CCFRPM PIPE 1

HOBAS PIPE LARGE DIAMETER:

AN ANALYSIS

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Free PE Exam Answer

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Centrifugally Cast Fiberglass Reinforced Polymer Mortar Pipe

(CCFRPM)

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PROCESS

Resin

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PROCESS

Resin Sand

Glass

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CCFRPM Wall Construction

1

2

3

4

5

Fiberglass 2.5% E/B

Body Resin 3% E/B

Barrier Resin 60% E/B

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What makes the difference in Bending?

Corrosive H2SO4

CCFRPM Very Flexible Barrier

Resin > 1,000% more elastic

than

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HOBAS Pipe Built for Sanitary Sewers

CCFRPM

1,000’s of times more life than FW in strain corrosion

1,000’s of times the life of FW in abrasion resistance

1,000% more gasket surface than FW

The right materials, the right design, the right track record, the right people…

THE RIGHT PIPE

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Large Diameter Plastic Pipe

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So, why doesn’t ADS test in strain-corrosion for sewer?

Storm Pipe OK, Sewer Pipe=H2SO4+LOAD=STRAIN

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Long Term Strength Comparison

Hobas PWPP

“Dual Cage” Reinforcement Non-Homogenous Thermoset Modulus 1,900,000 PSI

Unreinforced Homogenous Thermo Plastic Modulus 27,000 PSI

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Now Add Coupling Differences

FWC Gasket

REKA Gasket

84” Pipe Example

CCFRPM’s FWC

Coupling has 6,000 in2 of gasket

surface

FW’s REKA Coupling has 400

in2 of gasket surface

FWC’s 1,400% more gasket area

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Adhesive and Fiberglass, not a good mix!

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Hobas has a zero leakage gasket!!! No infiltration/Exfiltration!!!

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Cost of Infiltration

• Sewer Treatment Cost ~ $4/1000 Gallons • 2.5 MG Annual Cost of Treatment =

$10,000 • 50 year design life @ 3% inflation

– 30 year cost of treatment $375,000.00 – 50 year cost of treatment $1,160,530.00 – 100 year cost of treatment

$6,250,000.00 • Cost of settlement, cleaning, surface

damage, etc…?

23

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Allowable Leakage Rates/What does it cost??

Pipe Material Allowable Infiltration

Rate (gal/inch

dia/mile/day)

Annual Infiltration (million gallons)

Annual Cost of Infiltration

Treatment (dollars)

Hobas 0 0 $0.00

PWPP 200 2.5 $10,000.00

PWPVC 200 2.5 $10,000.00

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HYDRAULICS

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Smooth Walls and True I.D.

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Hobas Smooth Wall Manning’s n = 0.009 I.D. Larger than Nominal

PWPP Smooth Wall Manning’s n = 0.012 I.D. Smaller than Nominal

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PVC, HDPE MEASURED BY OD/DEFLECTION

I have attached a couple of documents as a quick reference material to help us all. Starting with the 30” and 36” Vylon Pipes where required to have a minimum 29.5” and 35.5”, respectively, the actual diameters could be as small as 28.61" and 34.43". This is clearly indicated in the Prime Conduits' own Vylon Pipe installation literature available online (Table 5). This results in a 6% Loss of Hydraulic Capacity. This is even before the allowable 5% deflection is allowed, where the loss goes up to 15% in that case. No owner would accept this. They just need to read the catalogs a bit closer to understand.

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Flow Capacity

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Hobas 48“ Actual I.D. = 48.7"

Manning’s = 0.009

PWPP 48“ Actual I.D. = 47.32" Manning’s = 0.012 Capacity Reduction

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SLIPLINE

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When SaniTite HP pipe is used as a liner, it is very important not to use excessive grout pressure. Including a factor of safety, the recommended maximum grouting pressure for HP pipe products is 5 psi.

Joints For flowable fill applications, the use of a watertight joint is recommended. With this type of joint, water can “bleed” through the joint during the fill material curing, facilitating the process. This will depend nearly entirely on the consistency of the mix design. The fine-grained materials in the fill material are not permitted to infiltrate the joint.

BRAND S Used as a Liner

In most circumstances, the joint, not the wall strength, will be the limiting factor for establishing a maximum allowable grouting pressure

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2006 HOBAS CCFRPM 54

PVC Melting Issues:

2008

An abandoned work site at East 20th Avenue and Windsor Street has frustrated local residents.

Neighbours waiting for sewer work to be completed at East 20th and Windsor can finally see light at the end of the tunnel. Crews are expected to return in two weeks to complete work by the end of June."If they finish by June 30 and they stick to that deadline, then I can work with that," said concerned resident Aideen Clery. "Being informed and knowing what is going on, I can deal with that. It's being left completely in the dark, I just can't put up with that."The sewer work, which began more than a year ago, came to a standstill six months ago. Residents like Clery were left with a lack of parking and mess left on their street with no explanation from the city as to the reason.Vaughn Figueira, a senior engineer, said the city has been negotiating with the Ontario-based Dibco Underground Ltd. to complete the work since June. The city contacted the bond company representing Dibco, but didn't collect any money.Figueira said stories circulating among residents about court cases related to the project and slowdown are not true.Dibco has agreed to return to complete the work by June 30 for the original agreed upon contract of $3.7 million. The city expects toreceive the company's work plan in two weeks, with actual work to resume immediately after.Last year, Dibco workers bored a tunnel and slipped in PVC pipe liner to separate storm water and waste sewage. But when they grouted to hold the pipes in place, more than half of the pipes melted, blocking the tunnel. Dibco plans to replace the damaged sections of PVC pipe with Hobas pipe made from a fibreglassresin. It's a type of pipe with which Dibco is more familiar.Figueira said PVC pipes have been installed in other tunnelling projects, and he's not sure what went wrong in this case.From June to October, neighbours along East 20th faced an ugly, rusty fence around a hole on their street, discarded pipes, cement boulders and blocked parking.After Clery spoke to the Courier in September, Dibco returned and moved all of the detritus from her side of the street to the opposite side. "I was feeling really bad. It was like my article had spurred something, but at the same time I was making life more miserable for neighbours," she said.Clery phoned the city, which sent staff to the scene. "It was like the O.K. Corral," she said. "The city [workers] were at one side of the street. Dibco were at the other side of the street and they were waving papers and on cellphones."Dibco workers left town at 3 p.m. that day, but a city crew stayed a week, improving the condition of the street.The project is part of an initiative to separate storm water and waste across Metro Vancouver by 2050. The city will save money by sending less sewage for treatment. Storm water can be directed for irrigation or to create water features in parks. The city hasn't decided where the storm water from the 20th Avenue sewer line will go.Separating storm water from waste will also reduce the amount of sewage overflows, which typically happen three or four times a year after a significant squall. The water of Coal Harbour will be a little cleaner once the separation at 20th Avenue is complete.© Vancouver Courier 2008

CREDIT: Photo-Dan Toulgoet

CCFRPM PIPE 36

BAKERSFIELD, CALIFORNIA

CHESTER AVE. TRUNK SEWER REHAB, PHASE I in 1997 where 4,000 LF of 33” Vylon was installed inside a 36” RCP . 140 joints out of 266 joints of pipe were broken during sliplining operation. That is a whopping 52% failure rate. Lamson Sessions Corporation paid for

the contractor to go inside the sewer and install MILLER COUPLINGS to seal the joints.

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CCFRPM PIPE 39 3

Value Long Term Strength

Flow Capacity

Zero Leakage

Best Value

Hobas

PWPP

PWPVC

Hobas’ goal isn’t to make the cheapest pipe in the market. Hobas is dedicated to making the best value pipe in the market.

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EBMUD SD326 85 and 96 Inch Relining-Oakland

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EBMUD SD326 85 and 96 Inch Relining-Oakland

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SUNNYDALE AUXILLARY SEWER-SAN FRANCISCO

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Lander Street Slipline:

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Los Angeles County 60”

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INCREASED FLOW CAPACITY!

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42” Live Load San Antonio

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Live Load Chicago

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SLIPLINE VS CIPP

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CIPP No Dig Facts

Large diameter rehab Is another story

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CIPP Footprint

• Inversion Tower • Conveyor • Roller Beds • Tube Pallets • Resin Tankers • Resin Mixers • Boiler Trucks • Crane • Supply Trailers • Etc.

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Sliplining’s Footprint

• Access Point – Just wider than the

host line diameter

• 15’-25’ long – Depending on length

of pipe

• Street plate covers possible

• No Bypass – Pumps, lines, ramps,

etc.

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Time Frame for Construction

• Cleaning – CIPP Clean – Every pebble

• Bypass Setup – Access for suction – Access for piping – Access for road

crossings – Access for

discharge

• Excavate Access Point (s)

• Cleaning – SL Clean

• Install Pipe – Rates exceeding

1,500 LF/Day

• Grout Pipe • Close Access

Sliplining CIPP

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Time frame Continued (2)

• Setup Inversion site (800’ runs Typical) – Excavate Manholes – Set frame work – Setup conveyor – Setup tent – Stage Tube, resin

tankers, boilers, mixers, etc.

• Finished Sliplining CIPP

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Time frame Continued (3)

• Wet out of liner • Liner Inversion • Cure mixed resin

wall insitu • Cool down cure

water • Manage Styrene

discharge • Cut ends

• ….

Sliplining CIPP

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Time frame Continued (4)

• Dismantle Bypass pumping system – Pumps, pipes, road

crossings • Close up Inversion sites • Close up Bypass Access

sites • Repeat as needed for

next inversion site

• ….. • Repeat as needed

for line lengths of up to 5,000 lf

Sliplining CIPP

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Construction Summary

• Sliplining – Very small footprint

– Long runs from

single access point

– Fast insertion pace – No bypass and

associated costs and risks

• CIPP – Larger staging area

needed – Long lengths not

typical – Time consuming

installation process – Must bypass until

new line can be placed back in service

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Structural Differences

• Resin Only Pipe Wall

• Non-reinforced wall with SN of 15 or less

• Manufactured onsite in wet sewage environment

• Test sample taken from flat plates in inversion tube

• Does entire line match sample?

• Are the top, sides and bottom of liner the required design thickness?

• Fiberglass Reinforced Pipe Wall

• Pipe Stiffness of 46 and higher

• Manufactured in a QC monitored, computer controlled facility

• Samples taken from actual pipe

• Thickness verified end to end

• Stiffness verified in factory

Sliplining CIP

Rehabilitation

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Controlled Manufacturing

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Solid Pipe Physical QC Inspection

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CIPP Field Manufacturing

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Structural Differences2

• Sliplining CCFRPM – Life span is in

MILLIONS of years

• Proven results from finished product

CIPP Design life is

50 years Estimated from

lab testing of samples

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Structural Summary

• Slipline – Controlled

Manufacturing – High QC inspection – High Pipe Stiffness – Life Span of millions

of years

• CIPP – Field “insitu”

manufacturing conditions

– Disconnected sampling

– Low Pipe Stiffness – 50 year design life

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CAPACITY

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Diameter/Slope/Surface friction

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Not all “rough” pipes are equally rough

• New and deteriorated concrete pipe shouldn’t use the same 0.015 to .019

coefficient.

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FORT HALL INDIAN IRRIGATION

• Mannings n…….

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Not all “smooth” pipes have a Manning’s “n” of 0.010

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Capacity: Internal Diameter/Friction

80%

Bare Concrete Manning’s “n”

0.015

115%

CCFRPM Manning’s “n”

0.010

129%

CIPP Manning’s “n”

0.010

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How much is the additional capacity worth?

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System Base Line

base 129% 115%

54” Concrete Slipline w/ CCFRPM

CIPP Rehabilitati

on

2,500’ 5,000 LF 54” Sewer @ 80% capacity 10% growth/year

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Rehabilitation Cost Options 54” @ 20’ depth x 5,000 LF

• CIPP – 54” x 36mm

• $475 + 12($55) • = $1,135/LF

– Bypass Pumping @ $80,000 (20 days)

– Clean & TV @ $40/LF – No point repairs – 29% cap. increase Total = $5,955,000.00

$1,190/LF

• Sliplining – 48” installed @ $400/lf

• 48” LPB Pipe = $150.00/LF – Cleaning @ $35/lf – Grouting @ $25/CF – 15% cap. increase Total = $2,400,000

$480/LF

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Cost Balance

15% increase Slipline $480/LF 29% increase CIPP $1,190/LF

Sliplining ~ $32/foot/% increase in capacity CIPP ~ $41/foot/% increase in capacity

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Bottom Line Life Cycle Cost CIPP = $17.5M CCFRPM = $13.5M

• A) Spend $4.0 Million more than SL – Postpone Interceptor 16 months

• Cost of gaining 16 months = $250,000.00/Month

• B) Save $4.0 Million – Increase Flow Capacity to 115% and – Construct Interceptor 16 months sooner

• C) Spend the $4.0 Million and slipline an additional 8,300 LF of sewer for the same money as CIPP (@$480/lf)

– 166% more rehab for the same money!

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Fort Hall Hydraulic Calculations

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Cost Summary

• Sliplining can boost your capacity 15% 20% 40% or more

• You can rehabilitate significantly more footage with the same dollars

• Sliplining can be the lowest life-cycle cost alternative

Balance your rehabilitation options

and get the most footage with your budget

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SUMMARY=ADVANTAGES OVER CIPP

No Risk of lower interior cure versus ends No risk of trash tearing the liner, and unknown repair Slipline with capacity increases No Risk of blow out, i.e. Hydrostatic Pressure for inversion to high

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SUMMARY=ADVANTAGES OVER CIPP

Slipline with Structural QC verified Pipe Slipline with life cycle in the millions of year Slipline with capacity increases No Risk of Thinning Longer Slipline Runs Slipline to save rehabilitation dollars

$$$$ NO BYPASS $$$$$

Q & A