HOBAS PIPE LARGE DIAMETER: AN ANALYSIS

HOBAS PIPE LARGE DIAMETER:
AN ANALYSIS
CCFRPM PIPE
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Free PE Exam Answer
CCFRPM PIPE
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Centrifugally Cast Fiberglass
Reinforced Polymer Mortar Pipe
(CCFRPM)
CCFRPM PIPE
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PROCESS
Resin
CCFRPM PIPE
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PROCESS
Glass
Resin
Sand
CCFRPM PIPE
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CCFRPM Wall Construction
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2
3
Fiberglass
2.5% E/B
Body Resin
3% E/B
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5
CCFRPM PIPE
Barrier Resin
60% E/B 6
What makes the difference in Bending?
Corrosive H2SO4
CCFRPM PIPE
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
CCFRPM PIPE
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Large Diameter Plastic Pipe
CCFRPM PIPE
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Storm Pipe OK, Sewer Pipe=H2SO4+LOAD=STRAIN
So, why doesn’t ADS test in strain-corrosion for sewer?
CCFRPM PIPE
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Long Term Strength Comparison
PWPP
Hobas
“Dual Cage” Reinforcement
Non-Homogenous Thermoset
Modulus 1,900,000 PSI
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Unreinforced
Homogenous Thermo Plastic
Modulus 27,000 PSI
CCFRPM PIPE
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Now Add Coupling Differences
84” Pipe Example
CCFRPM’s FWC
Coupling has
6,000 in2 of gasket
surface
FWC Gasket
REKA Gasket
FW’s REKA
Coupling has 400
in2 of gasket
surface
CCFRPM PIPE
FWC’s 1,400% more gasket area
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Adhesive and Fiberglass, not a good mix!
CCFRPM PIPE
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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…?
CCFRPM PIPE
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Allowable Leakage Rates/What does it
cost??
Pipe Material
Allowable
Infiltration
Rate
Annual
Infiltration
(million gallons)
(gal/inch
dia/mile/day)
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
CCFRPM PIPE
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Smooth Walls and True I.D.
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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CCFRPM PIPE
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CCFRPM PIPE
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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.
CCFRPM PIPE
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CCFRPM PIPE
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Flow Capacity
Hobas 48“
Actual I.D. = 48.7"
PWPP 48“
Actual I.D. = 47.32"
Manning’s = 0.012
Capacity Reduction
Manning’s = 0.009
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SLIPLINE
CCFRPM PIPE
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BRAND S Used as a Liner
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.
In most circumstances, the joint, not the wall strength, will be the
limiting factor for establishing a maximum allowable grouting
pressure
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.
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2
0
0
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PVC Melting Issues:
CREDIT: Photo-Dan Toulgoet
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 to
receive 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 fibreglass
resin. 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
2006
HOBAS
CCFRPM
CCFRPM
PIPE
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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.
CCFRPM PIPE
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CCFRPM PIPE
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CCFRPM PIPE
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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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CCFRPM PIPE
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EBMUD SD326 85 and 96 Inch Relining-Oakland
CCFRPM PIPE
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EBMUD SD326 85 and 96 Inch Relining-Oakland
CCFRPM PIPE
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SUNNYDALE AUXILLARY SEWER-SAN FRANCISCO
CCFRPM PIPE
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Lander Street Slipline:
CCFRPM PIPE
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Los Angeles County 60”
CCFRPM PIPE
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INCREASED FLOW CAPACITY!
CCFRPM PIPE
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42” Live Load San Antonio
CCFRPM PIPE
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Live Load Chicago
CCFRPM PIPE
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SLIPLINE VS CIPP
CCFRPM PIPE
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CIPP No Dig Facts
CCFRPM PIPE
Large diameter rehab
Is another story
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CIPP Footprint
•
•
•
•
•
•
•
•
•
•
CCFRPM PIPE
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.
CCFRPM PIPE
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Time Frame for Construction
Sliplining
• Excavate Access
Point (s)
• Cleaning
– SL Clean
CIPP
• Cleaning
– CIPP Clean
– Every pebble
• Bypass Setup
– Access for suction
– Access for piping
– Access for road
crossings
– Access for
discharge
• Install Pipe
– Rates exceeding
1,500 LF/Day
• Grout Pipe
• Close Access
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Time frame Continued (2)
Sliplining
• Finished
CIPP
• Setup Inversion site
(800’ runs Typical)
–
–
–
–
–
Excavate Manholes
Set frame work
Setup conveyor
Setup tent
Stage Tube, resin
tankers, boilers, mixers,
etc.
CCFRPM PIPE
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Time frame Continued (3)
Sliplining
• ….
CIPP
• Wet out of liner
• Liner Inversion
• Cure mixed resin
wall insitu
• Cool down cure
water
• Manage Styrene
discharge
• Cut ends
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Time frame Continued (4)
Sliplining
CIPP
• …..
• Repeat as needed
for line lengths of
up to 5,000 lf
• Dismantle Bypass
pumping system
– Pumps, pipes, road
crossings
• Close up Inversion sites
• Close up Bypass Access
sites
• Repeat as needed for
next inversion site
CCFRPM PIPE
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Construction Summary
• Sliplining
• CIPP
– Very small footprint
– Long runs from
single access point
– Fast insertion pace
– No bypass and
associated costs and
risks
CCFRPM PIPE
– 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
CIP
Rehabilitation
Sliplining
• 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
CCFRPM PIPE
• 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
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thickness?
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

CCFRPM PIPE
Estimated from
lab testing of
samples
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Structural Summary
• Slipline
• CIPP
– Controlled
Manufacturing
– High QC inspection
– High Pipe Stiffness
– Life Span of millions
of years
– 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.
CCFRPM PIPE
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FORT HALL INDIAN IRRIGATION
• Mannings n…….
CCFRPM PIPE
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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%
115%
129%
Bare Concrete
Manning’s “n”
0.015
CCFRPM
Manning’s “n”
0.010
CIPP
Manning’s “n”
0.010
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How much is the additional
capacity worth?
CCFRPM PIPE
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System Base Line
2,500’
5,000 LF 54” Sewer
@ 80% capacity
10% growth/year
base
115%
54” Concrete
Slipline w/
CCFRPM
CCFRPM PIPE
129%
CIPP
Rehabilitati
on
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Rehabilitation Cost Options
54” @ 20’ depth x 5,000 LF
• CIPP
–
• Sliplining
– 48” installed @ $400/lf
54” x 36mm
• 48” LPB Pipe = $150.00/LF
• $475 + 12($55)
• = $1,135/LF
– Cleaning @ $35/lf
– Grouting @ $25/CF
– 15% cap. increase
– Bypass Pumping @
$80,000 (20 days)
– Clean & TV @ $40/LF
– No point repairs
– 29% cap. increase
Total = $5,955,000.00
Total = $2,400,000
$1,190/LF
$480/LF
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Cost Balance
15% increase
$480/LF
29% increase
$1,190/LF
Sliplining ~
CIPP ~
Slipline
CIPP
$32/foot/% increase in capacity
$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
$$$$ NO BYPASS $$$$$
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Q&A