Detailed Topics in Cured in Place Pipe Rehab of Water · PDF file1/23/2012 1 Detailed Topics...

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Detailed Topics in Cured in Place Pipe

Rehab of Water Mains

Sean O’Dell, PE

Baxter & Woodman, Inc.

sodell@baxterwoodman.com

708.478.2090 Office Phone

Illinois Section AWWA | Webinar

January 24, 2012 | 1:30pm

Water Systems are Failing and

Budgets are Shrinking

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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

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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

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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

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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

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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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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

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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

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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

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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

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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

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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

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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

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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.

sodell@baxterwoodman.com

708.478.2090 Office Phone

Special Thanks to

- Kevin Coburn of Insituform

-Luc Lupien of Sanexen

- NASSCO