State of Technology Report for Force Main Rehabilitation, Final ...

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Technology/Method Fold -and - Form/Thermoformed Design Life Range 100 year claimed [4],[5], but not field-demonstrated; long-term material data testing and creep strain analysis offered as evidence of claim. Installation Standards ASTM F1867 ASTM F1947 Installation The Ultraliner PVC Alloy pipeliner is pulled into the cleaned host pipe, usually Methodology through a manhole. Access is required at both ends. Once in place, the ends are plugged and the pipeliner expanded with steam and air pressure (thermoformed) to reset the PVC Alloy’s “memory” to the new size and shape. Installation and processing of the liner takes 4 to 5 hours, excluding the time to reinstate laterals and some street operations set-up and tear down time. QA/QC Design material properties are quality assured at the manufacturing facility per ASTM product standards (F1871 or F1504) using industry standard QA/QC protocols common to the manufacture of all PVC pipes. Specification compliance is confirmed prior to installation. Standard industry post-construction QA/QC tests are available for further verification. IV. Operation and Maintenance Requirements O&M Needs No special maintenance training is required. Any cleaning or de-rooting procedure routinely practiced by maintenance personnel within PVC pipes is safe for use within PVC Alloy pipeliners. The host pipe can easily be removed (hammer a rigid host pipe to shatter it) without damaging the pipeliner, if new connections or repairs need to be made in the future. Standard fittings, couplings, and saddles are readily adaptable for use with PVC Alloy Pipeliners. Repair Requirements PVC Alloy pipeliners are capable of structurally lining and conforming to for Rehabilitated crushed sections of pipe and severe off-sets. Repair decisions are therefore Sections generally driven by system performance and long-term O&M requirements rather than constructability limitations. V. Costs Key Cost Factors PVC Alloy Pipeliners have relatively low set-up, mobilization, and shipping & handling costs. Materials are shelf-stable (do not have to be temperature controlled) and can be affordably shipped one reel at a time or in bulk (thereby enabling payment for stored materials where appropriate). • Extensive cleaning of the host pipe, above and beyond what is considered a routine pipe maintenance cleaning project, is required for all tight-fitting liners. • On gravity pipes, no excavation is required, providing significant savings. Access can be achieved through a manhole ring on one end and at least a clean-out on the other end. Laterals are robotically reinstated internally. • Pressure pipes frequently require excavation at the ends (and in the middle where maximum lengths have been exceeded), at valves and hydrants, and at connections. This can significantly impact cost-competitiveness against alternative technologies that can avoid excavation. • De-watering is not required for quality assurance, as water exposure cannot alter design property compliance of a solid wall PVC Alloy Pipeliner, but it may be utilized for risk control, as appropriate, since excessive groundwater can narrow the window of installability. • The material cost is all inclusive (and includes manufacturing QA/QC) with no additional on-site mixing of chemicals, nor “finishing” labor requirements prior to installation. • End seals, when specified, are routinely included in the unit price for the pipeliner. • Lateral reinstatements are generally a separate cost because the numbers of connections vary. • PVC Alloy pipeliners tend to be more competitive on small scale (short lengths, small diameter) projects given low mobilization and set up costs compared to other trenchless rehab methodologies. Case Study Costs GDOT- seven deteriorated culverts, ranging in diameter from 15 inches to 30 inches and 40 to 80 feet in length were lined for a total cost of $43,288. This was 34% less than the bid price of $65,674 to dig-and-replace. Generally speaking, A-24
Technology/Method Fold -and - Form/Thermoformed large scale (25,000 feet +) 8 inches PVC Alloy pipeliner projects can receive bids in the $22 per feet range, whereas smaller scale 8 inches projects with significant mobilization requirements or especially challenging conditions can receive prices up into the approximately $40 per feet range. VI. Data Sources References Ultraliner PVC Alloy Pipeliner brochure Private correspondence with Grant Whittle, VP of Ultraliner. [1] Whittle L. G. (2008). Takes Off at Naval Air Station in Jacksonville, Fla. Trenchless Technology Magazine, November, 2008. [2] Whittle L. G. and W. Zhao (2009). The Need for and Benefits of a Minimum Wall Thickness Requirement for Pipeliners. No Dig International 2009, Toronto, Canada, March 29 – April 3. Paper Accepted. [3] Zhao W. and L. G. Whittle (2009). An Asset Management Definition of Pipe Rehabilitation Success or Failure. ASCE Pipeline International 2009, San Diego, CA, Aug 16-19. Abstract Accepted. [4] Zhao W. and L. G. Whittle (2008). Long-term Performance life Prediction Using Critical Buckling Strain. NASTT No-dig 2008, Dallas, TX, April 27-May 2. [5] Zhao W. and L. G. Whittle (2008). Plastic Pipeliner Long-term Design: How to Accommodate Creep? ASCE Pipeline International 2008, Atlanta, GA, July 22-27. A-25
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EPA/600/R-10/044| March 2010 | www.
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DISCLAIMER The work reported in thi
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Introduction EXECUTIVE SUMMARY Forc
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The use of close-fit liners is ofte
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A whole host of ASTM specifications
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CONTENTS DISCLAIMER ...............
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6.0: OPERATION AND MAINTENANCE.....
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DEFINITIONS Cured-in-place pipe (CI
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3-D three-dimensional AASHTO ACP AR
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UV ultraviolet WERF Water Environme
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wastewater conveyance systems (EPA,
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• Section 8: Findings and Recomme
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Figure 2-2. Diameter Distribution o
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Figure 2-4. Location of Force Mains
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Proper inspection of force mains wo
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0.03% of the overall length. There
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Table 3-1. Summary of Renewal Techn
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3.3.3 Joint Repair 3.3.3.1 Internal
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more appropriate to a water main wh
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are, however, several communities (
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Table 3-3. Properties of Hunting Po
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3.4.3.1 Symmetrical Reduction Close
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Rolldown Rolldown was developed in
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Subline Subline, offered by Subterr
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On-Site Expandable PVC Close-Fit Li
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3.4.4.2 Semi-Structural CIPP Liners
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inch (150 mm) liner down to 60 psi
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3.4.5.1 Adhesive-Backed Woven Hose
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US. Primus Line is a seamless, wove
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Figure 3-21. Summary of Replacement
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favorable to stringing out a long l
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3.5.1.3 Pipe Slitting. Pipe slittin
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4.1 4.0 TECHNOLOGY SELECTION CONSID
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head loss to maintain flow capacity
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ferrous main, this can be an intern
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5.0 DESIGN AND QA/QC This section w
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thickness? It can still support the
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pipe’s design life. Once again, i
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ASTM F1533 The renewal process invo
Page 79 and 80: AWWA M55 PE Pipe - Design and Insta
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Page 89 and 90: 5.6.2.3 CIPP Long-Term QA/QC Requir
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Page 95 and 96: could also be used in force mains.
Page 97 and 98: 7.0 GAPS BETWEEN NEEDS AND AVAILABL
Page 99 and 100: 80 Table 7-1. Technology Gaps and C
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Page 105 and 106: 9.0 REFERENCES Aggarwal, S.C. and M
Page 107 and 108: Technology/Method Spray - On Lining
Page 109 and 110: Technology/Method Spray - On Lining
Page 111 and 112: Technology/Method Spray - on Lining
Page 113 and 114: Technology/Method Close Fit/Tension
Page 115 and 116: Technology/Method Close Fit PE/Symm
Page 117 and 118: Technology/Method Symmetrical Reduc
Page 119 and 120: Technology/Method Rolldown/Close Fi
Page 121 and 122: Technology/Method Subcoil/Close Fit
Page 123 and 124: Technology/Method PE Liner/ Cement
Page 125 and 126: Technology/Method Subline/Close Fit
Page 127 and 128: Technology/Method Fold and Form PE
Page 129: Technology/Method Fold -and - Form/
Page 133 and 134: Technology/Method Fold -and - Form
Page 135 and 136: Technology/Method Fold -and - Form
Page 137 and 138: Technology/Method Close - Fit Linin
Page 139 and 140: Technology/Method CIPP/Pull In Plac
Page 141 and 142: Technology/Method CIPP/Inversion wi
Page 143 and 144: Technology/Method CIPP/Direct Inver
Page 145 and 146: Technology/Method CIPP/ Inversion a
Page 151 and 152: Technology/Method CIPP/Glass Fiber
Page 153 and 154: Technology/Method CIPP/Pull in Plac
Page 155 and 156: Technology/Method CIPP/UV Light Cur
Page 157 and 158: Technology/Method CIPP/Glass Reinfo
Page 159 and 160: Technology/Method CIPP with Carbon
Page 165 and 166: for Rehabilitated Sections V. Costs
Page 167 and 168: Technology/Method Woven Hose Lining
Page 169 and 170: Technology/Method Saertex - Liner®
Page 171 and 172: Technology/Method Hose Liner/Pulled
Page 173 and 174: Technology/Method Glass Reinforced
Page 175: Technology/Method Sliplining/HDD/Pi
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State of Technology Report for Force Main Rehabilitation, Final ...

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