00412.01 345 Section 00412 - Cured -in-Place Pipe Lining Thermo Cure
Description
00412.00Scope - This Work consists of rehabilitating existing pipes by furnishing and installing pipe
liners by cured- in-place pipe (CIPP) lini ng methods as shown using a thermosetting resin cured with hot water or steam .
00412.01Submittals - Submit the following at least 10 Calendar Days before the preconstruction
conference. List each submittal in a table of contents including a corresponding page number.
• Certification by the lining system manufacturer that the installer is licensed and certified as competent to perform the Work . • Documentation showing the installer meets the qualifications listed in 00412.30, and a list of the key qualified personnel who are assigned to Work on this Project . • Independent third party certification of test results confirming the CIPP liner system meets the minimum chemical resistance requirements according to ASTM F1216 and ASTM F1743 when lining storm sewers, sanitary sewers, industrial applications or as directed. • Catalog data, and manufacturer's t echnical data showing complete information on material composition, physical properties, and dimensions of system components of the tube and resin system. Include manufacturer's recommendation for handling, storage, insertion, curing, trimming, finishing, and repair of damaged liner. • Calculations for the volume of resin to be used for each segment and detailed description of the wet-out process. Include the tube and resin manufacturer 's wet -out recommendations including the roller gap, material feed speed and vacuum requirements for each liner size and thickness. • End seal M aterial to be used, and method of installation. If a grout sealing method is proposed or suggested, provide certification from the grout manufacturer or Supplier that the grout M aterial for sealing Structures and service laterals is compatible with the proposed resin and liner system and is suitable for use in aqueous environments. • Fields ampling and testing plan for physical properties according to ASTM F1216 and ASTM F1743, including na me and location of laboratory performing testing on installed liner system. Provide certification that the independent third party laboratory has the appropriate accreditation for the specified tests to be performed. Installation plan describing projects taging, liner shot plan and sequence, and the manufacturer’s standard procedures for liner installation. Include allowable pulling forces, installation pressures, allowable curing temperatures, and temperature monitoring plan. Contingency repair plan including methods and Equipment to be used to repair or replace unacceptable liner defects identified in 00412.73. • Stamped design of the proposed liner according to 00150.35 and 00412.02.
Submit the following for approval according to 00150.37 at least 10 Calendar Days before ordering tube(s): Verify Pipe length, rise and span, for each installation according to Section 00415 and include the corresponding tube size that will be ordered for each installation according to 00412.10. Do not order Material(s) until approval has been received. Upon liner system delivery, submit wet -out logs documenting resin volumes used.
00412.02 346 00412.02 Design Parameters - Follow the design considerations of ASTM F1216 and meet the following:
Condition Parameter Service Life ...............................Greater than 50 year Pipe Conditions .........................Fully deteriorated Load Conditions: Soil .................................. 125 lb/cf minimum Traffic ............................ LRFD HL - 93 live load Groundwater Elevation above invert ...... * Pipe Ovality ......................................... 5% Modulus of Soil Reaction ................... 700psi Enhancement Factor ........................... 7.0 Long-T erm Flexural: Strength .............................50% of initial ( ASTM D790) Modulus of Elasticity ..........50% of initial ( ASTM D790) Maximum Deflection ............................ 5% Minimum Factor of Safety .................... 2.0
* Parameters will be listed in the Special Provisions.
Materials
00412.10Tube - Furnish tubing that consists of absorbent nonwoven felt fabric meeting the
requirements of ASTM F1216, Section 5.1 and exhibits the following characteristics:
• A smooth, impermeable, bonded coating on the inside of the finished pipe. • Sewn or bonded seams, stronger than non-seamed Material, as recommended by the tube manufacturer. • No allowable delamination in the cured CIPP.
Verify pipe lengths and pipe diameters before ordering tubing.
00412.11Resin - Furnish resins meeting the requirements of ASTM F1216, Section 5.2, or
ASTM F1743, Section 5.2.3. Comply with the structural requirements specified for the installed liner system. Furnish thermosetting polyester, vinylester, or epoxy resin and a catalyst system compatible with the installation process, and is able to cure in the presence or absence of water. Color the resin with a pigment compatible with the resin system.
00412.12Liner Properties - Furnish liners that have the minimum physical properties stated in
ASTM F1216, ASTM F1743 and ASTM D2990, and are also resistant to chemical properties and flow characteristics typically found in municipal sanitary sewer flows. Fabricate the liner to a size that when cured, will tightly fit the pipe being rehabilitated. The finished liner system shall be homogeneous across the wall thickness containing no intermediate or encapsulated elastomeric layers. Characteristic Test Method Epoxy/Vinylester Polyester Resin Initial Flexural Strength ASTM D790 5,000 psi 4,500 psi Initial Flexural Modulus of Elasticity ASTM D790 400,000 psi 250,000 psi (min.)
00412.44 347 Labor
00412.30Personnel Qualifications - Provide installers who:
• Are licensed, and certified by the manufacturer of the CIPP products ystem to be used on the Project. • Have at least 3 years of active experience in the installation of CIPP. • Have installed at least 50,000 feet of CIPP in similar conditions.
Construction
00412.40General - Handle and store all liner Material to ensure that the Material is not torn, cut,
exposed to direct sunlight or otherwise damaged. Before installing the liner, verify its condition with the Engineer. If any part of the liner Material becomes torn, cut, or damaged before or during insertion, repair or replace it at no additional cost to the Agency before proceeding further.
00412.41Pipe Cleaning - Clean the pipe by removing all debris, sediment, and other accumulated
material. Do not use chemicals wit hout the written approval of the Engineer. Remove and dispose of all debris according to 00290.20.
00412.42Pre -Installation:
according to Section 00415, at least 5 Calendar Days before beginning pipe lining Work.
obstructions, reduction in cross -sectional area, sags, previous repairs, or any structural defects in the pipe, submit a point repair plan to the Engineer for approval. All point repairs must restore the host pipe to a condition suitable for CIPP lining.
Approved unanticipated point repairs to restore the host pipe suitable for UV -CIPP linin g will b e paid for according to 00195.20.
00412.43Installation - Install CIPP according to ASTM F1216 Section 7, ASTM F1743 Section 6,
and the manufacturer's recommendations.
more continuous host pipe segments requiring lining.
Provide temporary downstream dams or filtration measures in the pipeline to catch excess resin and construction debris.
Do not allow the temperature of water discharged from processing liners to exceed the level allowed by State or local requirements.
Provide a "back -up" robotic cutter assembly train and key spare components on- site during CIPP lining activities.
00412.44Service Line Reconnection - Reinstate active service laterals using an internal cutter
Open hole to a minimum of 95 percent, but do not exceed 105 percent of the service lateral diameter. Make each connection free from burrs or projections, and with a smooth and crack -free edge.
00412.70 348 Finishing, Cleaning Up, and Testing
00412.70General - Ensure the cured liner is continuous and free from visual defects such as foreign
inclusions, dry spots, pinholes, delamination, and wrinkles at all locations. Verify the lining is impervious and free of any leakage from water infiltration into the lined pi pe or exfiltration from the lined pipe.
Cut both ends of the cured liner flush at the inlet and outlet points of the pipe, and seal with an epoxy or resin mixture compatible with the liner/resin system, providing a watertight seal.
Remove any temporary dams or filtration measures after Work is complete and pipe is clean and restored.
00412.71Post Installation Video Inspection - After installation of the CIPP perform a post -
installation video inspection of the pipe according to Section 00415.
00412.72Material Sampling and Testing - Obtain samples and perform material testing according
to ASTM F1216 and ASTM F1743. Perform one physical properties test per 1,000 feet installed, or as specified. Individually label and log each sample with the following information:
Project name Name of Contactor Sampler’s name Sample number Date and time of sample Location of sample Initial cure start date and time Name and location of third party laboratory Flexural properties must meet or exceed the values according to 00412.12.
00412.73Repairs - Before making repairs, provide the CIPP liner system manufacturer's
recommendations for liner repairs, subject to approval by the Engineer . Repair or replace CIPP liners that have:
• Wrinkles, fins or other dis continuities in the lower one-third of the pipe that are perpendicular to the flow and exceed 1/2 inches in height, or are greater than 3 percent of the host pipe inside diameter. • Wrinkles, fins or other discontinuities in the upper two-thirds of the pipe that are perpendicular to the flow and are greater in height than 5 percent of the host pipe inside diameter. • Blisters or dry spots present. • Leakage through the liner in excess of ASTM F1216 and ASTM F1743 standards. • Separation of the liner from the host pipe. • Delamination of CIPP layers.
00412.75Contractor Warranty - The Contractor unconditionally warrants to the Agency the product
and installation under this Section against failure, according to this Subsection and 00170.85(b)(1).
00412.80 349 "Unconditionally warrant" means that the warranty covers all failures, regardless of the source or cause of the failure, including, without limitation, whether the source or cause is or may be related to workmanship, inspection, or choice of M aterials. The Agency inspection of any portion of the Work during the Contract and during the product installation, the Agency acceptance of the Work , corrections under the warranty, or expiration of the warranty shall not relieve the obligations under this warranty.
Wrinkles, fins or other discontinuities in the lower one-third of the pipe that are perpendicular to the flow and exceed 1/2 inch in heigh t, or are greater than 3 percent of the host pipe inside diameter. Wrinkles, fins or other discontinuities in the upper two-thirds of the pipe that are perpendicular to the flow and are greater in height than 5 percent of the host pipe inside diameter. Blisters or dry spots. Leakage through the liner in excess of ASTM F1216 and ASTM F1743 standards. Separation of the liner from the host pipe. Delamination of CIPP layers.
remedy at no additional cost to the Agency:
Liner repair plan and written timeline of when the Work will be completed within 10 Calendar Days of the Agency’s written notification of failure. One of the following, as approved: • Install a seco nd liner, • Remove the failed liner and install a full -thickness liner, • Construct a full pipe replacement, or • Install a liner repair. Complete one of the approved remedy ’s within 6 0 Calendar Days of the Agency's written notification of failure. Use Materials and procedures meeting the Specifications. Coordinate timing of repair Work with the Engineer.
cause a hazard, the failure may be temporarily correc ted by Agency or other forces at no additional cost to the Agency. Replace temporary repairs with permanent repairs at no additional cost to the Agency and according to the Specifications and within the time specified in 00412.75(c).
Measurement
00412.80Measurement - The quantities of installed CIPP liners, of the various kinds, types, and
sizes, will be measured on the length basis. The length will be measured, with no deduction for Structures or fittings, along the pipe flow line from center to center of manholes, inlets, Structures, special sections, or the ends of pipe, whichever is applicable. The quantities of service line reconnections will be measured on the unit basis, regardless of size. 00412.90 350 Payment
00412.90Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement, for the following items:
Pay Item Unit of Measurement
In item (a), the n ominal size of the host pipe will be inserted in the blank.
Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment , labor, and Incidentals necessary to complete the Work as specified.