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1/23/2012
1
Detailed Topics in Cured in Place Pipe
Rehab of Water Mains
Sean O’Dell, PE
Baxter & Woodman, Inc.
708.478.2090 Office Phone
Illinois Section AWWA | Webinar
January 24, 2012 | 1:30pm
Water Systems are Failing and
Budgets are Shrinking
1/23/2012
2
How do we fix more pipe with less funds?
1. Plan Ahead
2. Rethink our current methods
3. Look at other Infrastructure
• Roadway Rehab
• Sewer Rehab
Consideration Water Main Rehab
1. Reduction in Cost and Disruption
2. Good WM Rehab Projects
3. Things to Remember #1
Agenda - Part No. 1
Recap from August Webcast – Why CIPP
1/23/2012
3
1. Installation Process
• By-Passing, Services, Fittings, Connections, etc.
• Manufacturer Differences
2. Performance Based Specifications
3. Things to Remember #2
4. Question / Answer
Agenda - Part No. 2
Detailed Topics
1. Reduction in Cost and Disruption
2. Good WM Rehab Projects
3. Things to Remember #1
Agenda - Part No. 1
Recap from August Webcast – Why CIPP
1/23/2012
4
Open Cut Construction Disruption is
Greater than Trenchless
Trenchless WM Rehabilitation Will
Reduce Disruption
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Trenchless WM Rehabilitation Will
Reduce Disruption
Open Cut Trenchless
1,500 sq.yds. 250 sq.yds.
Existing 8-inch in parkway, ¼ mile
Trenchless WM Rehabilitation Can
Reduce Project Cost
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Total Project Cost is More Than
Engineering & Construction Cost
What is the Perfect WM Rehab Project?
1. Straight Runs
2. Minimal Nodes
3. Size is Adequate
3. WM in Parkway
4. Secure Location
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Things to Remember #1
1. Literature Review: Can do ≠ Will do
2. Level of Plan Detail:
a) More than Sewer Lining (atlas level)
b) Less than Open Cut Water Main (detailed P&P)
3. Plan for worst case
4. IEPA Permit Apps are required
5. Max runs of 500-800 feet
6. Lineal feet vs. Actual footage
7. Ask the Experts / Manufactures
1. Installation Process
• Manufacturer Differences
• By-Passing, Services, Fittings, Connections, etc.
2. Performance Based Specifications
3. Things to Remember #2
4. Question / Answer
Agenda - Part No. 2
Detailed Topics
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Manufacturers and Manuals
• IEPA has approved Suppliers/Products
– Sanexen – Aquapipe
– Insituform – Insitumain Blue
– Thermopipe
• Certifications and Manuals:
– NSF / ANSI 61 Certification
– ASTM F1216 and F1743• http://www.astm.org/Standards/F1216.htm
• http://www.astm.org/Standards/F1743.htm
– AWWA M28
CIPP Installation
1. Temporary By-Pass
2. Dig Access Pits
3. Pipe Cleaning
4. Plugging and Inspecting
5. Installation and Curing
6. Testing
7. Reinstate Services
8. Restore Water Main Service
Photos c/o Insituform
1/23/2012
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Temporary By-Pass
1. Notification
2. Fire Hydrant Connection
3. Pipe on Surface
4. Temp Drive Ramps
5. Home Spigot Connection
Temporary By-Pass
1. Disinfection
2. Security
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Access Pits
1. Traffic Control
2. ~ 6’ x 10’ x 12” below pipe
3. Minimize locations
• Valve, Fittings
• 500’ (Sanexen)
• 800’ (Insituform)
4. Trench Boxes
Pressure Pipe Cleaning
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Pressure Pipe Cleaning
1. Rust and Scale Deposits need to be removed
2. Cleaning (High-velocity water jetting machines)
• Mechanically powered equipment
• Cable attached devices
• Pipe pigs
• Rotary Chain-boring
3. Televising (CCTV)
• Plugging of Services
Plugging and Inspecting
1. Internal Pipe Inspection
• Plugging of Services
• Televising (CCTV)
2. Leaking water must be stopped
3. Inspection to Owner/Engineer
before lining installation.
4. 2-inch services??
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Liner Installation
1. Impregnate
2. Insertion (Pull / Invert)
3. Pressurize and Circulate
• Hot Water
4. Cure / Cool / Cut
References:– ASTM F1216 and F1743
– AWWA M28
– IDOT Permit
Liner Installation
Insertion Techniques:
PullAquapipe
InversionInsitumain
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Testing
1. Samples
• Short-Term Flexural (Bending)
• Tensile and Thickness Properties
• Failing Sample Ramifications
2. Pressure Testing
• ASTM and IEPA
• 150 psi for 2 hours
-or-
• 1.5 times working
pressure for 2 hours
Reinstate Services and CCTV
1. 1
2. 2
3. 3
4. 4
5. 5
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Reinstate Services and CCTV
1. 1
2. 2
3. 3
4. 4
5. 5
Insitumain Aquapipe
Blue iTAPTM Excess Resin Seal(see photos) (not shown)
Install New Services
1. Small excavation required
2. Stainless steel saddle with multiple O-Ring
and rubber grid map (5” or 8” wide)
3. Tapping Bits:
• Standard for Cast Iron
• Shell Cutter for Liner
1/23/2012
15
Pit Connections
Insitumain
Hymax
Coupling
Connection(see right)
Aquapipe
No Connection
Adhesion
Liner
Coupling
New Pipe
Restore Water Service
1. Disinfection
2. Flushing
3. Restore Permanent Services
4. Dismantle Temporary Services
5. Site Restoration and Cleaning
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16
Recap: Pressure CIPP Installation
1. Temporary By-Pass
2. Dig Access Pits
3. Pipe Cleaning
4. Plugging and Inspecting
5. Installation and Curing
6. Testing
7. Reinstate Services
8. Restore Water Main Service
Photos c/o Insituform
1. Installation Process
• Manufacturer Differences
• By-Passing, Services, Fittings, Connections, etc.
2. Performance Based Specifications
3. Things to Remember #2
4. Question / Answer
Agenda - Part No. 2
Detailed Topics
1/23/2012
17
Performance Based Specifications
1. Project Intent
2. Performance Requirements
3. QA/QC Controls
4. Testing Requirements
5. Performance Work Statement
6. Defect/Acceptability/Repair
Bottom Line: Give Expectations
Sample at www.nassco.org
Performance Work Statement
• Statement of product conformance
• Installation plan
• Plan for service connection management
• Description of materials to be furnished
• Odor Control Plan
• Contractor experience and lead personnel
• Design calculations as required
• Manufactures technology data
• Equipment and tools to be furnished
• Public notification program
• Product Submittals
• Safety Plan
• QA/QC Plan
1/23/2012
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Defect/Acceptance/Repair Matrix
1. Give Contractor Clear Direction
2. Wrinkles and Fins
3. Blistering
4. Liner Lifts
5. Bulges
6. Dry Spots
7. Pinholes / Holes / Cracks
8. Voids / Leakage
9. Service Issues
ProblemWhat is
acceptableRepair
Technical Specifications
1. Submittals
2. Materials
3. Testing
1/23/2012
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CIPP for Water Main: Specifications
1. Submittals
a) Recommended Installation Procedures
b) Pressure Pipe Lining Design Calcs and Certs
c) Min and Max Cure Temperatures and Pressures
d) Resin System Certification
e) Television Inspections (Pre and Post)
f) Post-Lining
1. Written Logs of Pressure and Temperature
2. Lab Results of Samples
3. Written Logs of Pressure and Leakage Testing
CIPP for Water Main: Specifications
3. Materials
a) CIPP Tube
b) Thermoset Epoxy Resin
Aquapipe Insitumain
1/23/2012
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CIPP for Water Main: Specifications
3. Materials
a) Design Parameters
1. Pipe Condition
2. Depth
3. Design Life: 50-100yrs
5. Groundwater
6. Ovality
7. Soil Modulus
8. Working Pressure
9. Pipe Slope and Bends
10. Laterals
D
Soil
H
Ground
Water
Case Study: Oak Park, Illinois
Ridgeland Avenue CIPP
Oak Park, IL – Ridgeland and I-290
• 350 feet of 12-inch CIPP
1/23/2012
21
Case Study: Oak Park, Illinois
Ridgeland Avenue CIPP
1. Installation Process
• Manufacturer Differences
• By-Passing, Services, Fittings, Connections, etc.
2. Performance Based Specifications
3. Things to Remember #2
4. Question / Answer
Agenda - Part No. 2
Detailed Topics
1/23/2012
22
Things to Remember #2
1. Low Bid-Performance Based Specs
• Best Quality, Competition and Prices
2. Errors will happen - be ready
• Create open cut response plan
3. Responsibilities and Contract Setup
• Who is the general? Who installs by-pass?
4. Observation is a must by certified inspector
5. Discuss schedule with installers
Things to Remember #2 (con)
1. IEPA approved – has been completed in Illinois
2. 20-40% less expensive than open cut
3. 500-800 foot spans
4. 12-inch max diameter (currently)
5. >2-inch services cannot be robotically reinstated
6. Liners can span tees and gate valves if you wish
to abandon them. (cannot span b-fly valves)
7. Open cut or Pipe Burst if need to upsize
8. Extends life by 50-100 years
1/23/2012
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Water Main Lining is a Sustainable
Alternative to Open Cut Replacement
Questions & AnswersThank you kindly for your attention
www.baxterwoodman.com
Sean O’Dell, PE
Baxter & Woodman, Inc.
708.478.2090 Office Phone
Special Thanks to
- Kevin Coburn of Insituform
-Luc Lupien of Sanexen
- NASSCO