Rate includes GST, CP, Fright Charges & Instalation.


3

Dustbins

Placed as per design and

darwing/Engineer in-charge

Providing and Fixing Plastic Trash Bin 1.25 M Height With MS holding Stand Complete. Note:- Rate includes GST, CP, Fright Charges & Instalation.


4

Gazebo’s

Construction of Wicket Gate which includes earthwork excavation, PCC, brickwork, pointing, painting, flooring and structural steel works, roof etc. complete as detailed in Bill Of Quantities. (Mentioned as per design and drawing and Engineer-in-charge


Ser No

Name of Play

Equipments


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1

Mari-Go- Round

Placed as per design and

drawing /Engineer in-

charge

P/F Of Revolving Plateform Are Made Up Of Fibre And Steel With 6 Feet Dia. The Platforms Of This Merri Go Round Consists Of Non Skid Type Fibre Made With 6mm Thickness. The Platforms Frame Is Made In 25 X 5 And 40 X 5 Ms Angle. It Is Provided With Handrails Of 20mm Ms Pipes.


2

Swing

Providing and Fixing Of Swing With All Accessories, Main Structure Pipe 65 Mm. Dia. Galvanised Steel Pipe,Pvc Coated Chain, Swing Flap Rubberised Complete All Bolt, Nut Are Galvanised.


3

See Saw

P/F of the 4 seater See Saw is fabricated on 50nb MS base Pipes with T handles on either side. The size of 4 seater see-saw is L-10’, B-2’ made up of Fibre and Steel.


4

Slide

Slide are made ROTO moulding (LLDPE Plastic) main structure 50mm Galvanalised Pipe Platform Ladder Galvanalised/Aluminimum/ Sheet Ladder With railing pipe 20/25 MM NB GI Pipe. All Accessories Bolt,Nut etc are Galvanalised.


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5

Clubbed Play Unit

Supply and Fixing of Roof,Slide,Panel, Decoration are made ROTO Moulded (LLDPE) Plastic. Main Structure Pipe 80MM NB Galvanised Steel Pipe. Platform, Ladder GI Sheet/Aluminium Chequered Sheet. Ladder With pailing, Climbing Pipe 20 & 25 MM NB GI Pipe. All Accessories Bolt, Nut etc. are Galvanised. Note:- Rate includes GST,CP,Fright Charges & Instalation


Ser No

Name Of Gym

Equipments


1

Waist Shaper

Providing and fixing twister of size 1400x1400x1350mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and power. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing base plate cover made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with


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concrete of minimum strength M-25 and J shape welded bolts and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc Complete. Note:- Rate includes GST,CP,Fright Charges & Instalation.

2

Triple Twister

Providing and fixing twister of size 1400x1400x1350mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and power. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing base plate cover made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts


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and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc Complete. Note:- Rate includes GST,CP,Fright Charges & Instalation.

3

Air Walker

Providing and fixing of air swing in pair of size 1100x550x1480mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick and rest of the pipe 40mm dia all pipes made up of hot rolled tubular steel and hot dipped galvanized and power coated .All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Pedals and base plate cover shall be made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts


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and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

4

Double Skier

Providing and fixing double cross walker of size 1610x600x1600 mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and power coated. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Pedals and base plate cover shall be made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape wlded bolts and once the concrete is set, fix the equipment on to it and cover nuts


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and bolts with the base plate. All complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

5

Cycle

Providing and fixing rowing machine of size 850×490×1300 mm (APPROX) fabricated with main post of 38mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and power. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Seat shall be made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval


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Contractor:

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Executive Engineer:

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of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

6

Hip Twister And Stepper

Providing and fixing of stair stepper in a combination of pair and a single step of size 1200x850x1500 mm (APPROX) fabricated with main post of 114 mm dia and 2.5mm thick and rest of the pipe 40mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and powder coated. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Pedals and base plate cover to be made from plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All


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Executive Engineer:

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complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

7

Body Shaper

Providing and fixing Elliptical exerciser of size 1220x550x1600 mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick all pipes made up of hot rolled tubular steel and hot dipped galvanized and power coated. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Pedals and base plate cover shall be made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval of engineer-in-charge


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Executive Engineer:

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regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

8

Chest Shoulder Shaper

Providing and fixing of CHEAST AND SHOULDER SHAPER of size: 3.6M x 1.9M(APPROX) fabricated with main post of 100 NB GI B-class Pipe with seat frame of 32 NB GI B-CLASS Pipe and main frame of 40 NB GI B-CLASS Pipe and other parts like Handel Frame,Leg Rest,Handel cover, Seat and Back Rest, Bottom cover, Stopper, Pipe Cover, Bearing housing and Pin,Nut boults etc complete as per standards with Powder coat with 80 Micron thickness. Note:- Rate includes GST,CP,Fright Charges & Instalation.


9

Leg Shaper

Providing and fixing of leg press of size 2000x550x1600 mm (APPROX) fabricated with main post of 114mm dia and 2.5mm thick and rest of the pipe 40mm dia all pipes made up of hot rolled tubular steel and hot dipped galvanized and power. All pipe are welded with joints as necessary and dressed off removing sharp edges and burrs. Zinc primer paint to be applied at all welding points prior to finishing. Pedals


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and base plate cover shall be made of plastic with rounded edges to prevent any impact of injury and UV resistant. Bearing used shall be maintenance free, duly oil sealed and self lubricated. All open ends of pipe to be closed by GI/LLDPE caps for user safety. The equipment to be fixed on ground with concrete of minimum strength M-25 and J shape welded bolts and once the concrete is set, fix the equipment on to it and cover nuts and bolts with the base plate. All complete as per direction and approval of engineer-in-charge regarding material, shape of equipment, colour on metal, seat and base cover plate and fixing of equipments etc. Note:- Rate includes GST,CP,Fright Charges & Instalation.

Ser No

Name of Other Works


1

Borewell Drilling of borewell with casing pipe upto the required depth including submersible pump with all electrical and mechanical accessories etc. complete as detailed in Bill Of Quantities


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1.10 Technical Specifications of Civil Work

A) Earthwork

Applicable Codes

The following Indian Standard Codes, unless otherwise specified herein, shall be applicable.

In all cases, the latest revision of the codes shall be referred to:

IS 783 : Code of Practice for Laying of Concrete Pipes.

IS1200 : Methods of Measurement of Building and Civil Engineering Works (Part 1 to Part 28)

IS 3764 : Excavation Work – Code of Safety

IS 2720 : Methods of Tests for Soils

Part 2- Determination of Water Content

Part 7- Determination of Water Content-Dry Density Relation Using Light Compaction

Part 8- Determination of Water Content – Dry Density Relation Using Heavy Compaction

Part 28 -Determination of Dry Density of Soils in Place, by the Sand Replacement Method

Part 29 -Determination of Dry Density of Soils in Place, by the Core-Cutter Method

Part 31-Field Determination of California Bearing Ratio

Excavation: General

General excavation means excavation required for general site grading, structures, roadwork’s and borrows areas and shall not include Trench Excavation. General excavation may also include miscellaneous isolated lengths of trenches inside or adjacent to other structures. The ground shall be excavated by such methods and to such dimensions and depths as shall allow for the proper construction of the Works and safety of personnel and equipment used on excavation. Slopes required for stable formation of sides shall be catered to in the rates quoted for the item. Where nominal payment limits of excavation are not shown in the Drawings or otherwise specified, they shall be deemed to be the minimum net limits which would allow the outline of the completed structure to be lowered vertically from ground level into its final position. The Contractor shall make his own allowance for any working space required, and any excavation outside the aforesaid limits which has not been ordered by the Engineer, whether it be excavated to suit the Contractor’s method of working or unavoidable over break or due to his carelessness or error, shall be held to be Excess Excavation and shall not be paid. Supporting Excavations The Contractor shall well and effectively support the sides and ends of all excavations to prevent any fall or run from any portion of the ground outside the excavation and to prevent settlement or damage to structures adjacent to the excavation. Any extra excavation necessary to provide space for such support or other working space shall be held to be Excess Excavation. If, for any reason, any portion of the bottoms, sides or ends of any excavations shall give way, the Contractor shall at his own expense take all necessary remedial measures including the excavation and removal of all the ground thereby disturbed both within and

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outside the nominal limits of excavation and such extra excavations shall be held to be Excess Excavation. Where the Contractor elects and is permitted by the Engineer to perform excavations with sloping faces (other than sloping excavations required as permanent features of the Works) and without shoring, the excavated faces shall be to stable slopes and heights and the resulting extra excavation shall be held to be Excess Excavation. Trimming Excavations

When excavating to specified levels for the foundation of any structure or to specified limits for the face of any structure required to about undisturbed ground, the Contractor shall not excavate the last 150 mm until immediately before commencing the constructional work, except where the Engineer shall permit otherwise. Should the Contractor have excavated to within 150 mm above these specified levels or to within 150 mm of these specified limits before he is ready or able to commence the constructional work he shall, where required by the Engineer, excavate further so as to remove net less than 150 mm of material immediately before commencing the constructional work and such further excavation shall be held to be Excess Excavation. Before commencement of any constructional work all shattered and loose material shall be removed from the excavations by hand so as to ensure that the work rests on a solid and perfectly clean foundation or abuts against solid ground. Inspection by the Engineer

When the specified levels or limits of excavation are reached, the Engineer will inspect the ground exposed and if he considers that any part of the ground is by its nature unsuitable he may direct the Contractor to excavate further. Such further excavation shall be refilled to the specified levels or limits with concrete, selected excavated material or selected imported material as directed by the Engineer, but shall not be held to be Excess Excavation. Should the material forming the bottom of any excavation, while acceptable to the Engineer at the time of his inspection, subsequently become unacceptable to him due to exposure to weather conditions or due to flooding or have become puddle, soft or loose during the progress of the Works, the Contractor shall remove such damaged, softened or loosened material and excavate further by hand. Such further excavation shall be held to be Excess Excavation. Disposing Excavated Material

All excavated material shall remain the property of Employer. The disposal of excavated material within the Site will, unless the Engineer orders otherwise, be at the Contractor’s discretion but shall be so arranged as to suit the overall requirements for the construction of the Works. The Contractor shall ensure that no excavated material which is suitable for and is required for reuse in the Works is transported to the Engineer’s tip unless so ordered by the Engineer. The Term “excavation” shall be deemed to include for disposing excavated material within the Site in any of the following ways:- Backfilling to excavations and completed structures (except where such backfilling is specified as special filling) using suitable excavated material and including placing in temporary spoil tips and any double handling required all so as specified hereafter, or transporting and placing approved excavated material in permanent spoil tips, including the shaping and drainage of such tips all as specified hereafter; or Transporting selected excavated material to specified locations within the Site where embankments are to be constructed or where filling around structures is specified to be constructed as embankment including tipping ready for spreading and compacting and any double handling required.

Disposal of Materials: Lead

Lead for deposition of the excavated materials should be 1 Km for the purpose of measurement of lead, the area to be excavated or filled or area in which excavated material is to be eposited/disposed off shall be divided into suitable blocks and for each of the blocks, the distance between centerlines shall be taken as the lead which shall be measured by the shortest straight line route on plan and not the actual route taken by contractor. No extra compensation is admissible on the grounds that the lead including that for borrowed material had to be transported over marshy or kaccha land route.

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Excess Excavation to be made good

The Contractor, at his own expense, shall, if directed, remove from the Site all materials resulting from Excess Excavation and shall make good the same with such kind of fill material or such class of concrete as may be reasonably required by the Engineer having regard to the circumstances. Local Rules and Regulations

The Contractor shall familiarize himself with the local rules and regulations governing the excavation, quarrying operations, etc. and the work shall be carried out strictly in accordance with rules and regulations, if any. Whenever a quarry is required to be opened in connection with the execution of work covered under this Contract, the Contractor shall investigate that it shall yield stones and other materials such as sand, murrum, soil etc., of approved quality and shall satisfy himself as to the availability in desired quantity. He shall supply free of cost necessary quantity of sand, stone, metal aggregate, etc. to the Engineer for carrying out tests as required by the Engineer and well in advance of its use so as to get approval to the quality of the material. The cost of opening and operating and transporting the material from the quarry shall be borne entirely by the Contractor. The Contractor shall obtain all necessary permission from the concerned authorities before opening the quarry. In case of quarries in private lands, it is for the Contractor at his cost to arrange for quarrying of the material on payment of whatever charges as may be due to the owner. Transportation/Disposal of Excavated Material off Site

Excavated material which is not required for or is unsuitable for reuse in the works shall be disposed off directed to locations designated by the Engineer. Such material shall remain the property of the Council and shall be transported and deposited at the places designated by the Engineer. Material so deposited shall be shaped up or spread and leveled as directed by the Engineer. Any necessary work to provide access to Engineer’s tip or other preliminary work in connection therewith shall be carried out by the Contractor in consultation with the Engineer and the expenses thereof shall be included in the rate quoted for the item. Dewatering

All excavations shall be kept free of water. Grading in the vicinity of excavations shall be controlled to prevent surface water running into excavated areas. Contractor shall remove by pumping or other means any water inclusive of rainwater and subsoil water accumulated in excavation and keeps all excavations dewatered until the foundation work is completed and backfilled. Sumps made for dewatering must be kept clear of the excavations/trenches required for further work. Method of pumping shall be acceptable to the Engineer, but in any case, the pumping arrangement shall be such that there shall be no movement of subsoil or blowing in due to differential head of water during pumping. Pumping arrangements shall be adequate to ensure no delays in construction. When there is a continuous inflow of water and quantum of water to be handled is considered in the opinion of Engineer as large, well point system, single stage or multistage, shall be adopted. The Contractor shall submit to Engineer his scheme of well point system including the stages, the spacing, number and diameter of well points, headers etc., and the number, capacity and location of pumps for approval. The cost of dewatering shall be included in the item rate for excavation. Measurement of General Excavation

Items in the Bill of Quantities for “excavations” except where expressly indicated otherwise shall apply to excavation in any material and shall include not only all works in connection with excavation and backfill but also stacking the excavated material on the Site for being used as backfill or disposing the excavated material to permanent spoil tips or to embankments all as specified. Items for “Disposal to Engineer’s tip” measured extra over excavation items, shall include for the disposal of excavated material to any tipping location designated by the Engineer, all as specified, at a distance from the place of excavation not exceeding Fifteen kilometers. By the most direct possible route. Items for “Excavation in Soft & Decomposed Rock or Hard Rock”, measured E.O. other excavation items, shall include for all additional work in connection with excavation in Soft & Decomposed Rock or Hard Rock and also for any

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allowance the Contractor considers necessary to cover over break and the making good thereof. All work in connection with excavation and subsequent disposal of excavated material as specified shall be valued by measurement of such items as are set forth in the Bill of Quantities for “Excavation” and where appropriate, items for “Soft & Decomposed. Rock or Hard Rock and for disposal to the Engineer’s tips. All such measurement shall be the net volume of the material excavated to the specified levels and limits described herein or shown on the Drawings, no allowance being made for bulking. No separate payment shall be made in respect of Excess Excavation. Maximum 300 mm additional width from the outer face of the substructure will be considered as per IS 1200 for measurement of excavation. Royalties shall be paid by the contractor for excavated material within/outside the Municipal Council’s Limit as per the prevailing government /semi government (Gram Panchayat) rules and regulations.

B) Concrete Work

Scope

This specification covers the general requirements for concrete to be used on jobs using RMC/on-site production facilities including requirements in regard to the quality, handling, and storage of ingredients, proportioning, batching, mixing and testing of concrete and also requirements in regard to the quality, storage, bending and fixing of reinforcement. This also covers the transportation of concrete from the mixer to the place of final deposit and the placing, curing protecting, repairing and finishing of concrete. Applicable Codes and Specifications

The following specifications, standards and codes are made a part of this specification. All standards, tentative specifications, specifications, codes of practice, referred to herein shall be the latest editions including all applicable official amendments and revisions. In case of discrepancy between this specification and those referred to herein this specification shall govern.

IS 269 : Specification for 33 grade ordinary Portland cement.

IS 8112 : Specification for 43 grade ordinary Portland cement.

IS 12269

: Specification for 53 grade ordinary Portland cement.

IS 455 : Specification for Portland slag cement.

IS 12330

: Specification for sulphate resisting Portland cement.

IS 1489 : Specification for Portland pozzolana cement.(Parts 1 & 2)

IS 4031 : Methods of physical tests for hydraulic cement.(Parts 1 to 15)

IS 650 : Specification for standard sand for testing cement.

IS 383 : Specification for coarse and fine aggregates from natural sources for concrete.

IS 2386 : Methods of test for aggregates for concrete.(Parts 1 to 8)

IS 516 : Method of test for strength of concrete.

IS 1199 : Methods of sampling and analysis of concrete.

IS 2062 : Steel for general structural purposes.

IS 3025 : Methods of sampling and test (physical and(Parts 1 to 49)chemical)for water and waste water.

IS 432 : Specification for mild steel and medium tensile (Parts 1 & 2)-steel bars and hard drawn steel wire for concrete reinforcement.

IS 1566 : Specification for hard-drawn steel wire fabric for concrete reinforcement.

IS 4990 : Specification for plywood for concrete shuttering work.

IS 2645 : Specification for integral cement waterproofing compounds.

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BS 4449 : Specification for carbon steel bars for the reinforcement of concrete

IS 10262

: Recommended guidelines for concrete mix design.

SP 23 : Handbook on concrete mixes (based on Indian Standards).

IS 458 : Specification for precast concrete pipes (with and without reinforcement).

IS 1786 : Specification for high strength deformed steel bars and wires for concrete reinforcement.

IS 13620

: Fusion Bonded Epoxy Coated Reinforcing Bars-Specification.

IS 1893 : Criteria for Earthquake Resistance Design of structures.

IS 13290

: Code of Practice for Earthquake Resistance Design and Construction of Buildings.

IS 1791 : Specification for batch type concrete mixers.

IS 2438 : Specification for roller pan mixer.

IS 2505 : Specification for concrete vibrators-immersion type-general requirements.

IS 2506 : Specification for general requirements for screed board concrete vibrators.

IS 2514 : Specification for concrete vibrating tables.

IS 3366 : Specification for pan vibrators.

IS 4656 : Specification for form vibrators for concrete.

IS 456 : Code of practice for plain and reinforced concrete.

IS 1343 : Code of practice for prestressed concrete.

IS 457 : Code of practice for general construction of plain and reinforced concrete for dams and other massive structures.

IS 3370 : Code of practice for concrete structures for the (Parts 1 to 4)storage of Liquids.

IS 3935 : Code of practice for composite construction.

IS 3201 : Criteria for design and construction of precast trusses and purlins.

IS 2751 : Recommended practice for welding of mild steel plain and deformed bars for reinforced construction.

IS 9417 : Recommendations for welding cold worked steel bars for reinforced concrete construction.

IS 2502 : Code of practice for bending and fixing of bars for concrete reinforcement.

IS 3558 : Code of practice for use of immersion vibrators for consolidating concrete.

IS 3414 : Code of practice for design and installation of joints in buildings.

IS 4014 : Code of practice for steel tubular scaffolding.(Parts 1 & 2).

IS 2571 : Code of practice for laying in-situ cement concrete flooring.

IS 3696 : Safety code of scaffolds and ladders.(Parts 1 & 2).

IS 1200 : Methods of measurement of building and civil (Parts 1 to 28) engineering works.

IS 2722 : Specification for portable swing weigh batchers for concrete (single and double bucket type).

IS 2750 : Specification for steel scaffoldings.

General

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The quality of materials and method and control of manufacture and transportation of all concrete work irrespective of mix; whether reinforced or otherwise shall conform to the Specifications as in this tender document. Engineer in Charge shall have the right to inspect the source/s of material/s, the layout and operation of procurement and storage of materials, the concrete batching and mixing equipment, and the quality control system. Such an inspection shall be arranged and the Engineer’s approval obtained, prior to starting of concrete work. Materials for Standard Concrete

The ingredients to be used in the manufacture of concrete shall consist solely of ordinary Portland cement clean water, and admixtures, if specifically called for on drawings or specifications, or due to conditions at site warranting the use of it.

Cement

Unless otherwise specified in the Bill of Quantities or called for by the Engineer, cement shall be ordinary Portland cement in 50 kg. Bags conforming to IS 8ll2 or IS 12269. The use of bulk Cement will be permitted only with the approval of the Engineer Changing of brands or type of cement within the same structure shall be avoided as far as possible. If site condition demand, Sulfate Resisting Cement conforming to IS 12330 may have to used. A certified report attesting to the conformance of the cement to.IS specifications by the cement. Manufacturer’s chemist shall be furnished, to the Engineer, at least seven days prior to use in the works. The contractor shall have to make his own arrangements for the procurement and storage of adequate quantity of cement. Cement in bulk may be stored in bins or silos, which will provide complete protection from dampness, contamination and minimize caking and false set. Cement bags shall be stored in a dry enclosed shed (storage under tarpaulins will not be permitted), well away from ground and so arranged as to provide ready access. Damaged or reclaimed or partly set cement shall not be permitted to be used and shall be removed from the site. The storage bins and storage arrangements shall be such that there is no dead storage. Not more than 12 bags shall be stacked in any tier. The storage arrangement shall be approved by the Engineer. Consignments of cement shall be stored as received and shall be consumed in the order of their delivery. Cement held in storage for a period of ninety (90) days or longer shall be tested. Should, at any time, the Engineer have reasons to consider that any cement is defective, then irrespective of its origin, date of manufacture and/or manufacturer's test certificate, such cement shall be tested. Immediately at Contractor's cost at any approved test laboratory and until the results of such tests are found satisfactory, it shall not be used in any work. The Contractor shall not be entitled to any claim of any nature on this account. Aggregates

1. “Aggregate" in general designates both fine and coarse inert materials used in the manufacture of concrete.

2. "Fine Aggregate" is aggregate most of which passes through 4.75 mm IS sieve. 3. "Coarse Aggregate" is aggregate most of which is retained on 4.75 mm IS sieve.

An fine and coarse aggregates proposed for use in the work shall be subject to the Engineer's approval and after specific materials have been accepted, the source 'of supply of such aterials Shall not be changed without prior approval of the Engineer. Aggregates shall, except. as noted above, consist of natural sands, crushed stone and gravel from a source known to produce' satisfactory aggregate for concrete and shall be chemically inert, strong, hard,

durable against weathering, of limited porosity and free from deleterious materials that may cause corrosion of the reinforcement or may impair the strength and/or durability of concrete. The grading of aggregates shall be such as to produce a dense concrete of specified strength and consistency that will work readily into position without segregation and, shall be based on the "mix design” and preliminary tests on concrete specified later. Sampling and Testing

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Samples of the aggregates for mix design and determination of suitability shall be taken under the supervision of the Engineer and delivery to the laboratory, well in advance of the scheduled placing of concrete. Records of tests, which have been made on proposed aggregates and on concrete made from this source of aggregates shall be furnished, to the Engineer in advance of the work for use in determining aggregate suitability. These tests shall also be done periodically on samples of material actually being used in concreting during course of concreting operations; as directed by the Engineer. The costs of all such tests, sampling, etc., shall be borne by the Contractor. Storage of Aggregates

All coarse and fine aggregates shall be stacked separately in stock piles in the material yard near the work site in bins properly constructed to avoid inter mixing of different aggregates. Contamination with foreign material and earth during storage and while heaping the materials shall be avoided. The aggregate must be of specified quality not only at the time of receiving at site but more so at the time of loading into mixer. Rakers shall be used for lifting the coarse aggregate from bins or stock piles. Coarse aggregate shall be piled in layers not exceeding l.20 metres in height to prevent coning or segregation, each layer shall cover the entire area of the stock pile before succeeding layers are started. Aggregates that have become segregated shall be rejected. Rejected material after remixing may be accepted, if subsequent tests demonstrate conformance with required gradation. Specific Gravity

Aggregates having a specific gravity below 2.6 (saturated surface dry basis) shall not be used without specific permission of the Engineer. Fine Aggregate

Fine aggregate except as noted above, and for other than lightweight concrete shall consist of natural sand conforming to IS 383. The Sand shall be clean, sharp, hard, strong and, durable and shall be free from dust, vegetable substances, adherent coating, clay', alkali, organic matter, mica, salt or other deleterious substances, which can be injurious to the setting qualities/strength / durability of concrete. i Screening and Washing Sand shall be prepared for use by such screening or washing, or both, as necessary to remove all objectionable foreign matter while separating the sand grains to the required size fractions. ii Foreign Material Limitations

The percentages of deleterious substances in sand delivered to the mixer shall not exceed the following as shown in Table 1.

Table 1: Percentage of Deleterious Substances in the Sand

Foreign Material Percent by weight

Uncrushed Crushed

Material finer than 75 micron IS sieve 3.00 15.00

Shale 1.00 -

Coal and lignite 1.00 1.00

Clay lumps 1.00 1.00

Total of all above substances including items (i) to (iv) for uncrushed sand and items (iii) and (iv) for crushed sand.

5.00 2.00

iii Grading

Unless otherwise directed or approved, the grading of sand shall be within the limits indicated here under in Table 2.

Table 2: Percentage Passing (Grading of Sand)

IS Sieve Grading Grading Grading Grading

Designation Zone I Zone II Zone III Zone IV

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10mm 100 100 100 100

4.75 mm 90-100 90-100 90-100 95-100

1.18mm 30- 70 55- 90 75-100 90-100

600 micron 15- 34 35- 59 60- 79 80-100

300 micron 5- 20 s- 30 12- 40 15- 50

150 micron 0- 10 0- 10 0- 10 0- 15

Where the grading falls outside the limits of any particular grading zone of sieves, other than 600 micron IS sieve, by total amount not exceeding 5 percent, it shall be regarded as falling within that grading zone. This tolerance shall not be applied to percentage passing the 600 micron IS sieve or to percentage passing any other sieve size on the coarser limit of Grading Zone I or the finer limit of Grading Zone IV. Fine aggregates conforming to Grading Zone IV shall be used unless mix designs and preliminary tests have shown its unsuitability for producing concrete of specified strength and workability. iv Fineness Modulus

The sand shall have a fineness modulus of not less than 2.2 or more than 4.2. The-fineness modulus is determined by adding the cumulative percentages. retained on the following IS sieve sizes (4.75 mm. 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron) and dividing the sum by 100.

Coarse Aggregate

Coarse aggregate for concrete, except noted above and for other than lightweight concrete shall conform to IS 383. This shall consist of natural or crushed stone and gravel, and shall be clean, and free from elongated, flaky or laminated pieces, adhering coatings, clay lumps, coal residue, clinkers, slag, alkali, mica, organic, matter or other deleterious matter. A) Screening and Washing

Natural gravel and crushed rock shall be screened and or washed for the removal of dirt or dust coating, if so demanded by the Engineer. B) Grading

Coarse aggregate shall be either in single size or graded. In both cases, the grading shall be within the following limits as shown in Table 3.

Table 3 : Grading of Coarse Aggregates

IS Sieve Designation

Percentage passing for single sized aggregate of nominal size

Percentage passing for graded aggregate of nominal size

63 mm 40

mm 20 mm 16 mm

12.5 mm

10 mm 40 mm 20 mm 16 mm 12.5 mm

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)

80 mm 100 - - - - - 100 - - -

63 mm 85 to 100

100 - - - - - - - -

40 mm 0 to 30 85 to 100

100 - - - 95 to 100

100 - -

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20 mm 0 to 5 0 to 20 85 to 100

100 - - 30 to 70 95 to 100 100 100

16 mm - - - 85 to 100

100 - - - 90 to 100

-

12.5 mm - - - - 85 to 100

100 - - - 90 to 100

10 mm 0 to 5 0 to 5 0 to 20 0 to 30 0 to 45 85 to 100

10 to 35 22 to 55 30 to 70 40 to 85

4.75 mm - - 0 to 5 0 to 5 0 to 10 0 to 20 0 to 5 0 to 10 0 to 10 0 to 10

2.36 - - - - - 0 to 5 - - - -

The pieces shall be conical in shape and shall have granular or crystalline surfaces. Friable flaky and laminated pieces, mica and shale, if present, shall be only in such quantities that will not, in the opinion of the Engineer; affect adversely the strength and/or durability of concrete. The maximum size of coarse aggregate shall be 40 mm for M15 to M30 concrete or as directed by the Engineer or specified otherwise. The maximum size specified above, but in no case greater then ¼ of the minimum thickness of the member, provided that the concrete can be placed without difficulty so as to surround all reinforcement thoroughly and fill the corners of the form. Plums above 160 mm and up to any reasonable size can be used in plain mass concrete work of large dimensions up to a maximum limit of 20% by volume of concrete when specifically approved by the Engineer. For heavily reinforced concrete members, the nominal maximum size of the aggregate shall be 5 mm less than the minimum clear distance between the reinforcing main bars or 5 mm less than the minimum cover to the reinforcement whichever is smaller. The amount of fine particles occurring in the free state or as loose adherent shall not exceed 1% when determined by laboratory sedimentation tests as per IS 2386. After 24 hours' immersion in water. A previously dried sample shall not have gained more than 10% of its oven dry weight in air, as determined by IS 2386. C) Foreign Material Limitations

The percentage of deleterious substances in the aggregate delivered to the mixer shall not exceed the following as shown in Table 4.

Table 4 : Percentage of Deleterious Substances in the Aggregate

Foreign Material Percent by weight

Uncrushed Crushed

Material finer than 75 micron IS sieve 3.00 3.00

Coal and lignite 1.00 1.00

Clay lumps 1.00 1.00

Soft fragments 3.00 -

Total of all above substances 5.00 5.00 Water

Water used for washing, mixing and curing shall be free from injurious amounts of deleterious materials. Potable waters are generally satisfactory for mixing and curing concrete. In cease of doubt, the suitability of water for making concrete shall be ascertained by the compressive strength and initial setting time test specified in IS 456. The sample of Water taken for testing

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shall be typical of the water proposed to be, used for concreting, due account being paid to' seasonal variation. The sample shall not receive any treatment before testing other than that envisaged in the regular supply of water, proposed for use in concrete. The sample shall be stored in a clean container previously rinsed out with similar water. Average 28 day compressive strength of at least three 15 cm concrete cubes prepared with water proposed to be used shall not be less than 90% of the average strength of three similar concrete cubes prepared with distil1ed water. The cubes shall be prepared, cured and tested in accordance with the requirements of IS 516. The initial setting time of test block made with the appropriate test cement and the water proposed to be used shall not be less than 30 minutes and shall not differ by more than 30 minutes from the initial setting time of control test blocks prepared with the appropriate test cement and distilled water. The test blocks shall be prepared and tested in accordance with the requirements of IS 4031. Where water can be shown to contain an excess of acid, alkali, sugar or salt, the Engineer may refuse to permit its use. As a guide, the following concentrations represent the maximum permissible values: i To neutralize 200 ml. sample of water, using Phenolphthalein as indicator it should not require more than 2 ml. of 0.1 Normal NaOH. The details of test shall be as given in IS 3025. ii To neutralize 200 ml. sample of water, using methyl orange as an indicator, it should not

require more than 10 ml. of 0.1 Normal HCl. The details of test shall be as given in IS 3025. iii Percentage of solids, -when tested in - accordance with the method indicated below, shall

not exceed the following as indicated in the following Table 5.

Table 5: Percentage of Solids & Methods of Tests

Solids Percent Method of Test (Ref. Clause in IS 3025)

Organic 0.02 10 and 11(Organic solids total solids minus ignited residue)

Inorganic 0.30 11 (ignited residue)

Sulphates 0.05 20

Alkali Chlorides (asCl ) 0.20 24

Suspended matter 0.20

iv The pH value of water shall not generally be less than 6.

Standard Concrete

All concrete in the works shall be "Controlled concrete" as defined in IS 456, except for M10 for which nominal mix concrete shall be used. Whether reinforced or otherwise, all concrete works to be carried out under this specification shall be in grades as designated in the following Table 6.

Table 6 : Compressive Strength of Concrete

Grade of Concrete

Minimum Compressive Strength At 7 Days (N/mm2)

Specified Characteristic Compressive Strength At 28 Days (N/mm2)

30 20 30 25 17 25 20 13.5 20

15 10 15 10 7 10

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It shall be very clearly understood that whenever the grade of concrete such as M20, M25, etc. is specified, it shall be the Contractor's responsibility to ensure that specified crushing strength stipulated for the respective grade of concrete is obtained at works. Minimum cement content shall be as under in Table 7, irrespective of the size of aggregate used, for all structures.

Table 7: Minimum cement Content for Concrete

Grade of Concrete Minimum Cement Content (Kg/m3)

M15 - 240

M20 - 300

M25 - 300

M30 - 320

The minimum cement content stipulated above shall be adopted irrespective of whether the Contractor achieves the desired strength with less quality of cement. The Contractor’s quoted rates for concrete shall provide for the above eventuality and nothing extra shall become payable to the Contractor on this account. Even in the case where the quantity of cement required is higher than that specified above, nothing extra shall become payable to the Contractor. Mix Design

i General

This is to investigate the grading of aggregates water-cement ratio, and the quantity of cement required to give desirable workability and the characteristic compressive strength not less than as given in IS 456. The proportions of the mix shall be determined by weight. Adjustment of aggregate proportions due to moisture present in the aggregate shall be made. Mix design shall be done as per the recommended procedure laid down in IS 10262. Whenever there is a change in water-cement ratio or workability or the source of aggregates and/or cement, preliminary tests shall be respected to determine the revised proportions of the mix to suit the altered conditions. While designing mix proportions, over-wet mixes shall always be avoided. While fixing the value for water cement ratio for preliminary mixes, assistance shall be derived from Fig.2 of IS 10262 showing the relationship between the 28-day compressive strengths of concrete mixes with different water-cement ratios and the 28 day compressive strength of cement tested in accordance with IS 4031. ii Preliminary Test

Test specimens shall be prepared with at least two different water cement ratios for each class of concrete, consistent with workability required for the nature of the work. The materials and proportions used in making preliminary tests shall be similar in all respects to those to be actually employed in the works as the object of these tests is to determine the proportions of cement, aggregates and water necessary to produce concrete of required consistency and to give the specified strength. It will be the Contractor’s sole responsibility to carry out these tests and he shall therefore furnish to the Engineer a statement of proportions proposed to be used for the various concrete mixes. For preliminary tests, the following procedure shall be followed: Materials shall be brought to the room temperature and all materials shall be in a dry condition. The quantities of water, cement and aggregates for each batch shall be determined weight to an accuracy of 1 part in 1000 parts. iii Mixing Concrete

It shall be done by hand or in a small batch mixer as per IS 516 in such a manner as to avoid loss of water. The cement and fine aggregate shall first be mixed dry until the mixture is uniform in color. The coarse aggregate shall than be added, mixed and water added and the whole batch mixed thoroughly for a period of not less than two minutes until the resulting concrete is uniform in appearance. Each batch of the desired number of test specimens.

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iv Consistency

The consistency of each batch of concrete shall be measured immediately after mixing, by the lump test in accordance with IS 1199. If in the slump test, care is taken to ensure that no water or other material is lost, the material used for the slump test may be remixed with the remainder of the concrete for making the specimen test cubes. The period of re-mixing shall be as short as possible yet sufficient to produce a homogeneous mass. v Size of Test Cubes

Compression strength tests of concrete cubes shall be made as per IS 516 on 15 cm cubes. Each mould shall be provided with a metal base plate having a plane surface so as to support the mould during filling without leakage. The base plate shall be preferably attached to the mould by spring or screws. The parts of mould when assembled shall be positively and rigidly held together. Before placing concrete, the mould and base plate shall be cleaned and oiled. The dimensions and internal faces of the mould shall be accurate within the following limits: Height and distance between the opposite faces of the -mould shall be of specified size + 0.2 mm The angle between the adjacent internal faces and between, internal faces and top and bottom plates of mould shall be 90+0.5 degrees. The internal faces of the mould shall be plane surfaces with a permissible variation of 0.03 mm. vi Compacting

Concrete test cubes shall be moulded by placing fresh concrete in the mould and compacted as specified in IS 516. vii Curing

Curing shall be as specified in IS 516. The cubes shall be kept in moist air of at least 99% relative humidity at a temperature of 270C + 20C for 24 hours +1/2 hour from time of adding water to the dry ingredients. Thereafter they shall be removed from the moulds and kept immersed in clean, fresh water, and kept at 270C + 20C temperature until required for test. Curing water shall be renewed every seven days. A record of maximum and minimum temperatures at the place of storage of the cubes shall be maintained during the period they remain in storage. viii Trial Mixes The mix proportion for a given grade of concrete, calculated, in accordance with IS 10262, shall be checked by means of trial batches. The quantity of materials of each trial shall be sufficient for at least three cube test specimens and for carrying out workability test according to IS 1199. The procedure for trial mixes shall be as per Clause 4 and APPENDIX D of IS 10262. Proportioning, Consistency, Batching and Mixing of Concrete i Proportioning a) Aggregate

The proportions which shall be decided by conducting preliminary tests shall be by weight. These proportions of cement and fine and coarse aggregates shall be maintained during subsequent concrete batching by means of weights batchers conforming to IS2722 capable of controlling the weights within one percent of the desired value. Except where it can be shown to the satisfaction of the Engineer that the supply of properly graded aggregates of uniform, quality can be maintained over the period of work, the grading of aggregates shall be controlled by obtaining the coarse aggregate in different size and blending them in the right proportions. The different sizes shall be stocked in separate stock piles. The grading of coarse and fine aggregates shall be checked as possible, as determined by the Engineer, to ensure maintaining of grading in accordance with the samples used in preliminary mix design. The material shall be stock piled well in advance of use.

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b) Cement

Cement shall be measured by weight. c) Water

Only such quantity of water shall be added to the cement and aggregate in the concrete mix-as to ensure dense concrete, specified surface finish, and satisfactory workability, consistent with the strength stipulated for each class of concrete. The water added to the mix shall be such as not to cause segregation of materials or the collection of excessive free water on the surface or the concrete. d) Definition of Water-Cement Ratio

The water-cement (W-C) ratio is defined as the weight of water in the mix (including the surface moisture or the aggregates) divided by the weight of cement in the mix. e) Water-Cement Ratio

The actual water-cement ratio to be adopted shall be determined in each instance by the Contractor and approved by the Engineer. f) Proportioning Water Cement Ratio

The W-C ratio specified for use by the Engineer shall be maintained. The Contractor shall determine the water content of the aggregates as frequently as directed by the Engineer as the work progresses and as specified in IS-2386 (Part 3) and the amount of mixing water added at the mixer shall be adjusted as directed by the Engineer so as to maintain the specified W-C ratio. To allow for the variation in weight of aggregates due to variation in their moisture content, suitable adjustments in the weights of aggregates shall also be made. ii Consistency and Slump

Concrete shall be of a consistency and workability suitable for the conditions of the job. After the amount of water required is determined, the consistency of the mix shall be maintained throughout the progress of the corresponding parts of the work and approved tests: e.g. slump tests, compacting factor tests, in accordance with IS 1199, shall be conducted from time to time to ensure the maintenance of such consistency. The following Table 8 gives a range of slumps which shall generally be used for various types of construction unless otherwise instructed by the Engineer.

Table 8 : Slumps for Various Types of Construction

Item of Work Slump in millimeters

Maximum) (Minimum)

Reinforced foundation walls and footings 75 25

Plain footings and substructure walls 75 25

T.G. and massive foundations 50 25

Slabs, beams and reinforced walls 100 25

Pumps & miscellaneous equipment foundations 75 25

Building columns 100 25

Pavements 50 25

Heavy mass construction 50 25

iii Batching and Mixing of Concrete

The materials and proportions of concrete materials as established by the preliminary tests for the mix designs shall be rigidly followed for all concrete on the project and shall not be changed except when specifically permitted by the Engineer. Concrete shall be produced only by weigh batching the ingredients. The mixer and weigh batchers shall be maintained in clean,

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serviceable condition. The accuracy of weigh batchers shall be periodically checked. They shall be set up level on a firm base and the hopper shall be loaded evenly. The needle shall be adjusted to zero when the hopper is empty. Fine and coarse aggregates shall be weighed separately. Volume batching will not be permitted. However, the Engineer may permit volume batching by subsequent conversion of the weights of the aggregates into their equivalent volumes knowing their bulk densities, only in the case of and less important pours involving concrete of not more than 0.25 cubic meters on days when other pours involving weigh batching are not likely to be taken up. Concrete shall be of strength stipulated in the respective items. All concrete shall be mixed in mechanically operated batch mixers complying with IS: 1791 and of the approved make with suitable provision for correctly controlling the water delivered to the drum. The quantity of the water actually entering the drum shall be checked with the reading of the gauge or valve setting, when starting a job. The tests should be made while the mixer is running. The volume of the mixed material shall not exceed the manufacturer's rated mixer capacity. The batch shall be charged into the mixer so that some water will enter the drum in advance of cement and aggregates. All water shall be in the drum by the end of the first 15 seconds of the specified mixing time. Each batch shall be mixed until the concrete is uniform in colour, for a minimum period of 2 minutes after all the materials and water are in the drum. The entire contents of the drum shall be discharged in one operation before the raw materials for the succeeding batches are fed into the drum. Each time the work stops, the mixer shall be cleaned out and when next commencing the mixing, the first batch shall have 10% additional cement, to allow for sticking in the drum. Whenever it is found necessary to produce, concrete of quantity less than 5 cum in a day, the contractor shall take prior approval of the Engineer/Consultant for onsite production of concrete for miscellaneous works.

Preparation prior to Concrete Placement i. Final Inspection and approval

Before the concrete is actually placed in position, the insides of the formwork shall be inspected to see that they have been cleaned and oiled. Temporary openings shall be provided to facilitate inspection especially of bottoms of columns and wall forms, to permit removal of saw dust, wood shavings, binding wire, rubbish dirt etc. Openings shall be placed or holes drilled so that these materials and water can be removed easily. Such openings/holes shall be suitably plugged later. The various trades shall be permitted ample time to install drainage and plumbing lines, floor and trench drains, conduits, hangers, anchors, inserts, sleeves, bolts, frames and other miscellaneous embedment’s to be provided in the concrete as indicated on the drawings or as is necessary for the proper execution of the work. The Contractor shall co-operate fully with all such agencies and shall permit the use of scaffolding, from work, etc., by other trades at no extra cost. All embedded parts, inserts, etc, shall be correctly positioned and securely held in the forms to prevent displacement during depositing and vibrating of concrete. All anchor bolts shall be positioned and kept in place with the help of properly manufactured templates unless specifically waived in writing by the Engineer. The use of all such templates, fixtures, etc. shall be deemed to be included in the rates. Slots, openings, holes, pockets, etc., shall be provided in the concrete work in the positions indicated in the drawings or as directed by the Engineer. Reinforcement and other items to be embedded in concrete shall have clean surfaces that will not impair bond. Prior to concrete placement, all work shall be inspected and approved by the Engineer and if found unsatisfactory, concrete shall not be poured until after all defects have been corrected at the Contractor's cost. Approval by the Engineer of any and all materials and work as required herein shall not relieve the Contractor from his obligation to produce finished concrete in accordance with the drawings and specifications.

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ii. Rain or Wash Water

No concrete shall be placed in wet weather or on a water-covered surface. Any concrete that has been washed by heavy rains shall be entirely removed, if there is any sign of cement and sand having been washed away from the concrete mixture. To guard against damage, which may be caused by rains, the works shall be covered with tarpaulins immediately after the concrete has been placed and compacted before leaving the work unattended. Any water accumulating on the surface of the newly placed concrete shall be removed by approved means and no further concrete shall be placed thereon until such water is removed. To avoid flow of water over/around freshly placed concrete, suitable drains and sumps shall be provided. iii. Bonding Mortar

Immediately before concrete placement begins, prepared surfaces except formwork, which will come in contact with the concrete to be placed, shall be covered with a bonding to mortar as specified in this specifications. Procedure for Placing of Concrete i Engineer's Approval of Equipment & Methods

Before any concrete is placed, the entire placing program, consisting of equipment, layout, proposed procedures and methods shall be submitted to Engineer for approval if so demanded by Engineer and no concrete shall be placed until Engineer's approval has been received. Equipment for conveying concrete shall be of such size and design as to ensure a practically continuous flow of concrete during depositing without segregation of materials, considering the size of the job and placement location. ii Time Interval between Mixing and Placing

Concrete shall be placed in its final position before the cement reaches its initial set and concrete shall normally be compacted in its final position within thirty minutes of leaving the mixer, and once compacted it shall not be disturbed. iii Avoiding Segregation

Concrete shall, in all cases, be deposited as nearly as practicable directly in its final position, and shall not be rehandled or caused or to flow in a manner which will cause segregation, loss of materials, displacement of reinforcement, shuttering of embedded inserts or impair is strength. For locations where direct placement is not possible, and in narrow forms, Contractor shall provide suitable drop and "Elephants Trunks" to confine the movement of concrete. Special care shall be taken when concrete is dropped from a height, especially if reinforcement is in the way, particularly in columns and thin walls. iv Placing by Manual Labour

Except when otherwise approved by Engineer, concrete shall be placed in the shuttering by shovels or other approved implements, and shall not be dropped from a height more than 1.0 M or handled in a manner, which will cause segregation v Placing by Mechanical Equipment

The following specification shall apply when placing of concrete by use of mechanical equipment is specifically called for while inviting bids or is warranted considering the nature of work involved. The control of placing shall begin at the mixer discharge. Concrete shall be discharged by a vertical drop into the middle of the bucket or hopper and this principle of a vertical discharge of concrete shall be adhered to throughout all stages of delivery until the concrete comes to rest in its final position. a) Type of Buckets

Control-bottom-dump buckets of a type that provides for positive regulation of the amount and rate of deposition of concrete in all dumping positions shall be employed.

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b) Operation of Bucket

In placing concrete in large open areas, the bucket shall be spotted directly over the position designated and then lowered for dumping. The open bucket shall clear the concrete already in place and the height of drop shall not exceed 1.00M.The bucket shall he opened slowly to avoid high vertical bounce. Dumping of buckets on the swing or in any manner which results in separation of ingredients or disturbance of previously placed concrete will not be permitted. vi Placement in Restricted Forms

Concrete placed in restricted forms by barrows, buggies, cars, short chutes or hand shoveling shall be subject to the requirement for vertical delivery of limited height to avoid segregation and shall be deposited as nearly as practicable in its final position. vii Chuting

Where it is necessary to use transfer chutes, specific approval of Engineer must be obtained to type, length, slopes, baffles, vertical terminals and timing of operations. These shall be so arranged that an almost continuous flow of concrete is obtained at the discharge end without segregation. To allow for the loss of mortar against the sides of the chutes, the first mixes shall have less coarse aggregate. During cleaning of chutes, the wastewater shall be kept clear of the forms. Concrete shall not be permitted to fall from the end of the chutes by more than 1.0 M. Chutes when approved for use, shall have slope not flatter than 1 vertical: 2 horizontal, and not steeper than 1 vertical: 1 horizontal. Chutes shall be metal or metal lined and of rounded cross section the slopes of all chute sections shall be approximately the same. The discharge end of the chutes shall be maintained above the surface of the concrete in the forms. viii Placing by Pumping/Pneumatic Placers

Concrete may be conveyed and placed by mechanically operated equipment e.g. pumps or pneumatic placers only with the written permission of Engineer. The slump shall be held to the minimum necessary for conveying concrete by this method. No extra payment will be made for the pumps or pneumatic placers required for concreting. When pumping is adopted, before pumping of concrete is started the pipeline shall be lubricated with one or two batches of mortar composed of one part cement and two parts sand. The concrete mix shall be specially designed to suit pumping. Care shall be taken to avoid stoppages in work once pumping has started. When pneumatic placer is used, the manufacture's advice on layout of pipeline shall be followed to avoid blockages and excessive wear. Restraint shall be provided at the discharge box to cater for the reaction at this end. Manufacturer's advice shall be followed regarding concrete quality and all other related matters when pumping/pneumatic placing equipment are used. ix Concrete in Layers

Concreting, once started, shall be continuous until the pour is completed. Concrete shall be placed in successive horizontal layers of uniform thickness ranging from 15 cm to 90 cm directed by Engineer. These shall be placed as rapidly practicable to prevent the formation of cold joints or planes of weakness between each succeeding layer within the pour. The thickness of each layer shall be such that it can be deposited before the previous layer has stiffened. The bucket loads or other units of deposit shall be spotted progressively along the face of the layer with such overlap as will facilitate spreading the layer to uniform depth and texture with a minimum of shoveling. Any tendency to segregation shall be corrected by shoveling stones into mortar rather than mortar on to stones. Such a condition shall be corrected by redesign of mix or other means, as directed by Engineer. x Bedding of Layers

The top surface of each pour and bedding planes shall be approximately horizontal unless otherwise instructed.

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xi Compaction

Concrete shall be compacted during placing, with approved vibrating equipment until the concrete has been consolidated to the maximum practicable density, is free of pockets of coarse aggregate and fits tightly against all form surfaces, reinforcement and embedded fixtures. Particular care shall be taken to ensure that all concrete placed against the form faces and into corners of forms or against hardened concrete at joints is free from voids or cavities. The use of vibrators shall be consistent with the concrete mix and caution exercised not to over vibrate the concrete to the point that segregation results. a) Type of Vibrators

Vibrators shall conform to IS specifications. Type of vibrator to be used shall depend on the structure where concrete is to be placed. Shutter vibrators to be effective, shall be firmly secured to the formwork which must be sufficiently rigid to transmit the vibration and strong enough not to be damaged by it. Immersion vibrators shall have "no load" frequency, amplitude and acceleration as per IS 2505 depending on the size of the vibrator. Immersion vibrators in sufficient numbers and each of adequate size shall be used to properly consolidate all concrete Tapping or external vibrating of forms by hand tools or immersion vibrators will not be permitted. b) Use of Vibrators

The exact manner of application and the most suitable machines for the purpose must be carefully considered and operated by experienced men. Immersion vibrators shall be inserted vertically at points not more than 450 mm apart and withdrawn when air bubbles cease to come to the surface. Immersion vibrators shall be withdrawn very slowly. In no case shall immersion vibrators be used to transport concrete inside the forms. Particular attention shall be paid to vibrations at the top of a lift e.g. in a column or wall. c) Melding Successive Batches

When placing concrete in layers, which are advancing horizontally as the work progresses, great care shall be exercised to ensure adequate vibration, blending and melding of the concrete between the succeeding layers. d) Penetration of Vibrator

The immersion vibrator shall penetrate the layer being placed and also penetrate the layer below while the under layer is still plastic to ensure good bond and homogeneity between the two layers and prevent the formation of cold joints. e) Vibrating against Reinforcement

Care shall be taken to prevent contact of immersion vibrators against reinforcement steel. Immersion vibrators shall not be allowed to come in contact with reinforcement steel after start of initial set. They shall also not be allowed to come in contact with forms or finished surfaces. f) Use of Form Attached Vibrators

Form attached vibrators shall be used only site specific authorization of Engineer. g) Use of Surface Vibrators

The use of surface vibrators will not be permitted under normal conditions. However, for thin slabs, such as highways, runways and similar construction, surface vibration by specially designed vibrators may be permitted, upon approval of Engineer. h) Stone Pockets and Mortar Pondages

The formation of stone pockets or mortar pondages in corners and against faces of forms shall not be permitted. Should these occur, they shall be dug out, reformed and refilled to sufficient depth and shape for thorough bonding, as directed by Engineer.

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xii Placement Interval

Except when placing with slip forms, each placement of concrete in multiple lift work shall be allowed to set for at least 24 hours after the final set of concrete and before the start of a subsequent placement. xiii Special Provision in Placing

When placing concrete in walls with openings, in floors of integral slab and beam construction and other similar conditions, the placing shall stop when the concrete reaches the top of the opening in walls or bottom horizontal surface of the slab, as the case may be. Placing shall be resumed before the concrete in place takes initial set, but not until it has had time to settle as determined by the Engineer. xiv Placing Concrete through Reinforcing Steel

When placing concrete through reinforcing steel, care shall be taken to prevent segregation of the coarse aggregate. Where the congestion of steel makes placing difficult, it may be necessary to temporarily move the top steel aside to get proper placement and restore reinforcing steel to design position. xv Bleeding

Bleeding or free water on top of concrete being deposited into the forms, shall because to stop the concrete pour and the conditions causing this defect corrected before any further concreting is resumed. Construction Joints

A construction joint is defined as a joint in the concrete introduced for convenience in construction at which special measures are taken to achieve subsequent continuity without provision for further relative movement. The Contractor shall submit to the Engineer for his approval, as soon as Practicable after the acceptance of his Tender and not less than three weeks before the commencement of concreting, drawings showing his proposals for placing concrete on which the position of all construction joints and lifts shall be shown. No concreting shall be started until the Engineer has approved the method of placing, the positions and form of the construction joints and lifts. The construction joints shall be so located as not to impair the strength of the structure. Rebates, keys or notches shall be formed and water stops inserted as the Engineer may require. The position of construction joints and the size of the formwork panels shall be so coordinated that where possible the line of any construction joints coincides with the line of a formwork joint and that in any case all construction joint lines and formwork joint lines appear as a regular and uniform series. For all exposed horizontal joints and purposely inclined joints, a uniform joint shall be formed with a batten of approved dimensions to give a straight and neat joint line. Concrete placed to form the face of a construction joint shall have a laitance removed and the aggregate exposed prior to the placing of fresh concrete. The laitance shall wherever practicable be removed by spraying the concrete surface with water under pressure and brushing while the concrete is still green. Where the laitance cannot be removed while the concrete is still green, the whole of the concrete surface forming part of the joint shall be hacked to expose the aggregate. Where aggregate is damaged during hacking it shall be removed from the concrete surface by further hacking. All loose matter shall be removed and the exposed surface thoroughly cleaned by wire brushing, air blasting or washing, leaving the surface clean and damp Immediately before fresh concrete is placed, a 12 mm thick layer of sand/cement mortar mixed in the same proportions as in the concrete shall be spread in the horizontal face of the construction joint. Treatment of Construction Joints on Resuming Concreting

A drier mix shall be used for the top lift of horizontal pours to avoid laitance. All laitance and loose stones shall be thoroughly and carefully removed by wire brushing/hacking and surface washed. Just before concreting is resumed, the roughened joint surface shall be thoroughly

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cleaned and loose matter removed and then treated with a thin layer of cement grout of proportion specified by Engineer and worked well into the surface. The new concrete shall be well worked against the prepared face before the grout mortar sets. Special care shall be taken to obtain thorough compaction and to avoid segregation of the concrete along the joint plane. Curing, Protecting, Repairing & Finishing i Curing

All concrete shall be cured by keeping it continuously damp for the period of time required for complete hydration and hardening to take place. Preference shall be given to the use of continuous sprays, or ponded water, continuously saturated covering of sacking, canvas, hessian or other absorbent materials, or approved effective curing compounds applied with spraying equipment capable of producing a smooth, even-textured coat. Extra precautions shall be exercised in curing concrete during cold and hot weather as outlined hereinafter. The quality of curing water shall be the same as that used for mixing concrete. Certain types of finish or preparation for overlaying concrete must be done at certain stages of the curing process and special treatment may be required for specific concrete surface finish. Curing of concrete’s made of high alumina cement and supersulphated cement shall be carried out as directed by Engineer. a) Curing with Water

Fresh concrete shall be kept continuously wet a minimum period of 10 days from the date of placing of concrete, following a lapse of 12 to 14 hours after laying concrete. The curing of horizontal surfaces exposed to the drying winds shall however begin as soon as the concrete has hardened. Water shall be applied to formed surfaces immediately upon removal of forms. Quantity of water applied shall be controlled so as to prevent erosion of freshly placed concrete. b) Continuous Spraying

Curing shall be assured by use of an ample water supply under pressure in pipes, with all necessary appliances of hose, sprinklers and spraying devices. Continuous fine mist spraying or sprinkling shall be used, unless otherwise specified or approved by Engineer. c) Alternate Curing Methods

Whenever, in the judgment of Engineer, it may be necessary to omit the continuous spray methods, a covering of clean sand or other approved means such as wet gunny bags which will prevent losses of moisture from the concrete, may be used. No type of covering will be approved which would stain or damage the concrete during or after the curing period. Covering shall be kept continuously wet during the curing period. For curing of concrete in pavements, sidewalks, floors, flat roofs or other level surfaces, the ponding methods of curing are preferred. The methods of containing the ponded water shall be approved by Engineer. Special attention shall be given to edges and corners of the slabs to ensure proper protection to these areas. The ponded areas shall be kept continuously filled with water during the curing period. d) Curing Compounds

Surface coating type-curing compounds shall be used only by special permission of Engineer. Curing Compounds shall be liquid type white pigmented conforming to U.S. Bureau of Reclamation Specification. No curing compound shall be used on surfaces where future blending with concrete, water or acid proof membrane, or painting is specified. e) Curing Equipment

All equipment and materials required for curing shall be on hand and ready for use before concrete is placed.

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ii Protecting Fresh Concrete

Fresh concrete shall be protected from the elements, from defacements and damage due to construction operations by leaving forms in place for an ample period as specified later in these specifications. Newly placed concrete shall be protected by approved means such as tarpaulins from rain, sun and winds. Steps as approved by Engineer shall also be taken to protect immature concrete from damage by debris excessive loading, vibration, abrasion or contact with other materials, etc., that may impair the strength and/or durability of the concrete. Workmen shall be warned against and prevented from disturbing green concrete during its setting period. If it is necessary that workmen enter the area of freshly placed concrete, Engineer may require that bridges be placed over the area. iii Repair and Replacement of Unsatisfactory Concrete

Immediately after the shuttering is removed, the surface of concrete shall be very carefully gone over and all defective areas called to the attention of Engineer who may permit patching of the defective areas or also reject the concrete unit either partially or in its entirety. Rejected concrete shall be removed and replaced by Contractor at no additional expense to Council. Holes left by form bolts, etc., shall be filled up and made good with mortar composed of one part of cement to one and half parts of sand passing through 2.36 mm IS sieve after removing any loose stones adhering to the concrete. Mortar filling shall be struck off flush at the face of the concrete. Concrete surfaces shall be finished as described under the particular items of work. Superficial honeycombed surfaces and rough patches shall be similarly made good immediately after removal of shuttering, in the presence of Engineer and superficial water and air holes shall be filled in. The mortar shall be well worked into the surface with a wooden float. Excess water shall be avoided. Unless instructed otherwise by Engineer, the surface of the exposed concrete placed against shuttering shall be rubbed down immediately on removal of shuttering to remove fine or other irregularities, care being taken to avoid damaging the surface. Surface irregularities shall be removed by grinding. If reinforcement is exposed or the honeycombing occurs at vulnerable positions e.g. ends of beams or columns it may be necessary to cut out the member completely or in part and reconstruct. The decision of the Engineer shall be final in this regard. If only patching is necessary, the defective concrete shall be cut out till solid concrete is reached (or to a minimum depth of 25 mm) the edges being cut perpendicular to the affected surface or with small undercut if possible. Anchors, tees or dovetail slots shall be provided whenever necessary to attach the new concrete securely in place. An area extending several centimeters beyond the edges and the surfaces of the prepared voids shall be saturated with water for 24 hours immediately before the patching material is placed. a) Methods of Repair

Small size holes having surface dimensions about equal to the depth of the hole, holes left after removal of form bolts, grout insert holes and slots cut for repair of cracks shall be repaired as follows. The hole to be patched shall be roughened and thoroughly soaked with clean water until absorption stops. A 5 mm thick layer of grout of equal parts of cement and sand shall be well brushed into the surface to be patched, followed immediately by the patching concrete which shall be well consolidated with a wooden float and left slightly proud of the surrounding surface. The concrete patch shall be built up in 10 mm thick layers. After an hour or more, depending upon weather conditions, it shall be worked off flush with a wooden float and a smooth finish obtained by wiping with hessian. A steel trowel shall be used for this purpose. The mix for patching shall be of the same materials and in the same proportion as that used in the concrete being repaired, although some reduction in the maximum size of the coarse aggregates may be necessary and the mix shall be kept as dry as possible. Mortar filling by air pressure (guniting) shall be used for repair of areas too large and/or too shallow for patching with mortar. Patched surfaces shall be given a final treatment to match the colour and texture of the surrounding concrete. White cement shall be substituted for ordinary cement, if so directed by Engineer, to match the shade of the patch with the original concrete. b) Curing of Patched Work

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The patched area shall be covered immediately with an approved non-staining, water saturated material such as gunny bags, which shall be kept continuously wet and protected against sun and wind for a period of 24 hours. Thereafter, the patched area shall be kept wet continuously by a fine spray, or sprinkling for not less than 10 days. c) Approval by Engineer

All materials, procedures and operations used in the repair of concrete and also the finished repair work shall be subject to the approval of Engineer. All fillings shall be tightly bonded to the concrete and shall be sound, free from shrinkage cracks after the fillings have been cured and dried. iv Finishing

The type of finish for formed concrete surfaces shall be as follows, unless otherwise specified by the Engineer. For surfaces against which backfill or concrete is to be placed, no treatment is required except repair of defective areas. For surfaces below grade, which will receive waterproofing treatment, the concrete shall be free of surface irregularities, which would interfere with proper application of the waterproofing material, which is specified for use. Unless specified, surfaces which will be exposed when the structure is in service shall receive no special finish, except repair of damaged or defective concrete, removal of fins and abrupt irregularities, filling of holes left by form ties and rods and clean up of loose or adhering debris. Surfaces which will be exposed to the weather and which would normally be level shall be stopped for drainage. Unless the drawing specifies a horizontal surface or shows the slope required, the tops of narrow surface such as stair treads, walls, curbs and parapets shall be sloped across the width approximately 1 in 30. Broader surfaces such as walkways, roads, parking areas and platforms shall be sloped about 1 in 50. Surfaces that will be covered by backfill or concrete, subfloors to be covered with concrete topping, terrazzo or quarry tile, and similar surfaces shall be smooth screeded and leveled to produce even surfaces. Surface irregularities shall not exceed 6 mm. Surfaces which will not be covered by backfill, concrete or tile toppings such as outside decks, floors of galleries and sumps, parapets, gutters, side-walks, floors and slabs, shall be consolidated, screeded and floated. Excess water and laitance shall be removed before final finishing. Floating may be done with hand or power tools and started as soon as the screeded surface has attained a stiffness to permit finishing operations and these shall be the minimum required to produce a surface uniform in texture and free from screed marks or other imperfections. Joints and edges shall be tooled as called for on the drawings or as directed by Engineer a) Standard Finish for Exposed Concrete

Exposed concrete shall mean any concrete, other than floors or slabs, exposed to view upon completion of the job. Unless otherwise specified on the drawings, the standard finish for exposed concrete shall be a smooth finish. A smooth finish shall be obtained with the use of lined or plywood forms having smoothed and even surfaces and edges. Panels of forms shall be of uniform size and be as large as practicable and installed with closed joints. Upon removal of forms the joint marks shall be smoothed off and all blemishes, projections, etc., removed leaving the surfaces smooth. b) Integral Cement Concrete Finish

When specified on the drawings an integral cement concrete finish of specified thickness for floors and slabs shall be applied either monolithic or bonded, as specified on the drawings. The surface shall be tested with a straight edge and any high and low spots eliminated. Floating or trowelling of the finish shall be permitted only after all surface water has evaporated. Dry cement or a mixture of dry cement and sand shall not be sprinkled directly on the surface of the cement finish to absorb moisture or to stiffen the mix.

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c) Rubbed Finish

A rubbed finish shall be provided only on exposed concrete surfaces. Upon removal of forms, all fins and other projections on the surfaces shall be carefully removed, offsets leveled and voids and/or damaged sections immediately saturated with water and repaired by filling with a concrete or mortar of the same composition as was used in the surface. The surfaces shall then be thoroughly wetted and rubbed with carborundum or other abrasive. Cement mortar may be used in the rubbing, but the finished surfaces shall not be brush coated with either cement or grout after rubbing. The finished surfaces shall present a uniform and smooth appearance. v Protection

All concrete shall be protected against damage until final acceptance by Engineer/Owner. Reinforcement i Supply

All steel shall be new and procured from original producers. No rerolled steel shall be accepted. The Contractor shall submit to the Engineer the manufacturer’s test certificates for chemical analysis and physical properties of steel reinforcement for each consignment of steel at least seven days prior to delivery at site. The Engineer may order physical and/or chemical tests, for confirmation, on such steel reinforcement when he considers necessary. If such confirmatory tests are found to be unsatisfactory, the reinforcement shall not be used in any work. Random tests on steel supplied by the Contractor may be performed by the Council as per relevant Indian Standards. All costs incidental to such tests shall be at the contractor’s expense. Steel not conforming to specifications shall be rejected. Only new steel shall be delivered to the site and shall be clean, free from grease, oil, paint, dirt, loose mill scale, loose rust, dust, bituminous materials or any other substances that will destroy or reduce the bond. All rods shall be thoroughly cleaned before being fabricated. Pitted and defective rods shall not be used. Preferred make for steel shall be SAIL, TISCO and Jindal or equivalent approved by the Engineer-In-Charge. ii Storage

The reinforcement shall not be kept in direct contact with the ground but stacked on top of an arrangement of timber sleepers or equivalent. If the reinforcing rods have to be stored for a long duration, they shall be coated with cement wash before stacking and/or be kept under cover or stored as directed by the Engineer. Fabricated reinforcement shall be carefully stored to prevent damage, distortion, corrosion and deterioration. iii Quality

Reinforcement shall be TMT deformed bars (Thermo Mechanical Treatment) grade FE-415 as per IS: 1786/1985 with up-to-date amendments. Wire mesh or fabric shall be in accordance with IS: 1566. Substitution of reinforcement will not be permitted except upon written approval form the Engineer.

iv Laps

Laps and splices for reinforcement shall be as shown on the Drawings. Splices in adjacent bars shall be staggered and the locations of all splices, except those specified on the Drawings, shall be approved by the Engineer. The bars shall not be lapped unless the length required exceeds the maximum available lengths of bars at site. v Bending

Reinforcing bars supplied bent or in coils, shall be straightened before they are cut to size. Straightening of bars shall be done in cold and without damaging the bars. This is considered as a part of reinforcement bending fabrication work.

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All bars shall be accurately bent according to the sizes and shapes shown on the detailed working drawings. They shall be bent gradually by machine or other approved means. Reinforcing bars shall not be straightened and rebent in a manner that will make the material inferior; bars containing cracks or splits shall be rejected. They shall be bent cold, except bars of over 25 mm in diameter, which may be bent hot if specifically approved by the Engineer. Bars which depend for their strength on cold working shall not be bent hot. Bars bent hot shall not be treated beyond cherry red colour (not exceeding 8450 C) and after bending shall be allowed to cool slowly without quenching. Bars incorrectly bent shall be used only if the means used for straightening and rebinding such as shall not, in the opinion of the Engineer, injure the material. No reinforcement shall be bent when in position in the work without approval, whether or not it is partially embedded in hardened concrete. Bars having kinks or bends other than those required by design shall not be used. vi Fixing

Reinforcement shall be accurately fixed by any approved means and maintained in the correct position shown in the Drawings by the use of blocks, spacers and chairs, as IS 2502, to prevent displacement during placing and compaction of concrete. Bars intended to be in contact at crossing points shall be securely bound together at all such points with number 16 gauge annealed soft iron wire. The vertical distances required between successive layers of bars in beams or similar members shall be maintained by the provision of mild steel spacer bars at such intervals that the main bars do not perceptibly sag between adjacent spacer bars. vii Cover

Unless indicated otherwise on the Drawings, clear concrete cover for reinforcement (exclusive of plaster or other decorative finish) shall be as follows: a) At each end of reinforcing bar, neither less than 25 mm nor less than twice the diameter of

the bar. b) For a longitudinal reinforcing bar in a column, not less than 40 mm, nor less than the

Diameter of the bar. In case of columns of minimum dimension of 20 cm or under, with reinforcing bars of 12 mm and less in diameter, a cover of 25 mm may be used. c) For longitudinal reinforcing bars in a beam, not less than 25 mm nor less than the Diameter

of the bar. d) For tensile, compressive, shear or other reinforcement in a slab or wall not less than 15 mm, nor less than the diameter of such reinforcement. e) For any other reinforcement not less than 15 mm, nor less than the diameter of such

Reinforcement. f) For footings and other principal structural members in which the concrete is deposited

directly against the ground, cover to the bottom reinforcement shall be 75 mm. If concrete is poured on a layer of lean concrete the bottom cover may be reduced to 50 mm. g) For concrete surfaces exposed to the weather or the ground after removal of forms, such

as retaining walls, grade beams, footing sides and top, etc. not less than 50 mm for bars larger than 16 mm diameter and not less than 40 mm for bars 16 mm diameter or smaller. h) Increased cover thickness shall be provided, as indicated on the Drawings, for Surfaces

exposed to the action of harmful chemicals (or exposed to earth contaminated by such chemicals), acid, alkali, saline, atmosphere, sulphurous smoke, etc. i) For reinforced concrete members, totally or periodically immersed in sea water or Subject

to seawater spray, the cover of concrete shall be 50 mm more than those specified on (a) to (e) above. j) For liquid retaining structures, the minimum cover to all steel shall be 40 mm or the Diameter

of the main bar, whichever is greater. In the presence of sea water and soils and water of corrosive character the cover shall be increased by 10 mm. k) Protection to reinforcement in case of concrete exposed to harmful surroundings may also

be given by providing a dense impermeable concrete with approved protective coatings, as specified on the drawings. In such a case, the extra cover mentioned in (h) and (i) above may be reduced by the Engineer to those shown on the drawings. l) The correct cover shall be maintained by cement mortar cubs or other approved Means.

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Reinforcement for footings, grade beams and slabs on subgrade shall be supported on precast concrete blocks as approved by the Engineer. The use of pebbles or stones shall not be permitted. m) The 28 day crushing strength of cement mortar cubes/precast concrete cover blocks shall

be at least equal to the specified strength of concrete in which these cubes/blocks are embedded. n) The minimum clear distance between reinforcing bars shall be in accordance with IS 456

or as shown in the drawings. viii) Inspection

Erected and secured reinforcement shall be inspected and approved by the Engineer prior to placement of concrete. ix) Welding of Reinforcement

Reinforcement which is specified to be welded shall be welded by any process which conforms with the requirements of IS 2751 or IS 9417 and which the Contractor can demonstrate by bend and tensile tests will ensure that the strength of the parent metal is not reduced and that the weld possesses a strength, not less than that of the parent metal. The welding procedure established by successful test welds shall be maintained and no departure from this procedure shall be permitted. Welds in positions other than those shown on the Drawings shall not be permitted. Tack welding to lightly secure reinforcements in place will be permitted subject to approval of the Engineer’s Representative. x) Supply of Reinforcing Bars

All the steel reinforcements, M.S. bars/high yield strength deformed bars, etc. required for the Works will be supplied by the Contractor. All steel brought on site shall be stored in a proper manner as approved by the Engineer so as to avoid distortion, deterioration and corrosion. Measurement of Reinforcements

Reinforcement and all work in connection therewith shall be valued by measurement of only such items as are provided in the Bill of Quantities. Bar reinforcement shall be measured as the calculated weight of reinforcement detailed on the Drawings or otherwise specified, and for this purpose the weight of reinforcement shall be calculated in accordance with Table below. Reinforcement required in compliance with specified laps of bars shall be included in the weight measured for payment. Fabric reinforcement shall be measured as the net area of fabric laid and laps shall not be measured. In no case shall measurement be made in respect of binding wire, welding, chairs, spacers, waste in cutting, or laps introduced by the Contractor (with the Engineer’s permission). Notwithstanding anything in this Clause, where reinforcement is specified as being included in other measured work (for example, in precast concrete) it shall not be measured for payment.

Diameter of bar in mm Weight in kg / m

6 0.22

8 0.39

10 0.62

12 0.89

16 1.58

20 2.47

25 3.85

32 6.31

36 7.99

40 9.87

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C) General Building Work

Applicable Codes and Specifications

The following codes, standards and specifications are made a part of this specification. All standards, tentative specifications, specifications, codes of practices referred to herein shall be the latest edition including all applicable official amendments and revisions. In case of discrepancy between this Specification and those referred to herein, this Specification shall govern.

IS: 110 : Ready mixed paint, brushing, grey filler, for enamels for use over primers

IS: 269 : Specification for 33 grade ordinary Portland cement

IS 8112 : Specification for 43 grade ordinary Portland cement

IS 12269 : Specification for 53 grade ordinary Portland cement

IS: 280 : Specification for mild steel wire for general engineering purposes

IS: 287 : Recommendations for maximum permissible moisture content of timber used for different purposes

IS: 337 : Varnish, finishing interior

IS: 348 : French polish

IS: 383 : Specification for coarse and fine aggregates from natural sources for concrete

IS: 412 : Expanded metal steel sheets for general purposes

IS: 419 : Specification for putty for use on window frames

IS: 428 : Washable Distemper – Specification

IS: 702 : Specification for industrial bitumen

IS: 710 : Specification for marine plywood

IS: 712 : Specification for building limes

IS: 733 : Wrought alluminium and alluminiumal1oys, bars, rods and sections for general engineering purposes

IS: 777 : Specification for glazed earthenware tiles

IS: 1003 : Specification for timber paneled and glazed shutters - Part 1 Door Shutters

IS: 1003 : Specification for timber paneled and glazed shutters - Part 2 Window ventilator shutters

IS: 1038 : Specification for steel doors, windows and ventilators

IS: 1077 : Specification for common burnt clay building bricks

IS: 1081 : Code of practice for fixing and glazing of metal (steel & alluminium) doors, windows and ventilators

IS: 1124 : Method of test for determination of water absorption, apparent specific gravity and porosity of natural building stones

IS: 1237 : Specification for cement concrete flooring tiles

IS: 1322 : Bitumen felts for waterproofing and damp proofing

IS: 1346 : Code of practice for waterproofing of roofs with bitumen felts

IS: 1361 : Specification for steel windows for industrial buildings

IS: 1397 : Specification for craft paper

IS: 1443 : Code of practice for laying and finishing of cement concrete flooring tiles

IS: 1477 : Code of practice for painting of ferrous metals in buildings Part 1 – Pretreatment

IS: 1477 : Code of practice for painting of ferrous metals in buildings Part 2 – Painting

IS: 1542 : Specification for sand for plaster

IS: 1580 : Specification for bituminous compounds for waterproofing and caulking purposes

IS: 1597 : Code of practice for construction of stone masonry Part 1 Rubble stone masonry

IS: 1659 : Specification for block boards

IS: 1661 : Code of practice for application of cement and cement-lime plaster finishes

IS: 1834 : Specification for hot applied sealing compound for joint in concrete

IS: 1838 : Specification for preformed fillers for expansion joint in concrete pavements and structures (non-extruding and resilient type)Part 1 Bitumen impregnated fiber

IS: 1948 : Specification for alluminium doors, windows and ventilators

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IS: 1949 : Specification for alluminium windows for industrial buildings

IS: 2074 : Ready mixed paint, air drying, red oxide-zinc chrome, and priming

IS: 2114 : Code of practice for laying in-situ terrazzo floor finish

18: 2116 : Specification for sand for masonry mortars

1S: 2185 : Specification for concrete masonry units (Parts 1,2 & 3)

IS: 2202 : Specification for wooden flush door shutters (Solid core type)Part 1 - Plywood face panels

IS: 2202 : Specification for wooden flush door shutters (Solid core type)Part 2. -

IS: 2212 : Code of practice for brickwork

IS: 2250 : Code of practice for preparation and use of masonry mortars

IS: 2338 : Code of practice for finishing of wood and wood based materials - Part 1 - Operations and workmanship

IS: 2338 : Code of practice for finishing of wood and wood based materials - Part 2 – Schedules

IS: 2339 : Aluminium paint for general purposes, in dual container

18: 2395 : Code of practice for painting Concrete, masonry and plaster surfaces – Part 1 - Operations and Workmanship

IS: 2395 : Code of practice for painting Concrete, masonry and plaster surfaces – Part 2 – Schedule

IS: 2402 : Code of practice for external rendered finishes

IS: 2571 : Code of practice for laying in-situ cement concrete flooring

IS: 2572 : Code of practice for construction of hollow concrete block masonry

IS: 2645 : Specification of integral cement waterproofing compounds

IS: 2690 : Specification for burnt clay flat terracing tiles Part 1 Machine made

IS: 2691 : Specification for burnt clay facing bricks

IS: 2750 : Specification for steel scaffoldings

13: 2835 : Flat transparent sheet glass

IS: 2932 : Specification for enamel, synthetic, exterior types (a) undercoating, (b) finishing

IS: 3036 : Code of practice for laying lime concrete for a waterproofed roof finish

IS: 3067 : Code of practice of general design details and preparatory work for damp proofing and waterproofing of buildings

IS: 3068 : Specification for broken brick (burnt clay) coarse aggregates for use in lime concrete

Mortar

Mortar for brickwork, brickwork and stonework shall be prepared in accordance with IS 2250. Cement mortar shall consist of 1 part of Portland cement to 4 parts of sand. Mortar shall be mixed on clean, hard dry platforms protected from sun and rain. The constituents shall be measured using properly made gauge boxes and shall be thoroughly mixed dry before water is added. Any mortar not used 30 minutes after the water is added shall be discarded. Portland cement for mortar shall comply with the Specification of cement as in this tender document. Natural Sand for mortar shall comply with IS 2116 and shall be of the following grading: -

IS Sieve Percentage Passing by Weight

4.75 mm 98 – 100

2.36 mm 80 - 100

1.18mm 60 - 80

600 microns 40 – 65

300 microns 10 – 40

150 microns 0 - 10

Sand for mortar shall be from an approved source and shall consist of hard, coarse siliceous grains free from deleterious matter. It shall be stored separately from other sand or fine aggregate and shall be kept covered. The Contractor shall submit samples of natural sand for mortar for the Engineer's approval if ordered. Water for mortar shall comply with the Specification of water as in this tender document.

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Bricks

Bricks for common brickwork shall be whole, sound, well burnt clay bricks / fly ash bricks, free from cracks and best locally available. Samples of bricks to be supplied shall be submitted to the Engineer for his approval prior to procurement. Bricks shall not be tipped on the Site but shall be carefully stacked by hand keeping the different grades. Broken or damaged bricks shall not be used in brickwork. The crushing strength of ordinary clay bricks shall not be less than 50 kg/cm2 and its water absorption shall not be more than 20 % for bricks used in panel walls and 15 % for load bearing walls. Tolerances in dimensions of bricks shall be allowed only in conformity with IS 1077 (i.e. ± 3.3%). Brickwork

Brickwork shall be built in accordance with the requirements of IS 2212. Every brick shall be wetted and laid on a full and close joint of mortar on its bed, side and end in one operation, joints being fully flushed up as the work proceeds. The previous course shall be wetted, if it has dried and the walls shall be brought up evenly with no portion racked up (and not toothed) more than one meter higher than another. All brickwork shall be properly bonded together. Joints shall not exceed 10 mm in thickness and shall be raked out to a depth of 7.5 mm as a key for rendering or plastering. All courses shall be truly horizontal and all perpends shall be strictly plumb and square. All 230 mm thick brick masonry shall be plumb from outside. Concrete Blocks

Concrete blocks whether made on or off site shall be manufactured to the shapes, sizes and finishes shown on the Drawings and shall comply with the requirements of IS 2185. The Contractor shall submit full details of his proposed manufacturing arrangements to the Engineer for his approval before making any blocks for use in the works and shall submit such samples as may be needed to demonstrate the quality of the finished product. Production of blocks shall be of equal standard to the approved standard blocks. Concrete for blocks whether made on or off site shall be made generally in accordance with section 2.3 of the Specification except that the combined aggregate shall have a fineness modules lying between 3.6 and 4 and shall conform to the following grading:

IS Sieve Percentage Passing by Weight

12.5mm 100

10 mm >85

4.75mm >60

300 microns >10

Concrete for blocks shall be of grade M20. Hand mixing shall not be permitted. When ordered by the Engineer, sample blocks from any batch shall be tested as specified in IS 2185. Finished blocks shall be neatly stacked for storage on firm dry supports and shall be covered to protect them from dust, sun and rain. Damaged blocks shall not be used in the works. Rubble Packing / Soling

Rubble used for packing under floors, foundations, etc. shall be hard and durable rock, free from veins, flaws and other defects. The quality and size of the rubble shall be subject to the approval of the Engineer. Rubble shall be hand packed as directed by the Engineer. They shall be laid closely in position on the sub-grade. All Interstices between the stones shall be wedged in with smaller stones of suitable size well driven to ensure tight packing and complete filling of interstices. Such filling shall be carried out simultaneously with the placing in position of rubble stones and shall not lag behind.

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Interstices shall be filled with small stone chips and hard clean sand and well watered and rammed. The unit of measurement shall be Cubicmetre for the specified thickness of rubble packing. Finishes General

The Contractor shall demonstrate his ability to apply finishes to the standards required under the Contract. If, in the opinion of the Engineer, the demonstrations do not satisfy the standards required, the Engineer may order the Contractor to employ a specialist firm of sub-contractors approved by the Engineer to carry out all or part of this work. Kota Stone Flooring

Stones should be of approved quality, hard, sound, durable and of uniform thickness. Edges shall be chisel dressed and the top surface shall be machine mirror polished with joints running true and parallel from side to side. Stones should be laid on a bed of lime mortar of proportion 1: 2 or cement mortar of proportion 1: 3. Thickness of mortar bedding should not be less than 12 mm and not more than 25 mm. Before lying, the stone slabs should be thoroughly wetted with clean water. Thick cement slurry should be spread over the mortar bed over as much area as could be covered with the slabs within half an hour. The slabs are then laid and gently tapped with mallet till it is firmly and properly bedded. There should be no hollows left. The joints should not be more than 2 mm wide. The joints should be struck smooth. The floor should be kept covered with damp sand or water for a week. Slabs should be of standard sizes and shapes. Slabs supplied should meet all the required properties and test requirements as stipulated in IS 1124. Kotah stones in skirting shall be laid against a bedding of cement mortar (1: 3) 20 mm thick to the full height of skirting, to a true plane, level and plumb. The workmanship shall be similar to flooring. The skirting shall be laid projected beyond the finished plastered surfaces.The continues horizontal grooves it the top of skirting shall be provided if required. The skirting surfaces shall be repolished with hand to satisfaction of the Engineer. The skirting shall be cured for 7 days. The specifications and workmanship for Kotah stone risers shall be the same as per Kotah stone skirting. Top of exposed skirting shall be machine cut and polished Tiles used at projecting corners shall be suitably leveled to present a neat corner. Cement Plaster i Cement and sand

Cement and sand shall conform to the specifications as mentioned in Clauses 2.3.4(a) and 2.3.5 respectively. Neeru

Neeru shall be made of the best description of lime, soaked with fresh water andsifted. The lime shall be reduced to fine powder by grinding it on a stone or in a hand mill, with a thick solution of mussalla to be made or as may be desired by the Engineer. The neeru thus prepared shall be kept moist until used and the quantity to be prepared at one time shall be such that it can be used within eight days in the works.

Workmanship

All brick masonry shall be thoroughly wetted and joints raked out to a depth of at least 20 mm and walls washed before any plastering is done. The surface shall then be rendered with a mortar of specified parts of Portland cement and fine sand, to 20 mm thickness and specified roughness. The surface shall then be floated or set with a thin coat of 3 mm thick cement and polished well with a trowel or flat board. The cement mortar shall be used within 30 minutes after it leave' the mixing board or mill. Before any plaster work is started patches of plaster 150 .mm x 150 mm shall be put on at every 3 metres apart as gauges so as to ensure an even thickness throughout the work. Cement plaster shall be done in even squares or strips. Care shall be taken to keep the whole surface thoroughly wetted for at least a week. The finishing surface shall be as specified and directed. Neeru finish shall be applied to the prepared and partially set but somewhat plastic surface, with steel trowel to a thickness slightly exceeding

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1.5 mm, (1/16") and rubbed down to 1.5 mm (1/16") thickness and polished to a perfectly smooth and even finish working from top to bottom. The junction between beams and brickwork shall be plastered after fixing the expanded metal wire mesh of 300 mm width. The wire mesh shall be of size 20 mm x 20 mm gauge thickness. No separate payment shall be made for fixing such mesh. Sand Faced and Plain Faced Cement Plaster

The external plaster shall be finished with sand faced cement plaster in two coats. All brick masonry surfaces to be plastered shall be thoroughly wetted for at least 6 hours and the joints raked to a depth of at least 20 mm before plastering. The first coat of cement plaster in 1: 3 proportions shall be applied uniformly all over the surface to be plastered to a thickness of 14 mm with a trowel and in exact plumb. This coat shall be allowed to set for not less than half an hour Indentation shall then be made in the form of waves by raking a wire broom over the surface to form a key for the second coat. Waterproofing compound such as CICO Impermo etc. shall be added in the 1st coat of cement mortar at the rate as specified by the Engineer or by the manufacturer and as approved by the Engineer. The plastered surfaces shall be cured for seven days and thereafter allowed to dry out for 3 days before taking up the second coat of plaster. The second coat shall be applied in 1: 3 proportions using clean sand screened through a mesh of not less than 0.5 mm and not more than 3.00 mm size to a uniform thickness of 6 mm by trowel and flat board in exact plumb. The surface shall then be tapped with a cork piece to give a desirable uniform granular appearance. Care shall be taken for keeping whole surface thoroughly wetted for at least one week. The plain faced cement plaster shall be in cement mortar 1: 3 and shall be 20 mm thick. The workmanship shall be similar to that for sand faced plaster, except that waterproofing compound shall not be added. All surfaces applied with plain faced cement plaster shall be finished with neeru as specified. Distempering, While / Color Washing and Painting Distempering

The surface to be treated shall be thoroughly cleaned of all dirt and loose particles etc. Inequalities and holes shall be filled with gypsum which should be allowed to set hard before distemper is applied. Distemper shall be of well known brands of approved make. It shall be applied by a broad stiff brush in two coats over a coat of primer. The first and second coat shall be applied only after the primer coat has thoroughly dried. The first coat shall be of a lighter tint. The shade of the distemper shall be got approved by the Engineer. Water bound and oil bound distemper shall conform to the requirements of IS: 427 and 428 respectively.

White Wash

Walls shall be thoroughly cleaned before white wash is applied. White wash shall be of ordinary fat lime and of good quality. It shall be slaked with an excess of water to the consistency of a cream and allowed to remain under water for 2 days. It shall then be strained through a cloth and 2 Kg. of clean gum added for every cubic metre of lime ready for white washing. Each coat is to be applied with a brush. It shall be laid with a stroke of the brush from the top downwards, another from bottom upwards over the first stroke and similarly, one stroke from the right and another from the left over the first brush before it dries. Three such costs shall be applied. Color Wash

Color wash shall be applied the same way as white wash. Necessary and approved colouring matter shall be added to the white wash which has been strained. Only wash sufficient for the day's work shall be prepared each morning. If the finished surface is powdery and comes off easily or the general appearance is streaky, the work shall be rejected. Painting Generally

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All paints and preserves shall be of approved make and their application shall conform to the manufacturer's instructions. Where more than one undercoat is specified it shall be applied in coats of distinctive tints. Unless the manufacturer's instructions state otherwise 48 hours drying time shall elapse between successive applications of any primer and 24 hours between applications of all subsequent coats. The surface of bituminous paints shall be left at least 3 days before further handling. No paints in any coat shall be applied until the Engineer's Representative is satisfied that the surface is clean and dry, and that any previous coat, is satisfactory and has hardened adequately. When a surface has been approved, it must be painted immediately. Paintwork shall be rubbed down with glass paper between coats. No paint shall be applied to a surface, which is damp, dirty or otherwise inadequately prepared. Final painting shall not be commenced until substantial completion of the Contract unless otherwise ordered.

Painting of Concrete and Brickwork

Where specified to be painted, concrete shall be rubbed smooth and any cracks, blister holes and other imperfections cut out, filled and made good. The concrete and brick work shall be dried to the satisfaction of the Engineer before painting is commenced and drying time of at least 28 days shall be allowed after laying brickwork or stripping form work from concrete. The surface shall be brushed to remove any efflorescence and then painted with the following: -

i For interior brickwork and concrete, apply two coats of Oil bond distemper paint over a

coat of primer. ii For exterior brickwork and concrete, apply two coats of cement based paint over a coat

of primer with a water repellent coat of siloconate solution of approved make. Paint to be used for the various items of work should be approved make and colour. It is imperative that the Contractor should obtain Engineer's permission in regard to the make and colour of paint that he proposes to use for the various items of work. The painting work shall be carried out as directed by the Engineer, keeping, however, in view the recommendations of the manufacturer.

Ironwork and Ungalvanised Steel work

Structural steelwork shall be shot blasted to a "White metal" finish, and grease and oil removed prior to painting. Priming shall immediately follow blast cleaning and no cleaned surface shall be left unprimed for more than four hours. Only primers that chemically inhibit corrosion shall be used. Where the iron or steelwork is not in contact with raw or treated water the primer shall be red lead complying with IS 57. Where there is a possibility that the steel or ironwork may come in contact with water the priming treatment shall be non toxic, zinc chromate or equivalent. Where it is anticipated that further welding will be required, an approved welding primer shall be applied to the areas to be welded and reprimed with the main primer when welding has been completed. Primer coats shall not be less than 0.05 mm each. After erection all damaged areas shall be made good, and reprimed where the original coat has scraped or chipped off. If rust has spread under the primer the affected surface shall be cleaned down to bare metal to the satisfaction of the Engineer and then reprimed. Repainting shall be carried out as soon as possible after erection. If it is to be exposed to weather or condensation it shall receive two further coats of primer. Metal work in intermittent or permanent contact with raw or treated water shall have two finishing coats of approved coal tar pitch epoxy paint such as "Comastic" or "Epilux 5" by Berger Paints, or equivalent. The total coating shall be a minimum of 0.125 mrn thick. After priming, iron and steelwork to have a decorative finish shall be painted as follows:

i Interior work shall be given one coat of micaceous iron oxide paint, and then one

approved undercoat plus one coat of gloss paint. ii Exterior work shall be as for interior work except that two coats of micaceous iron oxide shall be applied.

Inter locking Paving blocks

Providing and fixing heavy duty inter locking concrete coloured paving blocks of 50mm thickness of having a strength of 350 kg/Sq.cm. of approved quality and shape on a bed of CC 1: 8: 16 including skirting joints and cleaning etc.

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D) Steel Work

Steel Materials

Steel materials shall comply with the specifications. All materials used shall be new, unused and free from defects steel conforming to IS: 1977 shall be used only for the following:

Fe310-0(St 32-0): For general purposes such as door/window frames, grills, steel gates, handrails, fence posts, tee bars and other nonstructural use.

Fe410-0(St 42-0): For structures not subjected to dynamic loading other than wind loads such as: Platform roofs, foot over bridges, building, and factory sheds etc.

Fe510-0(St 42-0): Grade steel shall not be used a) If welding is to be employed for fabrication b) If site is in severe earthquake zone c) If plastic theory of design is used

Preferred make for steel shall be SAIL, TISCO and Jindal or equivalent approved by the Engineer-In-Charge. Fabrication: General All workmanship and finish shall be of the best quality and shall conform to the best approved method of fabrication. All materials shall be finished straight and shall be machined/ground smooth true and square where so specified. All holes and edges shall be free of burrs. Shearing and chipping shall be neatly and accurately done and all portions of work exposed to view shall be neatly finished. Unless otherwise approved by the ENGINEER, reference may be made to relevant IS codes for providing standard fabrication tolerance. Material at the shops shall be kept clean and protected from weather. i Connections

Shop/ field connections shall be as per approved fabrication drawings. In case of bolted connections, taper washers or flat washers or spring washers be used with bolts as necessary. In case of high strength friction grip bolts, hardened washers are used under the nuts or the bolt heads whichever are turned to tighten the bolts. The length of the bolt shall be such that at least one thread of the bolt projects beyond the nut, except in case of high strength friction grip bolts where this projection shall be at least three times the pitch of the thread. In all cases where bearing is critical, the unthreaded portion of bolt shall bear on the members assembled. A washer of adequate thickness may be provided to exclude the threads from the bearing thickness, if a longer grip bolt has to be used for this purpose. All connections and splices shall be designed for full strength of members or loads. Column splices shall be designed for the full tensile strength of the minimum cross section at the splice. All bolts, nuts, washers, electrodes, screws etc., shall be supplied/brought to site 10% in excess of the requirement in each category and size. Rates shall cover the cost of this extra quantity. All members likely to collect rainwater shall have drain holes provided. ii Straightening

All materials shall be straight and, if necessary, before being worked shall be straightened and/or flattened by pressure and shall be free from twists. Heating or forging shall not be resorted to without the prior approval of the ENGINEER in writing.

iii Rolling and Forming

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Plates, channels, RSJ. etc., for circular bins, bunkers, hoppers, gantry girders, etc., shall be accurately laid off and rolled or formed to required profile/shape as called for on the drawings. Adjacent sections shall be match-marked to facilitate accurate assembly, welding and erection in the field. iv High Strength Friction Grip Bolting

Inspection after tightening of bolts shall be carried out as stipulated in the appropriate standards depending upon the method of tightening and the type of bolt used. v Welding

Welding procedure shall be submitted to the ENGINEER for approval. Welding shall be entrusted to qualified and experienced welders who shall be tested periodically and graded as per IS: 817, IS: 7310 (Part 1) and IS: 7318 (Part 1). While fabricating plated beams and built up members, all shop splices in each component part shall be made before such component part is welded to other parts of the members. Wherever weld reinforcement interferes with proper fit-up between components to be assembled off welding, these welds shall be ground flush prior to assembly. Approval of the welding procedure by the ENGINEER shall not relieve the Contractor of his responsibility for correct and sound welding without undue distortion in the finished structure. No welding shall be done when the surface of the members is wet nor during periods of high wind. Each layer of a multiple layer weld except root and surface runs may be moderately penned with light blows from a blunt tool. Care shall be exercised to prevent scaling or flaking of weld and base metal from over peening. No welding shall be done on base metal at a temperature below -5ºC. Base metal shall be preheated to the temperature as per relevant IS codes. Electrodes other than low-hydrogen electrodes shall not be permitted for thicknesses of 32 mm and above. All welds shall be inspected for flaws by any of the method adopted as per the clause no. 2.6.5. The choice of the method adopted shall be agreed with the Engineer. The correction of defective welds shall be carried out in a manner approved by the ENGINEER without damaging the parent metal. When a crack in the weld is removed, magnetic particle inspection or any other equally positive means approved by the ENGINEER shall be used to ensure that the whole of the crack and material up to 25 mm beyond each end of the crack has been removed. The cost of all such tests and operations incidental to correction shall be borne by the Contractor. vi Tolerances

The dimensional and weight tolerance for rolled shapes shall be in accordance with IS: 1852 for indigenous steel and equivalent applicable codes for imported steel. The tolerances for fabrication of structural steel are as per IS: 7215. Cutting, punching, drilling, welding and fabrication tolerances shall be generally as per relevant IS codes. vii End Milling

Where compression joints are specified to be designed for bearing, the bearing surfaces shall be milled true and square to ensure proper bearing and alignment. viii Inspection :General

The Contractor shall give due notice to the ENGINEER in advance of the works being made ready for inspection. All rejected material shall be promptly removed from the shop and replaced with new material for the ENGINEER’s inspection The fact that certain material has been accepted at the Contractor's shop shall invalidate final rejection at site by the ENGINEER if it fails to conform to requirements of these specifications, to be in proper condition or has fabrication inaccuracies which prevent proper assembly nor shall it invalidate any claim which the Engineer may make because of defective or unsatisfactory materials and/or workmanship. No materials shall be painted or dispatched to site without inspection and approval by the ENGINEER unless such inspection is waived in writing by the ENGINEER. The Contractor

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shall provide all the testing and inspection services and facilities for shop work except where otherwise specified. For fabrication work carried out in the field the same standard of supervision and quality control shall be maintained as in shop fabricated work. Inspection and testing shall be conducted in a manner satisfactory to the ENGINEER. Inspection and tests on structural steel members shall be as set forth below.

Shop Matching

For structures like bunkers, tanks, etc. shop assembly is essential. For other steelwork, such as columns along with the tie beams/bracings may have to be shop assembled to ensure satisfactory fabrication, obtaining of adequate bearing areas etc., if so desired by the Engineer. All these shop assemblies shall be carried out by the Contractor. Drilling Holes for Other Works

As a part of this Contract, holes in members required for installing equipment or steel furnished by other manufacturers or other contractors shall be drilled by the Contractor at no extra cost of the Employer. The information for such extra holes will be supplied by the Engineer. Marking of Members

After checking and inspection, all members shall be marked for identification during erection. This mark shall correspond to distinguishing marks on approved erection drawings and shall be legibly painted and stamped on it. The erection mark shall be stamped with a metal dye with figures at least 20 mm high and to such optimum depth as to be clearly visible. All erection marks shall be on the outer surface of all sections and near one end but clear of bolt holes. The marking shall be so stamped that they are easily discernible when sorting out members. The stamped marking shall be encircled boldly by a distinguishable paint to facilitate easy location. Erection marks on like pieces shall be in identical locations. Members having lengths of 7.0 m or more shall have the erection mark at both ends. Errors

Any error in shop fabrication which prevents proper assembling and fitting up parts in the field by moderate use of drift pins or moderate amount of reaming will be classified by the Engineer as defective workmanship. Where the Engineer rejects such material or defective workmanship, the same shall be replaced by materials and workmanship conforming to the Specifications by the Contractor, at no cost to the Employer.

Painting of Steel Work

All fabricated steel material, except those galvanised shall receive protective paint coating as specified in specification, which is described below. i Materials

Red-oxide-zinc chrome primer shall conform to IS: 2074 Synthetic enamel paint shall conform to IS: 2932 Aluminum paint shall conform to IS: 2339. All the materials shall be of the best quality from an approved manufacturer. Contractor shall obtain prior approval of the Engineer for the brand of manufacture and the colour / shade. All the materials shall be brought to the site in sealed containers. ii Workmanship

Painting work shall be carried out only on thoroughly dry surfaces. Painting shall be applied either by brushing or by spraying. Contractor shall procure the appropriate quality of paint for this purpose as recommended by the manufacturer. The workmanship shall generally conform to the requirement of IS: 1477 (Part 2). The type of paint, number of costs etc. shall be as specified in the respective items of work. Primer and finish paint shall be compatible with each other to avoid cracking and wrinkling. Primer and finish paint shall be from the same manufacturer. All the surfaces shall be thoroughly cleaned of oil, grease, dirt, rust and scale. The methods to be adopted using

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solvents, wire brushing, power tool cleaning etc., shall be as per IS: 1477 (Part - I) and as indicated in the item of work. It is essential to ensure that immediately after preparation of the surfaces; the first coat of red oxide-zinc chrome primer shall be applied by brushing and working it well to ensure a continuous film without holidays. After the first coat becomes hard dry, a second coat of primer shall be applied by brushing to obtain a film free from ‘holidays’. After the second coat of primer is hard dry, the entire surface shall be wet rubbed cutting down to a smooth uniform surface. When the surface becomes dry, the undercoat of synthetic enamel paint of optimum thickness shall be applied by brushing with minimum of brush marks. The coat shall be allowed to hard dry. The under coat shall then be wet rubbed cutting down to a smooth finish, taking adequate care to ensure that at no place the undercoat is completely removed. The surface shall then be allowed to dry. The first finishing coat of paint shall be applied by brushing and allowed to hard dry. The gloss from the entire surface shall then be gently removed and the surface dusted off. The second finishing coat shall then be applied by brushing. Atleast 24 hours shall elapse between the applications of successive coats. Each coat shall vary slightly in shade and this shall be got approved by the Engineer. Acceptance of Steel its Handling and Storage

The Contractor shall carefully check the steel to be erected at the time of acceptance. Any fabrication defects observed should be brought to the notice of the ENGINEER. No dragging of steel shall be permitted. All steel shall be stored 300mm above ground on suitable packing to avoid damage. It shall be stored in. the order required for erection, with erection marks visible. All storage areas shall be prepared and maintained by the Contractor. Steel shall not be stored in the vicinity of areas where excavation or grading will be done and, if so stored temporarily, this shall be removed by the Contractor well before such excavation and/or grading commences to a safe distance to avoid burial under debris. Scratched or abraded steel shall be given a coat of primer in accordance with the Specifications for protection after unloading and handling prior to erection. All milled and machined surfaces shall be properly protected from rust/corrosion by suit able coating and also from damage. Erection

All structural steel shall be erected as shown on the drawings prepared by the Contractor. Proper size steel cable slings, etc., shall be used for hoisting. Guys shall not be anchored to existing structures, foundations, etc., unless so permitted by the Engineer in writing. Care shall be taken to see that ropes in use are always in good condition. Steel columns in the basement, if any, are to be lowered and erected carefully with the help of a crane and/or derrick without damaging the basement walls or floor. Structural steel frames shall be erected plumb and true. Frames shall be lifted at points such that they are not liable to buckle and deform. Trusses shall be lifted only at node points. In the case of trusses, roof girders, all of the purlins and wind bracing shall be laced simultaneously and the columns shall be erected truly plumb on screed bars over the pedestals. All steel columns and beams shall be checked for plumb and level individually before and after connections are made. Temporary bracings shall be introduced wherever necessary to take care of all loads to which the structure may be subjected, including erection equipment and the operation thereof. Such bracings shall be left in place as long as may be required for safety and stability. Chequered plates shall be fixed to supporting members by tack welding or by countersunk bolts as shown/specified in relevant drawings and/or as approved by the Engineer. The edges shall be made smooth and no burrs or jagged ends shall be left. While splicing, care should be taken so that there is continuity in pattern between the two portions. Care should also be taken to avoid distortion of the plate while welding. The erection of chequered plates shall include: i. Welding of stiffening angles/vertical stiffening ribs ii.Cutting to size and making holes to required shape wherever necessary to allow service piping and/or cables to pass through iii. Smoothening of edges

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iv. Fixing of chequered plates by tack welding or by countersunk bolts v. Providing lifting hooks for ease of lifting. As erection progresses, the work shall be securely bolted to take care of all dead load, wind, seismic and erection stresses. No riveting or welding or final bolting shall be done until the structure has been properly aligned and approved by the ENGINEER. No cutting, heating or enlarging of the holes shall be carried out without the prior written approval of the ENGINEER. Test certificates shall be furnished by the Contractor. Painting

After steel has been erected, all bare and abraded spots, rivet heads, field welds, bolt heads and nuts shall be spot painted with primer. Before paint is applied, the surface shall be dry and free from dust, dirt, scale and grease. All surfaces inaccessible after erection shall receive two coats of the approved paint before erection. Cleanup of Work Site During erection, the Contractor shall at all times keep the working and storage areas used by him free from accumulation of waste materials or rubbish. Before completion of erection, he shall remove or dispose of in a satisfactory manner all temporary structures, waste and debris and leave the premises in a condition satisfactory to the Engineer.

E) SPECIFICATION FOR TUBE WELL

1. GENERAL

The scope of work for bidder consist of drilling of tube well by reverse rotary rig, lowering of tube well assembly including MS pipe for water & UPVC casing pipe filter etc. providing and packing of Pee- Type gravel of required size. Types of plain pipe with size, wall thickness & slotted pipes/strainer with opening should be used as mentioned in the tender.

2. SCOPE OF TUBE WELL WORK

2.1. Drilling of tube well starting with minimum 250mm dia with reverse rotary Rig as per IS 2800

(Part-I) -1991 (Reaffirmed-1997) & (Part II)-1979 (Reaffirmed-1999).

(a) Providing & lowering of tube well assembly, including jointing etc. (b) GI Housing pipe 250 mm dia. (c) UPVC blind pipe 200 mm dia. (d) UPVC filter/strainer 200mm dia. (e) Providing & installation of submersible Pump sets with control panel, cable, Column Pipe

etc.

Notwithstanding the scope of work described above, any item of work, required for making the tube well operational is included in the scope of work except extra connection cable from PSPCL pole to meter box. Guarantee with regard to the verticality of tube well and sand free discharge from the well at the time of handing over shall be given by the contractor. It is clearly stated that all work relating to drilling and completion of tube well will be done as per guide lines of site Engineer and under his supervision, quantity of gravel and length of pipes etc. shall be measured. All material used in the installation of tube well shall be of good quality and as per specifications given in the tender document. Wherever reference is made to Indian standard specifications, the latest amendments to specifications shall be applied. The Scope of Work for which the bidder has to submit his Bid is given above. This volume deals with scope of work and technical specifications. Bidder should also read all volume for the purpose of this tender.

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3. SPECIFICATION FOR INSTALLATION OF TUBE WELL

3.1. DRILLING

Drilling of tube well starting with minimum 250mm dia driven pipe with suitable Rig as per IS 2800 (Part-I) -1991 (Reaffirmed-1997) & (Part II)-1979 (Reaffirmed-1999).

3.2. BLIND PIPES

200mm Dia uPVC blind Pipe UPVC casing pipe for water wells marked as per ISI: 12818-2010 (with up to date amendments) except for joints and ends duly screwed and screwed and socketed V-type threading both ends in 8 TPL. The pipes shall be of steel grade FE-410 thickness of pipe 6.4mm. The length shall be 4 mtr. to 6 mtr without any circumferential welded joint. Both ends of the pipe shall have outer threads 8 TPL 75mm thread length. One end fitted with a steel socket 10mm thick, 160mm long and other ends fitted with a steel thread protection ring, 10mm thick and 76mm long. Pipes shall be painted with black bituminous paint and should withstand minimum pressure of 7MPA.

3.3. FILTER/SCREEN

200MM Nominal dia all welded UPVC wound screen UPVC Wound Screen as per IS: 12818-2010 with up to date amendment and material specification as per AISI (American Iron and Steel instead Grade 1012. Screen will be of continuous trapezoid wire spirally wound around fabricated cage. The wrapping wire having a ‘V’ shaped (wedge) profile wire with flat surface on the outside and producing expanding slots on the inside of various dimensions resistance welded to a cylindrical body made of number of longitudinal special high tensile support rods to provide smooth unrestricted bore which are in turn welded into cylindrical ring couplings at either end minimum thickness 7.0mm but approved by the Engineer-in Charge.

3.4. 100MM M.S CLAMP

Fabricated from 150 x 12 mm thick M.S flat with suitable shape of clamp for 100 mm G.I pipe with 4 Nos. holes on each side for nut & bolt of 20 mm size.

3.5. 200MM CAP

Made of M.S Ring in circular form of 200 mm inner dia threading of ring 8 TPI. One side of ring covered by welding with 200mm dia 6mm thick M.S Plate.

4. DEVELOPMENT OF TUBE WELL

4.1. VERTICALITY AND ALIGNMENT

For verticality and alignment, the requirement as laid down in clause 4 of IS 2800-1979 part-II will be ensured.

4.2. SUBMERSIBLE PUMPING SET

Providing installing and commissioning of electric driven pumping set as per approved list with submersible motor capable of delivering discharge at head stated in BoQ vol-3 complete with caging of pump, Pump Controller having parts such as Starter, Moulded Case circuit breaker (MCCB), Volt meter, Ampere meter, indicating lamps, Single phase preventer, shunt Capacitor, time switch, earth leakage circuit breaker, Danger Plate. Time switch. Submersible Cable, Cable Clamp Column Pipe, Lowering clamps.

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5. SPECIFICATIONS

5.1. PUMP

Submersible Pumping set shall be manufactured in accordance with IS: 8034-1976 with up to date amendments. It shall be centrifugal multistage pump having bronze impeller, dynamically balanced to ensure cavitation and hunting free performance. The bowl assembly shall be of cast; iron and shall be capable of with; standing hydrostatic pressure equal to twice the pressure at duty point or 1.5 times at shut off whichever is higher. Bowl Assembly shall be with adopter piece. The impeller shaft shall be of stainless steel and guided with bearing provided with suction case with strainer. The bidders must supply the following data for Pumping Set offered against heads mentioned below:-

Sr. No. Duty of Pumping Set

1 900 LPM at 55 Mt head

(a) Delivery head in metres against which the Discharge, overall efficiency of pump & motor

and Motor efficiency and Power absorbed by Pumping set has to be mentioned in the tender

(b) The size of the pump should be given. (c) The bidders are requested to attach the original master curves of the pump manufacturer

duly authenticated by them with tender. (d) For the purpose of power loading, the efficiency quoted by the bidder shall be taken into

account subject to the minimum 55% overall. They are requested to give the following data for pump offered by them in case of each item against the head mentioned above.

(e) Discharge (f) Overall Efficiency

(g) Power absorbed

5.2. MOTOR

The motor shall be totally enclosed squirrel cage induction electric motor and shall be provided with thrust bearing to withstand weight of all rotating parts and hydraulic thrust. The motor shall be provided with suitable device to take care of expansion and contraction of Lubricating water inside the motor. The windings of motor shall be accessible to hand after dismantling of motor for repairs if required. It shall be capable for 420 volts plus minus 7.5% 3 Phase 50 cycles, AC supply running at 2900 RPM. The motor shall be properly scaled so as not to allow any part of liquid to enter into it from either side of the motor shaft. The H.P. of the electric motor shall be 20% in excess of the maximum horse power absorbed under all condition of working at various heads without exercising throttle control in the pump and 15% at the lowest head.

5.3. COLUMN PIPE

G.I column pipe shall be provided and both ends of pipes shall be screwed and fitted with steel flange after screwing with pipes. The flanges shall confirm BS-1387/1985.The pipe should confirm to IS 1239 (with up to date amendments). Suitable increaser shall be provided with the pump.

5.4. CABLE AND CABLE CLAMPS

Submersible cable shall be of approved make and the capacity of the cable shall be 1.1/2 times than the normal capacity to save it from becoming hot & melting and for longer life. It shall also have required number of clips and length should be sufficient for installation at site.

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5.5. PUMP CONTROLLER SPECIFICATIONS

The specifications covers the Supply of pump Controller shall be suitable for operating various pump sets on 415 + 6% minus 15 volts 3 phase, 50 HZ plus minus 3% AC supply. The supplier must conform in writing the components offered by them are suitable for voltage range which should be duly supported with printed literature and manufacture's certificates. The Pump controllers should confirm to IS 8544 Part-I-1977 and IS 8544 Part-II-1977 as far as applicable. (a) The controller shall be totally enclosed all welded and fabricated from 2.00mm Thick (14

SWG) heavy C.R.C. Steel sheet with dust and vermin proof in accordance with IS 2147-1962 and be suitable for wall mounting provided with grouted angels the controller shall be provided with neoprene gasket within guide so that it does not come out. The controller shall be smooth, anticorrosive finish with a provision of turn locks with key. It shall house all the components on separate Mild Steel base plates for case of maintenance. The M.S. Base plate shall zinc coated. The panel doors of the controller shall have the provision of mounting motoring equipment and indicating lamps etc.

(b) The controller shall be mounted on the pump house wall. The controller should accommodate all the equipment's such as 3 Nos. Contractor, ammeter, Voltmeters with selectors switches time relay and overload relay, capacitor etc. The controller shall be capable for receiving appropriate size of cables and have adequate space to take up bending radius of coming and outgoing cables The frame work shall have separate earthling terminal of adequate size, which shall be readily accessible and protected against erosion

(c) The firm should provide dust proof cable and glands for incoming cable from side and for outgoing cable at the bottom.

(d) The manufacturer shall furnish a certificate to the inspection agency that the enclosure of Pump controller; is dust and vermin proof as per IS 50 category of IS 2147-1962. The pump controller shall comprise of the following components and should be approved.

(e) MOULDED CASE CIRCUIT BREAKERS (MCCB):- "MCCB" for required load with an adjustable thermal overload; release of suitable range and magnetic release fixed at 700 AMP. However, the MCCB should be able to break 5 KA/10 kA short circuit current. The terminal should show on/off indication given by MCCB. The make shall be approved.

(f) VOLT AND AMPERE METER ;- 96mm square 0-500 volts, Volt meter and ammeter/0-100 Amp ranges up to 40 H.P. motor of high quality industrial 'A' grade conforming to latest relevant IS: specifications. Make should be as per list attached. The voltmeter and Ammeter should be of Panel type with selector switches.

(g) INDICATING LAMPS:-Two indicating lamps green and red colored shall be oil and (h) Dust proof direct type bulb rating about 230 V for showing 'PUMP OFF' and 'PUMP

RUNNING' respectively. (i) STARTER; - To control the motor a compatible starter with; three phase bimetal thermal

overload relays, tripping and reset device should be offered. Starter shall be fully automatic air break star delta starter should be provided approved make.

(j) SINGLE PHASE PREVENTOR:- Single phasing preventor suitable for checking the Negative sequence current having built in time delay up to 40 seconds. So that this may not trip while starting on load. Rating of CTS, if required may also be indicated/provided. The make shall be approved make.

(k) SHUNT CAPACITOR: - Power shunt capacitor of suitable capacity 415/440 Volt oil immersed, self-healing, dust proof, hermetically sealed with special epoxy duly ISI marked as per IS 2894-1986 (with up to date amendments). Make should be of approved make.

Motor H.P. Capacity of shunt capacitor

20 5 KVAR

25 6.25 KVAR

30 7.5 KVAR

35 9 KVAR

40 10 KVAR

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(l) TIME SWITCH; - Time switch of approved make model FM/Q T should be provided. (m) EARTH LEAKAGE CIRCUIT BREAKER: - Suitable approved make earth leakage circuit

breaker should be provided. (n) DANGER PLATE: - A Danger Plate of suitable; size should be fixed on the front side of

the pump controller. Provision for earthing of Pump controller as per relevant IS

specifications be made.

5.6. THE TECHNICAL SPECIFICAIONS FOR PUMP SET SHALL BE GIVEN BY THE AGENCY

AS PER PROFORMA GIVEN BELOW

Ser No Description Type

1. Model

2 Discharge in LPM

3 Head in Mtr.

4 Speed in RPM

5 No. of stages

6 Rated H.P. of Motor

7 Pump Eff. At duty point (%)

8 3 core Cable size (Sq.mm) submersible

9 Length of cable (mtr.)

10 Nominal dia of Col. Pipe (mm)

11 Length of Col. Pipe

12 Minimum thickness of Col. Pipe (mm)

13 Motor efficiency (%) at duty point

14 Efficiency of pump set at duty point

15. Pump Eff. (%)

16. Power (BKW)

5.7. DOUBLE FLANGE 80MM DIA NON-RETURN VALVE

(a) Providing & fixing of Non-return valve in accordance with IS: 5312/2004.

5.8. MISCELLANEOUS ITEMS

(a) 3.0 Core Cable 6sqmm The quality of cable should be ISI marked. It should be in accordance with IS 1554, part-I, II-1970 with up to date amendments

(b) Copper Thimble Providing & fixing copper thimble of 100 Amp rating with solder.

(c) Earthing Earthing of Sheet metal/iron clad Switches and metallic cases etc., with No.7/14 S.W.G. (7/2.18 mm.dia.) G.I. wire in 20 mm.dia. G.I.pipe partly recessed and partly on surface complete with 135 cm. long 50 mm.dia. G.I. earth pipe with G.I. reducing socket ( 50 mm.x 20 mm.) including erection of the same,4 metre below ground level with necessary

charcoal & salt mixture etc. up to 7 metre in length ( including boring & refilling).

5.9. FINAL TEST

(a) The final test is to be conducted by the contractor to clearly indicate the performance of the tube well with regard to the yield and the draw down.

(b) The Performa attached is to be completed by the contractor after tube well has been

completed.

Note:-

If the T/well is to be abandoned due to caving or negligence of the contractor, nothing will be paid to the contractor. The decision of the Engineer-in-charge will be final and binding on the contractor. The contractor will not lower the assembly, until & unless the design of the assembly is approved by the Engineer-in-charge. In case he lowers the assembly without the approval the same will not be

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paid. The agency shall submit the proposal for lowering assembly along with the strata chart, etc. to Sub Divisional Engineer for onward transmission to Engineer-in-charge for necessary approval. The lowering of assembly should be done in the presence of Sub Divisional Engineer In charge. The T/well should be handed over to the department in the complete shape. The housing pipe should be closed by a well cap for the period between the completion of the T/well and the installation of the pump set. The cap should be of such a design that it is removable causing no damage to the housing pipe. The following information should be furnished by the drilling agency to the department on completion of the tube well:-

i. Strata chart of the borehole indicating the different type of soil met with at different depth. ii. Samples of strata collected & neatly packed, correctly marked in sample bags kept in wooden

sample box. iii. Chart of the actual pipe assembly lowered indicating the size of pipes depth ranges LCG Screen

has been used depth and diameter of housing pipe from the top of the housing pipe and the dia meter and depth of borehole.

iv. Results of development and its draw down test on the performance of the tube well. v. Results of mechanical (sieves) analysis of samples of aquifer material where ever applicable. vi. Verticality test results to be recorded in accordance with the format given in annexure-I.

vii. Recommendation on the safe pumping yield pump set and specification for suitable pump set.

Table 1 Test Result

A Normal Test

Ser No

Rated Discharge

Depression at Rated Discharge (draw down)

Specific Yield 2/3

Total Hours Run

Sand in PPM at the end of test

Static water level

Pumping Water level

1. 2. 3. 4. 5. 6. 7. 8.

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Annexure - I APPENDIX - ‘A’

VERTICALITY TEST REPORT

Name of tube well _________________________________I.D. of well: _____mm

O.D. of Disc: ______ mm

Conducted by _______________________Disc Connection: _____mm

In the presence of ____________Point of suspension____ mts. above top of well Date

______________________________Static Water level ___________ mts.

Depth of well housing ____________mts.

Depth in mtr.

below top of

T/w

Reading from

arbitrary datum

Deviation from vertical at top of

T/well

Calculated deviation from

vertical at respective

depth

Calculated deviation from

vertical at respective

depth adding Disc correction

Resultant deviation remarks

& its direction

X Y N S E W N S E W N S E W

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Signature of Customer_____________Signature of Tester _________________

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Annexure - II APPENDIX – ‘B’

INFORMATION TO BE FURNISHED BY TESTING AGENCY TO OWNER ON COMPLETION OF THE TESTING OF TUBE WELL

1. Agency conducting the tests ____________________

2. Location of the tube well _________________________

3. Date of starting _________________________________

4. Date of completion _______________________________

5. Total depth of tube well _________Method adopted ___

6. Depth of water level ________ Method adopted _______

7. Result of vertically and alignment test ------

8. Draw down test: Time of test ____

Discharge______________ Period run____________

9. Rated discharge in Per minute

10. Depression head of the production well ________

11. Sand contents in ppm at the rated discharge after 20 minutes of the start of the pump or 20

percent in excess of the rated discharge if 50 prevent extra depression cannot be arranged

__________

12. Recommendation with regard to a suitable pump _________

13. Chemical analysis of tube well water

14. Remarks:

Owners _________________ Tester ___________

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Annexure - III

ANNEXURE - ‘A’

INFORMATION TO BE FURNISHED BY DRILLING AGENCY TO OWNER ON COMPLETION OF TUBE WELL.

1. Agency drilling the tube well ____________________________________ 2. Location of the tube well ____________________________________ 3. Method of drilling adopted ____________________________________ 4. Date of starting ____________________________________ 5. Date of completion ____________________________________ 6. Pilot hole or test hole ________ Bit size _______ Bit Type _________ Hours ______

from _____________ to _______________ 7. Coring done __________ Bit size ____________ Bit type __________ Hours

___________ Recovery ______________ from ______________ to _________________.

8. Reaming ______________ Bit size _____________ Bit type _____________ Hours _________ from______________ to ________________

9. Litho-logical data From To Formations ________________ _____________ ________________ ________________ _____________ ________________ 10. Total depth of tube well drilled ____________________________ 11. Assembly of production well ____________ size _____________ Length

_______________ Type _____________ Perforation per meter _____________ Housing pipe _____________ Blind pipe _____________ Strainer _____________ Bail Plug _____________

12. Top of tube well above / below ground level _____________________________ 13. Size of gravel ___________ Quantity used before development ______________

Quantity used during development ____________________________ 14. Method used for development _______________________ Total hours of testing

________________________ 15. Development discharge __________________________________ 16. Turbidity ______________________________________________ 17. Further details appended:

Samples or strata, neatly packed in sample bags, Chart of pipe assembly lowered, and Results of Mechanical analysis of samples of unconsolidated strata.

18. Remarks Owner ______________________ Driller _________________

6. TERMS & CONDITION

(a) Measurement of depth of bore shall be done from available Ground level at site. (b) The top level of the well will be fixed by Engineer-in-Charge. (c) The rates quoted must include octroi, terminal tax, GST, labour welfare tax and all taxes

applicable as per GC. The rates must include carriage loading/un-loading of all the material boring equipment T & P and other consumables.

(d) The rates must include cutting, threading, assembly of pipe etc.

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(e) The recommendation regarding location of the strainer will be made by the contractor and approved by the Engineer-in-charge.

(f) Nothing extra will be payable for temporarily suspension of work on any ground. (g) The work shall be carried out by the contractor strictly in accordance with ISI Code / PWD

specifications. (h) M.S. Pipes will be accepted strictly according to IS Code specifications. (i) The drilling rig & all accessories including generating set, welding transformer etc will be

transported to the site of work by contractor at his own cost. (j) The bidder can visit the site of boring of tube well to satisfy himself with the actual site

conditions. (k) The bidder should quote his rates in figures as well as in words. (l) The department reserves the right to accept the offer for part job i.e. the number of tube well

can be less than 2, however the offer for part items of a tube well shall not be accepted. Vice versa the department shall also allot the work for complete tube well to a single agency and not any part of a tube well.

(m) All the material installed shall be guaranteed for a period of 18 months from the date of commissioning.

(n) Any earnest money/security deposited against any previous tender/supply order will not be considered. Fresh earnest money should be deposited with the tender otherwise the tender will not be considered.

(o) The bidder should install pump with overall efficiency of pump not less than 60%. (p) No post tender revision in rates/technical specification/improvement of any other nature will

be entertained and any firm who indulges in such practice shall be liable to be debarred from future tendering in the Board. The tender should be submitted complete in all respects with desired information in the first instance.

7. CODES AND STANDARDS

All applicable standards, specifications, etc. and codes of practice shall generally be the latest editions, including all applicable official amendments and revisions. A complete set of all these documents should generally be available at site, with the contractor. All work shall be carried out as per the stipulations contained in various sections of these specifications and the latest Indian Standards, Acts, Codes and best practices. In case of conflict between the stipulations contained in various sections of these specifications and stipulations of Indian Standards, Codes etc. the requirements of stipulations contained in various sections of these specifications shall prevail over that of Indian Standards, Codes, etc. Some of the applicable Indian Standard Codes, etc. are referred to here below:

IS: 2800-latest edition well. (Part I & Part II)

Specification for drilling and construction of tube

IS: 3589- latest edition Specification for M.S. Pipe (Housing pipe). IS: 4097- latest edition

Specification for gravel for use as pack in tube wells.

IS: 11189- latest edition Specification for development of tube well. IS: 1538- latest edition Specification for C.I. Fittings. IS: 14846- latest edition Specification for Sluice valves IS: 5312- latest edition Specification for Non-Return Valve IS: 1363- latest edition Specification for Nut & Bolt IS: 638- latest edition Specification for Sheet Rubber

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F) HIGH MAST LIGHTING SYSTEM.

1.0 Scope of Work for Lighting High Mast, Feeder Pillar & its Accessories:

a) The scope covers design, manufacture, inspection, supply, storage at site till the installation/commissioning works starts and erection, testing, commissioning of 12 M Lighting High Mast, LED Flood Light Luminaire, Outdoor Feeder Pillar Cum Starter Panel, Cables, Earthing, uPVC conduit etc. complete with required accessories as per BOQ, Technical Specification and as required at site.

b) All equipment and accessories shall conform to the latest applicable IS, BS, IE rules, codes, other applicable standards.

c) Specification of items not covered in DNIT shall be as per relevant IS or other applicable standards and codes with amendments. In case of conflict, most stringent specification shall be applicable.

d) All equipment and accessories shall be suitable for continuous operation at rated load at maximum ambient temperature and humidity applicable as per location and site condition.

e) The equipment offered shall be new, of proven design & quality, reputed makes. Contractor shall ensure availability of spare parts and maintenance support services for the offered equipment for at least 10 years from the date of supply.

f) The contractor shall submit calculations, drawing, document, data sheet including manufacturer drawings with bill of material, specification and catalogues with reference details to client/PDMC for approval/ review. Procurement, execution shall be done only after approval/ review by client/PDMC.

g) Contractor shall submit QAP of all major equipment before manufacturing/fabrication for client/PDMC review/approval. Inspection shall be carried out by client/PDMC as per QAP, approved drawing, relevant IS/BS/IEC or other standards. Acceptance and routine test shall be carried out on all equipment as per their relevant standard. These test reports and manufacturer type test report shall be submitted before dispatch of the equipment. Required performance test shall be conducted at site as per relevant standard. Cost of inspection and all test carried out at manufacturer works, site shall be borne by the contractor.

h) Bidders shall visit the site to study existing system and its condition and proposed site to assess extent of work required under this contract.

1.1 Technical Specification of High Mast

This specification covers the requirement of design, manufacture and testing of 12M High Mast along with accessories and requisite hardware. The scope also includes erection, installation and associated civil work like foundation etc.

1.1.1 Codes & Standards

All standards, specifications, and codes of practice referred to herein shall be the latest edition including all applicable official amendments and revisions as applicable.

IS: 5 1994 Colour for ready mixed paints and enamels.

IS: 694 1990 PVC insulated cables for working voltages up to and including 1100V

IS: 800 1984 Code of practice for general construction in steel.

IS: 802 1978 Part-2

Code of practice for use of structural steel in Overhead transmission line towers. Part-2 Fabrication, galvanising, inspection and packing.

IS: 875 1987 Part-3

Code of practice for design loads(other than earthquake) for buildings and structures: Wind loads

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IS: 2062 1992 Steel for general structural purposes.

IS: 2551 1982 Danger notice plates.

IS: 2629 1985 Recommended practice for hot dip galvanising on iron and steel.

IS: 2633 1986 Methods for testing uniformity of coating of zinc coated articles.

IS: 3961 1967 Part-2

Recommended current ratings for PVC insulated cables. Part-2: PVC insulated and PVC sheathed heavy duty cables.

IS: 5133 1969 Part-1

Boxes for enclosure of electrical accessories- Part-1: steel and cast iron boxes.

IS: 5831 1984 PVC insulation and sheath of electric cables.

IS: 8130 1984 Conductors for insulated electric cables and flexible cords.

IS:10810 1984 Method of tests for cables.

IS:13703 1993 Part-1

Low voltage fuses for voltages not exceeding 1000V AC or 1500V DC Part-1:General requirements

IS:13703 1993 Part-2

Low voltage fuses for voltages not exceeding 1000V AC or 1500V DC Part-2:Supplementary requirements for fuses for industrial applications

BS EN 10-027 (part-1) 1992

Designation systems for steel: steel names, principal symbols

BS EN 10-027 (part-2) 1992

Designation systems for steel: steel numbers

BS 5135 National Electrical Code.

BS-EN 10-027 Indian Electricity rules and acts

1.1.2 Service Conditions

Equipment to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions.

1.1.3 Technical Requirement

1.1.3.1. Structure

The High mast shall be of continuously tapered, galvanised polygonal cross section, at least 20 sided, presenting a good and pleasing appearance, based on proven In-Tension design, conforming to the standards referred to above, to give an assured performance, and reliable service. The structure shall be suitable for wind loading as per IS - 875 Part -III, 1987.

Maximum Ambient Temperature (Degree C) 50

Maximum temperature in shade (Degree C) 45

Min. Temperature of Air in Shade (Degree C) -10

Relative Humidity (Percent) 10 To 100

Maximum annual rain fall (mm) 1450

Maximum Wind pressure (Kg/Sq. M.) 150

Maximum altitude above mean sea level (Meters) 3000

lsokeraunic level (days per year) 50

Seismic level (Horizontal Acceleration) Moderately hot and humid tropical climate conducive to rust and fungus growth

0.3g

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1.1.3.2. Construction

The mast shall be fabricated from special steel plates, conforming to BS-EN10-027, cut and folded to form a polygonal section and telescopically jointed and welded. The welding shall be in accordance with BS-5135. The sections are joined together by slip-stressed-fit method. No site welding shall be done. Only bolted joint shall be done on the mast at the site. The minimum overlap distance shall be 1.5 times the diameter at penetration. The dimensions of the mast shall be decided based on proper design and accordingly design calculations shall be submitted for review / approval.

The mast shall be provided with fully penetrated flange, free from any lamination or incursion. The welded connection of the base flange shall be fully developed to the strength of the entire section. The base flange shall be provided with supplementary gussets between the bolt holes to ensure elimination of helical stress concentration. The entire fabricated mast shall be hot dip galvanised both internally and externally.

1.1.3.3. Door Opening

An adequate door opening shall be provided at the base of the mast and the opening shall be such that it permits clear access to equipment like winches, cables, plug and socket, etc. and also facilitate easy removal of the winch. The door opening shall be complete with a close fitting, vandal resistant, weather-proof door, provided with a heavy-duty double internal lock with special paddle key.

1.1.3.4. Dynamic Loading for the Mast

The mast structure shall designed as per TR No-7 of Institutions of lightning engineers of UK and shall be suitable to sustain maximum reaction arising from a wind speed as per IS-875 (three second gust), and is measured at a height of 10 meters above ground level.

1.1.3.5. Lantern Carriage

A fabricated Lantern Carriage shall be provided for fixing and holding the flood light fittings and control gear boxes. The lantern Carriage shall be of special design and shall be of steel tube construction, the tubes acting as conduits for wires, with holes fully protected by grommets. (The lantern carriage tube should not be used as conduit. Separate flexible conduits are used from CG Boxes to the Flood Light Fixtures) The Lantern Carriage shall be designed and fabricated to hold the required number of flood light fittings and the control gear boxes, and also have a perfect self-balance.

The Lantern Carriage shall be fabricated in two halves and joined by bolted flanges with stainless steel bolts and plastic lock type stainless steel nuts to enable easy installation or removal from the erected mast. The inner lining of the carriage shall be provided with protective PVC arrangement, so that no damage is caused to the surface of the mast during the raising and lowering operation of the carriage. The entire Lantern Carriage is hot dip galvanised after fabrication.

1.1.3.6. Junction Box

The junction box shall be cast aluminium or SS, weather proof IP67 junction box. It shall be provided on the Carriage Assembly as required, from which the inter-connections to the designed number of the flood light luminaries and associated control gears fixed on the carriage, is made.

1.1.3.7. Raising and lowering mechanism

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It will be necessary to lower and raise the Lantern Carriage Assembly to install and maintain the luminaries and lamps. To enable this, a suitable Winch Arrangement shall be provided, with the winch fixed at the base of the mast and the specially designed head frame assembly at the top.

1.1.3.8. Winch

The winch shall be of completely self-sustaining type, without the need for brake, shoe, springs or clutches. Each driving spindle of the winch is positively locked when not in use. Individual drum also should be operated for the fine adjustment of lantern carriage. The capacity, operating speed, safe working load, recommended lubrication and serial number of the winch shall be clearly marked on each winch.

The gear ratio of the winch shall be 53: 1 or as recommended by manufacturer. However, the minimum working load shall not be less than 750 kg. The winch shall be self-lubricating type by means of an oil bath and the oil shall be readily available grades of reputed manufacturers and details of the oil shall be furnished.

The winch drums shall be grooved to ensure perfect seat for stable and tidy rope lay, with no chances of rope slippage. The rope termination in the winch shall be such that distortion or twisting is eliminated and at least 5 to 6 turns of rope remains on the drum even when the lantern carriage is fully lowered and rested on the rest pads. It should be possible to operate the winch manually by a suitable handle and/or by an external power tool. It would be possible to remove the double drum after dismantling, through the door opening provided at the base of the mast. Also, a winch gearbox for simultaneous and reversible operation of the double drum winch shall be provided as part of the contract.

The winch shall be type tested in a reputed test lab/ Institution and the test certificates shall be furnished before supply of materials. Test certificate shall be furnished by the bidder from the original equipment manufacturer, for each winch in support of the maximum load operated by the winch.

1.1.3.9. Head Frame

The head frame, which is to be designed, as a capping unit of the mast, shall be of welded steel construction, galvanised both internally and externally after assembly. The top pulley shall be of appropriate diameter, large enough to accommodate the stainless steel wire ropes and the multi-core electric cable. The pulley block shall be made of corrosion resistant material, and is of the cast Aluminium Alloy (LM-6) or SS. Pulley made of synthetic materials such as Plastic or PVC is not acceptable. Self-lubricating bearings and Stainless steel shaft shall be provided to facilitate smooth and maintenance free operation for a long period. The pulley assembly shall be fully protected by a canopy galvanised internally and externally.

Close fitting guides and sleeves shall be provided to ensure that the ropes and cables do not dislodge from their respective position in the grooves. The head frame shall be provided with guides and stops with PVC buffer for docking the lantern carriage.

1.1.3.10 Stainless Steel Wire Ropes

The suspension system shall essentially be without any intermediate joint and shall consist of only non-corrodible stainless steel of AISI - 316 or better grade.

The stainless steel wire ropes shall be of 7/19 construction, the central core being of the same material. The overall diameter of the rope shall be more than 6 mm keeping in mind contingency. The breaking load of each rope shall not be less than 2350 kg. The design shall have a factor of safety over 5 for the system at full load. The end constructions of ropes to the winch drum shall be fitted with talurit.

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The thimbles are secured on ropes by compression splices. Two continuous lengths of stainless steel wire ropes are used in the system and no intermediate joints are acceptable in view of the required safety. No intermediate joints, either bolted or else, shall be provided on the wire ropes between winch and lantern carriage.

1.1.3.11 Electrical System, Cable and Cable Connections

A suitable terminal box shall be provided as part of the supply at the base compartment of the high mast for terminating the incoming cable. The electrical connections from the bottom to the top shall be made by special trailing cable. The cable is EPR insulated and PCP sheathed to get flexibility and endurance. Size of the cable is minimum 5 core 2.5 sq copper, in case of failure of any core 2 spare cores shall be available. The cable shall be of reputed make. At the top necessary weather-proof junction box to terminate the trailing cable shall be provided. Connections from the top junction box to the individual luminaries is made by using 3 core 1.5 sq mm flexible PVC cables of reputed make. The system shall have in built facilities for testing the luminaries while in lowered position.

Also, suitable provision shall be made at the base compartment of the mast to facilitate the operation of externally mounted, electrically operated power tool for raising and lowering of the lantern carriage assembly. The trailing cables of the lantern carriage rings shall be terminated by means of specially designed, metal clad, multi pin plug and socket provided in the base compartment to enable easy disconnection when required.

1.1.3.12 Lightning Finial

One number heavy-duty hot dip galvanised lightning finial shall be provided for each mast. The lightning finial shall be minimum 1.2 m in length and shall be provided at the centre of the head frame. It shall be bolted solidly to the head frame to get a direct conducting path to the earth through the mast. The lightning finial shall not be provided on the lantern carriage under any circumstances in view of safety of the system.

1.1.3.13 Aviation Obstruction Lights:

LED type aviation obstruction lights of reliable design and reputed manufacturer shall be provided on top of each mast.

1.1.3.14 Earthing Terminals

Suitable earth terminal pad using twin 12 mm diameter stainless steel bolts shall be provided at a convenient location on the base of the Mast, for lighting and electrical earthing of the mast.

1.1.3.15 Luminaries & Fittings:

6 no’s Luminaries specially designed with die cast aluminium housing suitable 120W LED lamp housing shall be provided with each mast. The luminaries shall be suitable for installation on high masts.

Technical Specification of LED Lamp: LED Luminaire efficiency :>100 (Lumen/W), System Power: 120W, Correlated colour temperatures: 5700K, Colour rendering Index:>70, Lumen maintenance: L 70 at 50000 hrs, Operating temperature range:-10 to 50 C, Input voltage: 230 V, 50 Hz, LED driver efficiency:>90%, Driver unit: Unit with inbuilt protection against surge voltage up to 4.5kV, Power factor:>0.95, Surge protection:>10kV, THD:<10%, IP rating: IP 66

Technical Specification of Fitting: Epoxy powder coated die cast aluminium housing with weather proof gasket, Powder coated cast aluminium frame with heat resistant toughened clear glass fixed with SS screw, TB suitable 3c*2.5 sq mm copper cable termination with gland.

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1.1.3.16 Incoming Power Cable Provision Power cable shall be taken to the base compartment of the high mast through the provision made in the foundation.

1.1.4 Tests

All type test certificates for the tests listed in the relevant standards, conducted on identical masts shall be submitted for approval. Routine tests & acceptance tests as per relevant IS shall be conducted as per approved Quality Plan.

1.1.5 Marking / Name Plate

Anodized aluminium Name plate shall include manufacturer name, date of manufacturing, warranty period, 24X7 customer care number and other details as per standards.

1.1.6 Technical Parameters of High Mast:

Sl. No. Particulars Required Parameters

1 Overall height of high mast 12 mtrs 2 Construction

2.1 Material of construction of shaft Grade S355 J O as per BSEN 10025 or equivalent

2.2 Cross section of mast 20 sided, regular continuously tapered polygonal

2.3 Number of sections One

2.4 Minimum thickness of shaft (mm) 4 mm

2.5 Length of individual section (mm) 12000 mm

2.6 Minimum Base and top diameter 340mm (A/F) and 150 mm (A/F)

2.7 Type of joints No site joints, mast should be delivered in single section

2.8 Length of overlap N/A

2.9 Metal protection treatment of fabricated mast section

Hot dip galvanization through single dipping process

2.10 Thickness of galvanizations Minimum 85 microns as per IS:2629

2.11 Size of opening door at base Approx. 250 X 1200 mm

2.12 Type of locking arrangement and door construction

Anti-vandal type

2.13 Details of struck board inside Insulated base board

2.14 Minimum size of base plate diameter 540 mm (min.)

2.15 Minimum size of base plate thickness 25 mm thick

2.16 Minimum size of anchor plate thickness 8 mm

2.17 Details of template Same as anchor plate but 2 mm thick

3 Dynamic loading as prevailing at site

3.1 maximum wind pressure (basic wind speed) 47m/s as per IS:875, p-3

3.2 Maximum gust speed time 3 seconds

3.3 Height above ground level at which wind speed is consider 10 mtrs

3.4 Factor of safety for wind load 1.25

3.5 Factor of safety for other load 1.15

3.6 Application standard for mast design Technical report #7:2000 by ILE, UK 4 Foundation details

4.1 Type of foundation Open raft shallow footing or pile as applicable

4.2 Size of foundation as per design conforming to IS:456

4.3 Design safety factor 2

4.4 Considered wind speed 180 m /s

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4.5 Depth of foundation As per requirement of design

4.6 Average soil bearing capacity As per site condition

4.7 Numbers of foundation bolts 6 no’s

4.8 PCD of foundation bolts 440 mm (min.)

4.9 Type of foundation bolt Tor steel

4.10 Bolt diameter / length 25mm dia / 750 mm

5 Lantern Carriage

5.1 Diameter of Carriage Ring Suitable to carry up to 6 nos. floodlights

5.2 Construction MS Channels / Tube, Hot dip galvanized

5.3 Number of joints

As per manufacturer's standard design (2 segments as per Cl no.4.5)

5.4 Buffer arrangement between carriage and mast

Rubber padded guide ring provided

5.5 Load carrying capacity 500 kg

5.6 Total weight of assembly with fitting as per design

6 Winch

6.1 Number of drums/ winch Double drum

6.2 Capacity SWL 500 kg

6.3 Method of operation Manual

6.4 Lubricant Arrangement Permanent oil bath

6.5 Material of construction of gear Phosphorus Bronze / EN 19

6.6 Tested load per drum 500 kg

6.7 SWL of winch at 410 rpm 500 kg SWL 7 Wire rope

7.1 Grade AISI 316

7.2 Number of ropes 3 no’s / 5mm (three wire rope)

7.3 Construction 7/19

7.4 Diameter of Wire rope 5mm

7.5 Factor of safety Not less than 5

7.6 Breaking capacity Minimum 2350Kgs. X 2

8 Cable

8.1 Type EPR coated PCP

8.2 Material Multicore copper conductor

8.3 Make Finolex, torrent, Polycab, KEI, Havells Havells

8.4 Current carrying capacity As per IS 9968 (Part - 1), 1998

8.5 conductor size 5CX2.5 sqmm.

9 Torque limiter

9.1 Lifting capacity Upto 500 kg

9.2 Adjustable / non adjustable Adjustable

10 Lantern and Fixture

10.1 Type Of Lamp LED IP65 fitting

10.1.1 Wattage 120W

10.2 Housing Single piece gravity die-cast

10.2.1 Material Aluminium alloy: LM6

1.2 Technical Specification of Feeder Pillar 1.2.1 General

The feeder pillar shall be free standing with complete front access for operation and maintenance. The feeder pillar shall be fixed type in single front execution, assembled in single

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line up, metal enclosed, compartmentalised, totally segregated compartments for feeders, cables and bus bar, dust and vermin proof suitable for outdoor installation (IP-55 with rain canopy).

All hardware shall be corrosion resistant. All joints and connections of the panel members shall be made of galvanised or zinc passivated cadmium plated high quality steel bolts, nuts and washers secured against loosening. All openings, covers and doors shall be provided with gaskets around the perimeter to make the feeder pillar dust and vermin proof. Suitable lifting hooks shall be provided for each shipping section for ease of lifting of feeder pillar.

The feeder pillar shall comprise of incoming MCCB with required protection ammeter voltmeter indication lamps, outgoing star-delta motor starter with required protection start-stop push button indication lamps, heavy duty shunt capacitor with contactor MCB, MCB feeders for High Mast & other load, bus bars, cable termination compartments etc. All components including bus bars and cable termination shall be accessible only from the front side for repair and maintenance. Components requiring frequent inspection during operation shall be easily accessible.

1.2.2 Constructional Features

The feeder pillar shall be made out of 2 mm CRCA sheet steel. Panel shall have powder coated finish to shade 631 of IS 5 after pre-treatment and standard black enamel paint. Cable entry shall be at the bottom and through a detachable gland plate. Label shall be aluminium anodized. Stand for mounting shall be made out of 40x40x5 MS angle. Feeder pillar shall have pad-locking arrangement.

1.2.3 Busbars

The phase and neutral bus bars shall be of rating indicated in the BOQ. Bus bars shall be of aluminium and shall be provided with minimum clearances as specified in relevant IS. All bus bars and bus taps shall be insulated with close fitting sleeve of hard, smooth, dust and dirt free, heat shrunk PVC insulation of high dielectric strength, to provide a permanent non-ageing and non-tracking protection, impervious to water, tropical conditions and fungi. The insulation shall be non-inflammable and self-extinguishing type and in fast colours to indicate phases. The dielectric strength and properties shall hold good for the temperature range of 0 to 95 degree centigrade. If the insulating sleeve is not coloured, bus bars shall be colour coded with coloured PVC tape at suitable intervals. Bus bar joints shall be of the bolted type. Spring washers shall be provided to ensure good contact at the joints. Bus bars shall be thoroughly cleaned at the joints and suitable contact grease shall be applied just before making a joint. Direct access to, or accidental contact with bus bars and primary connections shall not be possible. All apertures and slots shall be protected by baffles to prevent accidental shorting of bus bars due to insertion of maintenance tools. Sequence of red, yellow and blue phases and neutral for four-pole equipment shall be left to right and top to bottom, for horizontal and vertical layouts respectively.

1.2.4 Moulded Case Circuit Breaker (MCCB)

MCCBs shall be of the air break, quick make, quick break and trip free type and shall be totally enclosed in a heat resistant, moulded, insulating material housing. MCCBs shall have an ultimate short circuit capacity not less than the prospective short circuit current at the point of installation. MCCBs shall have a service short circuit breaking capacity equal to the ultimate short-circuit capacity. Each pole of MCCB shall be fitted with a bi-metallic thermal element for inverse time delay protection and a magnetic element for short circuit protection. Alternatively, they shall be fitted with a solid state protection system. Such a protection system shall be fully self-contained, needing no separate power supply to operate the circuit breaker tripping mechanism. Thermal element shall be adjustable. Adjustments shall be made simultaneously on all poles from a

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common facility. Thermal elements shall be ambient temperature compensated. The MCCBs shall be provided with the following features: Common trip bar for simultaneous tripping of all poles, Shrouded terminals, Time for clearing short circuit current of 20 msec, 2 NO + 2 NC auxiliary contacts

1.2.5 Miniature Circuit Breaker (MCB)

MCB shall be hand operated, air break, quick make, quick break type. Operating mechanisms shall be mechanically trip-free from the operating knob to prevent the contacts being held closed under overload or short-circuit conditions. Each pole shall be fitted with a bi-metallic element for overload protection and a magnetic element for short-circuit protection. Multiple pole MCBs shall be mechanically linked such that tripping of one pole simultaneously trips all the other poles. The magnetic element tripping current classification shall be of the type suitable for the connected load. Where this is not specified, it shall be Type C. The short circuit rating shall be not less than that of the system to which they are connected.

1.2.6 Contactors

The power contactors used in the feeder pillar shall be of, air break, single throw, triple pole, electromagnetic type. Contactors shall be suitable for uninterrupted duty and rated for Class AC3 duty in accordance with the latest edition of IS 13947. Operating coils of all contactors shall be suitable for operation on 240 V, single phase, 50 Hz supply. Contactors shall be provided with at least two pairs of NO and NC auxiliary contacts. Contactors shall not drop out at voltages down to 70 % of coil rated voltage. Contactors shall be provided with a two element, positive acting, ambient temperature compensated, time lagged, hand reset type thermal overload relay with adjustable settings. The hand reset button shall be flush with the front door of the control module, and shall be suitable for resetting the overload relay with the module door closed. Relays shall be either direct connected or CT operated. Overload relay and reset button shall be independent of the "Start" and "Stop" push buttons. All contactor shall all be provided with single phasing preventer (SPP). Motor starters shall be complete with auxiliary relays, timers and necessary indications.

1.2.7 Instrument Transformers

Current transformer (CT) shall have polarity markings indelibly marked on each transformer and at the lead terminations at the associated terminal block. CT shall be able to withstand the thermal and mechanical stresses resulting from the maximum short circuit current. CT core laminations shall be of high grade silicon steel. Secondary winding of voltage transformer (VT) shall be rated for a two phase line to line voltage of 110 V. Identification labels giving type, ratio, output and serial numbers shall be provided.

1.2.8 Relays

Protective relays shall be Static type. All relays shall be enclosed in rectangular shaped, dustproof cases and shall be suitable for flush mounting. All relays shall be accessible from the front for setting and resetting. Access to setting devices shall be possible only after the front covers of the relays are removed. Resetting facilities shall however be accessible external to the relay case. All protective relays shall be of the draw-out type and shall be provided with operation indicators visible from the front. Auxiliary relays and timers shall be rated to operate satisfactorily between 70 % and 110 % of the rated voltage.

1.2.9 Control and Selector Switches

Control and selector switches shall be of the rotary type, having enclosed contacts, which are accessible by the removal of the cover. Control and selector switches for instruments shall be flush mounted on the front of the panels and desks. All control switches shall be of the spring return to normal type and shall have momentary contacts. Selector switches shall be of the stay-put, maintained contact type.

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1.2.10 Indicating Instruments & Meters

Electrical indicating instruments shall be 96 mm square with accuracy of Class 1.0. 1.2.11 Indicating lamps

Indicating lamps shall be of the cluster LED type, with low watt consumption. Indicating lamp shall be of the double contact, bayonet cap type rated for operation at either 240 V AC or at the specified DC system voltage as applicable. Lamps shall be provided with translucent lamp covers. Bulbs and lenses shall be interchangeable and easily replaceable from the front.

1.2.12 Push Buttons

"Start" and "Stop" push buttons shall be coloured green and red respectively. Stop Push Button shall be lockable stay-put type with Mushroom head. Colours of push buttons shall generally comply with IS6875, BSEN 60947, 60 0 37 or IEC 60073.

1.2.13 Space Heaters

Adequately rated anti-condensation space heaters shall be provided. Space heater shall be of the industrial strip continuous duty type, rated for operation on a 240 V, 1 phase, 50 Hz, AC system. Each space heater shall be provided with a single pole MCB with overload and short circuit release, a neutral link and a control thermostat to cut off the heaters at 450 C.

1.2.14 Safety Arrangements

All terminals, connections and other components, which may be “live” when front access door is open, shall be adequately screened. It shall not be possible to obtain access to an adjacent cubicle or module when any door is opened. Components within the cubicles shall be labelled to facilitate testing.

1.2.15 Power and Control Cable Terminations

Equipment terminal blocks for power connections shall be complete with adequate phase segregating insulating barriers, shrouds and suitable crimping type of lugs for terminating the cables. Double compression type cable glands shall be provided for all power and control cables. Earthing connectors between cable armour and earth shall be routed outside the cable gland in an approved manner. Gland insulation shall be capable of withstanding a high voltage test of 3000 V for one minute.

1.2.16 Wiring for Control and Protective Circuits

All wiring for control, protection and indication circuits shall be carried out with 650 V grade, FRLS PVC insulated cable with stranded, tinned copper conductor of minimum 1.5 sq. mm size. The size of conductor for CT circuits shall be minimum 2.5 sq. mm. All wiring shall be run on the sides of panels and shall be neatly bunched and cleated without affecting access to equipment mounted in the panel. All wiring shall be taken to terminal blocks without joints or tees in their runs. Spare auxiliary contacts of electrical equipment shall be wired to terminal blocks.

All wiring shall be colour coded as given below: Instrument Transformer: Red, Yellow or Blue determined by the Circuit phase with which the wire is associated A C phase wire : White A C neutral : Black D C circuits : Grey Earth connections : Green

1.2.17 Control Wiring Terminal Blocks

Terminal blocks shall be of the 650 V grade and stud type. Brass stud of at least 6 mm dia. with fine threads shall be used and securely locked within the mounting base to prevent turning.

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Each terminal shall comprise two threaded studs, with a link between them, washers, and matching nuts and locknuts for each stud. Connections to the terminals shall be at the front. All wiring shall be terminated on terminal blocks, using crimping type lugs or claw type of terminations.

1.2.18 Earthing

Feeder Pillar shall be provided with two earth stud located at the bottom of the board/panel. Earth bus bar shall be suitably rated to carry the rated symmetrical short circuit current of the feeder pillar for one second, unless otherwise specified. Earth bus bars shall be properly supported to withstand stresses induced by the momentary short circuit current of value equal to the momentary short circuit rating of the feeder pillar. All instrument and relay cases shall be connected to earth bus bar by means of 650 V grade, green coloured, PVC insulated, stranded, tinned copper, 2.5 sq. mm conductor looped through the case earth terminals.

1.2.19 Routine Tests The following routine tests shall be carried out on the assembled feeder pillar during inspection at the manufacturer’s works in addition to other tests: One minute power-frequency voltage dry withstand tests on the main circuits, One minute power-frequency voltage dry withstand tests on the auxiliary circuits, Operational checks.

1.3 Technical Specification of LT XLPE CABLE 1.3.1 Scope

The specifications cover requirement of 650 / 1100 Volts grade solid/stranded, Copper/Aluminum conductors, XLPE insulated and sheathed galvanised round/flat steel wire armoured and PVC overall sheathed cables.

1.3.2 Code and Standards

The cables shall comply with all currently applicable IS / IEC Standards, Electricity Rules, approval of Fire Insurance Association and Electrical Inspector. Unless otherwise specified, cable shall conform to the following latest applicable Standards.

IS 1554,Part -I 1988 PVC insulated (heavy duty) electric cables

IS 7098,Part-II 1985 Cross linked polyethylene insulated PVC sheathed cables

IS 8130 1984 Conductors for insulated electric cables and flexible cords

IS 5831 1984 PVC insulation and sheath of electric cables

IS 3975 1999 Mild steel wires, strips and tapes for armouring of cables

IS 10810,Part 41

1984 Methods of test for cables : Mass of zinc coating on steel armour

IS 209 1992 Specification of zinc

IS 3961 Part-2 1967 Recommended current ratings for cables: Part – 2 PVC insulated and PVC sheathed heavy duty cables

IS 10418 1967 Drums for electric cables

IS 10810 Part 58

1982 Method of test for cables : Part 58 Oxygen Index test

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IS 10810 Part 61

1984 Method of test for cables : Part 61 Flame Retardant test

IS 10810 Part 62

1984 Method of test for cables : Part 62 Fire Retardant test for bunched cables

IEC 332-3 Tests on electric cables under fire conditions

IEC 502 1994 Extruded solid dielectric insulated power cables for rated voltages from 1KV up to 30KV

IEC 540 & 540A 1979 Test methods for insulation and sheaths of electric cables and cords

ASTM D2863 Standard method of test for flammability of plastics using oxygen index method

IS 4288, 1988 PVC insulated and PVC sheathed solid aluminium conductor cables of voltage rating not exceeding 1100 Volts

IS 694, 1990 Specification for PVC insulated cables for working voltage up to and including 1100 volts.

The cables and accessories shall also conform to the provisions of Indian Electricity Rules and relevant statutory regulations.

1.3.3 Climatic Conditions

Cables shall be installed in air / ground, in atmosphere having maximum ambient temperature and relative humidity as per prevailing site condition.

1.3.4 Constructional Requirement

1.3.4.1 Conductor

The material of conductor shall be Electrical grade high conductivity, compacted, aluminium / copper. Conductor shall be solid for conductor of nominal area up to and including 4 sq.mm and stranded beyond 4 sq.mm. Conductors of nominal area less than 25sq.mm shall be circular or sector shaped. Cables with reduced neutral conductor shall have sizes as per table 1 of IS 1554 (part-1). Cables up to and including 4 sq. mm shall be of Cu and above 6 sq. mm shall be of Al unless specified otherwise. Strand details shall be preferably as below: 6 to 10 sq mm [CU/AL] - 7 strands 16 to 50 sq mm [CU/AL] - 7 strands 70 to 150 sq mm [CU/AL] - 19 strands

1.3.4.2 Insulation

The material of insulation shall be Cross Linked Polyethylene applied over the conductor by extrusion. Insulation shall be free from contamination and water voids and shall withstand all mechanical and thermal stresses under steady state and transient operating conditions. The thickness of the insulation shall be as per IS: 7098 (part II).

1.3.4.3 Inner Sheath

The inner sheath shall be applied over the cores by a method of extrusion and shall be of PVC conforming to the requirements of Type ST-1 PVC compound as IS: 5831. The thickness of inner sheath shall be as per relevant standards. There will be no sheath for single core cables, in case of single core when there are both metallic screening and armouring there shall be extruded inner sheath between them.

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1.3.4.4 Armouring

If armouring is specified for multicore cables, the same shall be single round galvanised steel wires / galvanised steel strips as per the requirement. If armouring is specified for single core cables, the same shall be with H4 grade hard drawn aluminium round wire of 2.5 sq.mm diameter. Requirement and methods of tests for armour material, galvanising uniformity and dimensions of armour shall be as per relevant standards.

1.3.4.5 Outer Sheath

This shall consist of extruded ST-1, PVC compound having oxygen index value of minimum 28 % at 27 ± 2 deg. C, is resistant to termite and rodent attack. Outer sheath shall be of black colour, external surface of which shall be embossed with voltage designation and manufacturer’s name at regular interval. The thickness of outer sheath shall be as per IS: 1554 – part 1. Sequential marking of the length of the cable in metre shall be provided on the outer sheath at every one metre. The embossing / engraving shall be legible and indelible. PVC / Rubber end caps shall be supplied free of cost for each drum with a minimum of twenty per thousand metre length. Outer sheath with FRLS compound shall be provided for better fire resistance.

1.3.4.6 General Requirements

The cables shall be suitable for laying in trays, trenches, ducts, conduits and for underground buried installation with uncontrolled backfill and possibility of flooding by water and chemicals. Cables shall be suitable for keeping in a proper looped position for longer period without occurring of any damage to the insulations and armour. The material of conductors shall be from annealed high conductivity Copper / Aluminum. Conductor shall be of either circular or sector shaped stranded conductor or circular solid construction as specified in data sheet. Cables shall be supplied wound on non-returnable wooden drums of heavy duty construction and of suitable barrel diameter and shall be covered fully with wooden battens. Wooden drums shall be properly seasoned and treated with anti-rodent material and painted with good quality paint to increase the life of the drum. Ferrous parts used shall be treated with a suitable rust preventive finish or coating to avoid rusting during transit or storage. Drums shall be suitably marked with manufacturer’s name, customer’s name, project title, cable type, size, voltage grade of cable, length of cable in metres, drum number, IS certification mark, gross weight, rolling direction etc. as per BIS/BS.

1.4 Technical Specification of Installation of Cables

The Contractor shall install, test and commission the cables in accordance with the approved drawings and IS-1255. Cables shall be laid directly buried in ground, on cable racks, in built up trenches and supports, on trays, in conduits and ducts or bare on walls, ceiling etc. as the case may be as per site condition and as per approved drawings. Contractor's scope of work includes unloading, laying, fixing, jointing, bending, and termination of the cables. The Contractor shall also supply the necessary materials and equipment required for jointing and termination of the cables. Sharp bends and kinks in cables shall be avoided. The bending radii for various types of cables shall not be less than 15 times the overall diameter of the cable. For road crossings, the pipe for the cables shall be buried at not less than one metre depth. Care shall be taken to avoid sharp bending or kinking cables, damaging insulation or stressing cable beyond manufacture's recommendations in pulling. Cable shall be protected at all times from mechanical injury and from absorption of moisture at unprotected ends.

1.5 Technical Specification of Earthing System 1.5.1 Scope

The scope includes supply of earth electrode pits and earthing conductors and their installation including associated civil work as per specifications to the satisfaction of the Employer’s

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representative and the Electrical Inspector. Proper earthing shall be provided to ensure adequate equipment and personnel safety.

1.5.2 Earthing System Installation

Earthing system shall conform to the latest edition of IS: 3043 and Indian Electricity Rules, 1956. All materials and fittings used in the earthing installation shall conform to the relevant Indian standards. Metallic frames of all 415 V/ 240 V electrical equipment shall be earthed by two/one separate and distinct leads and then connected with earthing system. Cable sheaths and armour shall be bonded to the earthing system. Metal pipes and cable conduits shall be effectively bonded and earthed. Separate & independent earthing pit & conductor shall be provided for lightning finial. Neutral connection shall never be used for equipment earthing. Wherever earthing conductor crosses underground service duct and pipes, it shall be laid 300 mm below them. If the distance is less than 300 mm, the earthing conductor shall be bonded to such service ducts/pipes. Wherever earthing conductor passes through walls, Galvanized Steel (GS) sleeves shall be provided for the passage of earthing conductor. The pipe ends shall be sealed by suitable water-proof compound. Water stops shall be provided where earthing conductor enters the building from outside, below grade level. All connections in the main earth conductors buried in earth/concrete shall be welded type. Connection between earthing conductor and earth leads shall also be of welded type. Connection between buried MS conductor and GS conductor above ground shall be done above ground. Connection between earth leads and equipment’s shall be of bolted type.

1.5.3 Earth Electrode Pits

Electrodes shall, as far as practicable, be embedded below permanent moisture level. Test pits shall be provided for periodic testing of earth resistance. Installation of pipe electrodes in test pits shall be suitable for watering. The necessary materials required for installation of test pits shall be supplied and installed by Contractor. The installation work shall also include civil works such as excavation/drilling.

G) Play/Gym Equipments

Statement Showing (Approximately) Quantity to Be Brought By the Contractor at His Own Cost for the Work

Ser No

Name of Material

Approximate Quantity to be

stipulated unit Particulars

1 2 3 4 5

1 Cement MT One Metric

Tonne

1) All the materials are to be procured and brought by the contractor at the site at his own risk and cost.

2)

Physical properties shall be confirmed with M.O.S.T./I.S./ I.R.C specification.

2 T.M.T. Steel MT

One Metric Tonne

3)

Stipulated test shall be carried out by the contractor at his own cost as per the frequency.

4) Custody of material shall be sole responsibility of the contractor.

Tonne 5) The proof of purchase of all materials

should be produced during the execution

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of work and along with bill

6) The grade of cement shall be got

approved from the Engineer – in- Charge

Conditions for the Materials to be procured by The Contractor

Cement

Cement to be used for the work shall comply the following and shall be used with the prior approval of Engineer –in –charge.Ordinary Portland cement confirming to the I.S.: 8112 shall be used. Independent testing of cement used shall be done by the contractor at site and in the laboratory approved by the Engineer before use. Any cement with lower quality than that shown in the manufactures certificate shall be debarred from use. In case of finally ground cement or imported cement, the Engineer may direct the contractor to satisfy him as to the acceptability of such cement, especially with regard to creep and shrinkage effect. Any consignment or part of a consignment of cement, which has deteriorated in any way, shall not be used in the works and shall be removed from the site by the contractor without charge to the employer. Cement shall be transported, handled and stored on the site in such a manner as to avoid deterioration and contamination. Each consignment shall be stored separately so that it may be readily identified and inspected and cement shall be used in the sequence in which is delivered at site. The contractor shall prepare and maintain proper records on site in respect of the delivery, handling storage and use of cement and these records shall be available for inspection by the Engineer at all times. T.M.T Steel

TMT bars shall comply with IS: 1786 and “Mild Steel” bars shall comply with IS: 432. All reinforcement shall be free from rust loose mill scale or coats of Oil, Paints etc. which may destroy bond and protected by anti corrosive treatment before placing in position for concreting. The agency should use the steel manufactured by the Main Producers only. No re-rolled steel shall be permitted to be used for this work. Decision about the main producers of the steel will be given by Engineer in charge and his decision shall be final & binding on all parties. Rejection of Materials not conforming to specification:

Any Stock or batch of material(s) of which sample(s) does not confirm to the prescribed test and quality, shall be rejected by the Engineer or his representative and such materials shall be removed from site by the contractor at his own cost. Such rejected materials shall not be made acceptable by any modifications. Materials not corresponding in character and quality with approved samples will be rejected by the Engineer or his representative and shall be removed from the site immediately and will not be allowed to use for any component of work. Additional Conditions for Cement, Steel, Bitumen Brought By the Contractor

1) All the materials required for construction of work shall be arranged by the contractor at his own cost. The samples of material to be procured shall be got approved by the Engineer-in-charge and material as per approved samples shall only be procured.

2) The contractor shall submit periodically as well as on completion of work, an account of all materials brought by him in a manner as directed by Engineer-in-charge. The contractor shall also furnish monthly account of materials; a separate register shall be maintained on site for recording daily item wise receipt and consumption of Cement, Steel and Asphalt used by him, also item wise consumption of other materials used. This register shall be signed daily by the contractor or his representative and representative of Engineer-in-charge.

3) All the materials required for the work shall be brought by the contractor at his own cost. In each case, certificate for its quality and quantity shall be produced by the contractor at his own cost and the test results of samples shall be supplied to the Department. The material not confirming to the required standard shall be removed at once from the site

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of the work by the Contractor at his own cost. 4) Testing of all construction material shall be carried out as per required frequency and

specifications and the charges for testing shall be borne by the contractor 5) All the testing charges for mix design etc. if necessary on construction work shall be

borne by the contractor. 6) The contractor shall construct shed / sheds as per direction of the Engineer-in-charge

of the work for storing the materials brought at site. The material shall be taken out for use in the presence of the departmental representative only.

7) The contractor shall make his own arrangement for the safe custody of the materials which are brought for construction of work.

8) The contractor shall not transfer any material once brought at work site without prior written permission from Engineer-in-charge and for bonafied reasons only.

9) In case the materials brought by the contractor become surplus owing to the change in the design of the work, the materials should be taken back by the contractor at his own cost after prior permission of the Engineer-in-charge.

10) The charge for conveyance of materials from the place of delivery to the site of work and the actual sport on work site shall be entirely borne by the contractor. No claims on his account shall be entertained.

11) The contractor shall furnish the account of cement, steel, asphalt brought by him at each time before placing orders for further supply. Also the same should submit on completion of the work, final account of the materials used by him to the Department. This account will be scrutinised by the Engineer-in-charge.

12) All empty cement bags or empty asphalt drums shall be the property of contractor and the same shall be removed immediately after completion of work.

13) The contractor shall procure the pipes if required for this work from M.S.S.I.D.C. only. Proof of purchasing of pipe should be submitted.

14) Agency shall ensure that the laying temperature of hot mix material shall be as specified and accordingly he shall make arrangements for preventing loss of temperature of hot mix material during transit from location of drum mix plant to work site.

Quality Control Tests & Their Frequencies.

Ser No

Material Test Frequency of Testing Remarks.

1 Sand i) Fineness Modules ii) Silt Content

At the beginning & if there is change in source.

2 Metal i) Crushing Value ii) Impact Value iii) Abrasion value iv) Water Absorption v) Flakiness Index vi) Stripping value vii) Gradation

One test per 200 cum or part there of.

PWD hand book I.S.2386 Part-IV

3 Cement Concrete

Comp. Strength

Upto 5 cum - 1 set M.O.RT H.

6 - 15 - 2 sets specification 1716

16 - 30 - 3 sets (Fourth revision 01 )

31 - 50 - 4 sets 51 & Above - 4 sets +

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1 additional set for each

50 cum or part thereof.

4 Cement i) Comp. Strength One test for each I.S. 8112 -1989

ii) Initial setting time consignment of 50 MT

iii) Final setting time (1000 bags) or part

iv) Specific Gravity Thereof.

v) Soundness

vi) Fineness

5 Steel (i) Weight per meter

(ii) Ultimate Tensile

(iii) stress

(iv) Yield stress

(v) Elongation

One test for every 5.0 METRIC TONNE or part thereof for each diameter.

I.S. 432 IS 1786-1985

The contractor shall have to make his own arrangement for bringing the water from outside. i) For R.C.C. items, the wording, finishing the formed surface with C.M. 1:3 of sufficient

minimum thickness to give a smooth and even surface is meant only for repairing the honeycombed surfacces and it does not include plastering of the whole of the surface.

ii) Claim for change in (i) depth of foundation (ii) height of storey (iii) plinth height shall not be paid to the contractor.

Detailed Specifications Play/ Gym Equipments Materials

All materials shall be of first grade quality as per specified standard sections in accordance with relevent I.S. code provisions.

I. G.I. Pipes:- The G.I. Pipe of 'B' Class of approved make Viz. Zenith / TATA / Jindal /

Surya Roshni with I.S. 1239 ( part i ) 1979, with UV. U.V stabilised pure polyster powder coating shall be used.

II. M.S. Angles:-All M.S. Angle shall be in accordance with I.S. 226 of 1975 (Latest) and

of CIDCO approved make Viz. Jindal Power / TATA / Bhushan with U.V. stabilized pure polyster powder coating shall be used.

III. Electrical Welding Rods: - Electrical welding rods shall be manufactured by advani

oerliken or sunarc equipment. The welding rods shall not be kept in open environment much before in use as it may get affected by water vapors from the air, which may be result in priority defect in the weld.

IV. Nut Boalts & Other Fasteners: - Galvanised iron nuts, bolts, and other fasteners must

be used for all moving and non-moving type of play equipment. All the fasteners used shall be standard ones.

Jointing

The jointing work shall be done by metal inter welding process. The welded joint shall be ground with electric surface grinder and finally polished the ground surface are then finished with epoxy sealant of m-seal brand. Utmost care shall be taken while welding ensure that won't be any under cuts or foreign particles entrapment or hydrogen embitterment in the welded joints. Bending

During bending operation it is ensured that there won't be any deformation in the diameter of the pipe more than 1.2 times the dia. This shall be achieved by use of slip gauges, and the usage of special bending dies suitable for different diameter. All the bending are done by using mechanical bending machine, to give the perfect curves.

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Drolling

All the holes shall be drilled by the use of specially designed hardened drilling fixtures to ensure repeatability and interchange ability of the components. Cutting

All the cutting shall be done by the use of bend saw machine and cross cutting machines to ensure linearity and exact length. Planting

All the plated parts shall be of hot dipped galvanized or electro galvanized which shall be passivated and thickness of all plating are ensured to be minimum of 10 microns. FRP Material

All the fiber reinforced plastic (FRP) material shall be processed by the hand laid wherein the process it as follows: After the preparation of the mould process which is considered to be the best of its type in the shall be done a layer of gel coat is applied which is of N.P.G which is duly mixed with U.V stabilized pigment to give the required colour to the product. Then a coat of G.P. resin above the surface of the gel coat after it becomes tack free. PIT Information: The fixing shall be done in C.C. 1:11/2:3 grade PCC with minimum 45 cm X

45 cm X 45 cm deep size pit. The constitutive layers C.S.M (chopped streand matt.)

Glass fiber shall be laid down along wih resin to the required extend to build up the required thickness in sandwich pattern.

The back side coating of the resin shall be done to give a smooth finish.

The moulds are to be kept open to dry for a specificed duration. This procedure strengthens the F.R.P.

After the mould shall be completely cured for the specified duration the FRP shall be removed from the mould. Then all the cornes and edges of it shall be removed from the mould. Then all the corners and edges of it shall ground to make them smooth and harmless from the strands of the glass wool.

Painting Process

All the items that are to be painted are first to be made free from. Any burr and welding spots are ground to finish and cleaned with degusting chemical solutions and phosphating is done then all the welded joints are applied with epoxy sealant to avoid any exposure to atmosphere so that further corrosion is not going to take place. Beside the sealing process it gives smooth and better aesthetics to the product. The powder is to be sprayed onto the items by means of static electric gun at 8000 volts, ensure uniform powder thickness all over. The thickness to be maintained shall be minimum of 60 to 80. Micron. (Dry films thickness) The coated product is then to be cured in oven at 200 degree Celsius for twenty minutes. Inspection

All the raw materials and parts shall be inspected for any defects like scratches, dents, cracks and similar shortcoming. The in-process parts shall be inspected while working on them by the skilled operator themselves and by the supesvisior for matching ability and conformance to the dimension. The agency shall carry out 100% inspection of the final goods produced for the conformation with specification. All the parts assemblies shall be checked for their matching with corresponding parts and their interchangeably. Packing

All the equipment manufactured, painted and rested for quality are to be packed to make them ready for dispatch. This packing facility in order to provide dirt and scratch proofing. For any additional specification the work shall be executed as directed by engineer in charge.

General Materials Specifications

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Pipes

All pipes shall be galvanized steel confirming to IS: 1239 (part) of reputed make like TATA, Zenith, and Jindal Bhushan (NB = Nominal Bore i.e inner diameter) of 'A' Class with stabilized pure polyester powder coating. Fibreglass Reinforced Plastic

All FRP product shall be made of top quality polyester resin of reputed brands and virgin standard glass made of reputed brand only. The molding of FRP is done by contact molding and has a minimum tensile strength of 60 mpa. The FRP products to be all self pigmented, food grade materials with U.V stablized. Rotomoulded Plastics

I. LLDPE and HDPE with self pigmented colour and U.V stabilized shall be use in the roto moulded plastic product. The product are seamless for long life and durability ( LLDPE : Linear Low Density Poly

II. Ethyelene & HDPE: High Density Poly Ethylene. Swing Seats

It shall be made of synthetic rubber reinforced with heavy duty canvas & has a chequered and water silence.

Bearings

All bearing shall be of reputed make (SKF) & press fitted for smoot rotation with lubricant and water silence. Faterners

All bolts & nuts totally galvanized. Fabrication

All steel components shall be welded by electric are welding using the best quality welding rods confirming to IS: 814. All welded joints are to be properly rounded & coated with an epoxy sealant for rust resistance. All sheet components shall be galvanized for rust resistance. Power Coating

The powder is to sprayed onto the substrate by means of static electric gun at 8000 volts, ensure uniform powder thickness all over. The thickness maintained shall be a minimum of 60 to 80 microns. (Dry films thickness) The coated product is then cured in oven at 200 degree Celsius for twenty minutes.

Manufacturing

The relevant Indian, British & European standard shall be followed for playground equipment as BN 1176 : 1999 parts 1 to 7 IS : 1239 (Part 1) 1990 : mild steel tubes tubular and other wrought steel fitting part 1 mild steel tubes (fifth revision) IS : 1363 (part 1) 1992 : hexagon head bolts, screws and nuts of product grade c : part 1) hexagon head bolts (size range m5 to m64) third revision) part3) 1992 : hexagon head nuts (size range m5 to m64) third revision) IS : 2429 (PART1) 1987 : round steel short link chain (electric butt welded), grade 1 (3) part 1 non-calibrated load chains for lifting purpose (third revision) IS : 3109 (part 2) 1982 : short link chain, grade m (4) part 2 calibrated lad chain for pulley blocks and other lifting appliances (second revision ) IS : 6869 (part 1) 1973 : playground equipment for parks : part 1 general requirements. Fixing

Designing, fabricating, manufacturing, transporting to site, assembling and installation of the play equipments in position at site with cement concert 1 : 1 1/2 : 3 grade P.C.C. with M.S. Base plate in a pit of 45 cm x 45 cm x 45 cm deep including excavation, concreting, fixing as required at the site with all labours, materials, royalties & taxes etc. complete.

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Note: The item includes 12 months warrantee with minimum 4 times visits for maintenance

such as oiling, greasing & nut-bolts tightening etc.

1.11 Approval of Construction Drawings

The Contractor will submit the following construction drawing, as per the scope of work shall submit to engineer-in-charge for approval with in 21 days of completion date of work:-

1. Plantation for shrubs, hedges, trees

Proper layout of tree, shrubs ,hedges placement

Sizes of pits (depth ,length ,width )

Placement layout of plants .(Detailed diagram )

Cleaning /Beautification around trees /shrubs detailed drawings

Brick lining details

If C.C toe wall provided: - detail drg (Foundation + Finishing detail ) Planter

Overall layout plans

Detailed Layout plan

Detailed section

Elevation

Finishes Detailed drawings

Const.detailed drawings

2. Play equipments

Detailed plan layout drawings of every equipment

Elevations/sections of play equipments.

Foundation and fixing details.

3. Boundary wall

Detail of foundation (if proposed)

Detail of treatment of walls (finishes)

Layout plan

Detailed section of boundary walls.

4. Railing details

Railing design details

Railing plan layout drawing.

Railing elevation drawing

Railing members/sections fixing details

Railing fixing details to walls

Finishing details of railing.

5. Entries details

Gates open able or wickets layout plan drawings

members /section details (if proposed)

Fixing details to adjoining walls (if proposed)

6. Pathways:- For interlocking paver pathways

Detailed section of pathways

Layout plan of pathways

Fixing detail of interlocking paver tiles

For Kachha Pathways

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Fixing detailed layout plan of Brick laying on edges

Sectional detail of pathway.

7. Turfing

Layout pattern drawings turfing of lawn (if design provided) .

8. Electrical works

Layout plan of bollards

Fixing of bollards –fixing details /foundation details

Conduits /Trenches Details

Service drawings :- Wiring layout plans ,control layout drawings

9. Sprinkler system

Overall Layout plan of sprinkler system of park

Details of piping layout (segment wise) main to secondary layout.

Placement of sprinkler layout drawings

Controlling layout of sprinkler system.

10. Borewell

Connectivity layout of bore well to sprinkler/manual system layout plan.

Detailed drawing of drilling system.

11. Garden Furniture/other items Trash Bin

Detailed fixing drawing of trash bin to holder.

Holder to ground fixing details –foundation details Benches

Proper layout plan of benches.

Sections fixing of bench to ground

Foundation detail of base drawing. C.C sitting

Detailed layout drawings

Finishes and treatment drawings

Construction detail drawing of C.C Sitting

Foundation detail drawings

Signage’s

Layout plan of signage’s

Detailed drawings of signage’s :- section ,elevation,fixing detail of signage’s

12. Gazebos/Rainshelter

Detailed Plan layout.

Detailed section,

Base/floor detail –material /sub layers details

Section of truss details

Fixing details of each and every members.

Sheeting fixing details

Foundation details.

Finishes details drawings

Drainage Drawings

13. Repair works toilet (if required)

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Detailed layout of existing toilet

Detailed layout of Proposal.

Detailed sections cross section ,Longitudinal sections

Detailed elevations – all four directions

Finished details drawings.

Existing steps and ramps details drawings

Finishes detailed drawings

Detailed section + layout plans.

14. Sections of site

Overall cross section of site

Overall Longitudinal section of site

15. Mounds

Detailed Grid layout plans.

Detailed section of mounds.

16. Wicket /Main gate

One main gate for vehicle entrence on main road side.

Wicket /small gate restricting movement of animals through gate.

Children Friendly Park at Amritsar Town, (District ... - AWS

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Transcript of Children Friendly Park at Amritsar Town, (District ... - AWS