Attachment 1-Cured-in-Place Pipe Liner for Culverts and Storm Sewers-20RC401-A320-02.pdf

20RC401-A320-02

MICHIGAN

DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION

FOR

CURED-IN-PLACE PIPE LINER FOR CULVERTS AND STORM SEWERS

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a. Description. This work consists of the design and installation of the cured-in-place resin impregnated felt liner into an existing circular or non-circular culvert or storm sewer by hydrostatic inversion or by the direct pulled-in-place method at the locations specified on the plans. Cure the liner in place so that the finished installation is continuous, furnishes structural support, and is tight fitting to the existing pipe. The manufacturer of the liner system must furnish the design, installation, and inspection of the liner and must have an authorized representative on site during installation.

Furnish video inspection of the culverts and sewers before (after cleaning) and after lining. All culvert and sewer cleaning, maintaining flow, bypass pumping, and site preparation is included in this work except as described below.

b. Materials. Use tube and resin material in accordance with one of the following standards: ASTM F1216, ASTM F1743, ASTM F2019 and/or Design of Close-Fit Liners for the Rehabilitation of Gravity Pipes, MOP 145 (ASCE MOP 145), as applicable.

Design the liner for HS-20 live loading. For circular pipe, design the required cured-in-place liner wall thickness in accordance with Appendix X1 of ASTM F1216 or ASCE MOP 145. For non-circular pipe, design the cured-in-place liner in accordance with ASCE MOP 145. Use the formulas assuming a fully deteriorated pipe condition and assume the water table is at the top surface of the pavement over the existing pipe.

Furnish documentation and calculations to the Engineer prior to installation verifying the proposed design liner thickness for each run of pipe, all component materials, and that the liner meets the minimum chemical resistance requirements in accordance with Appendix X2 of ASTM F1216 and/or ASCE MOP 145, as applicable.

Furnish a tube consisting of one or more layers of flexible needled felt or equivalent woven or nonwoven material capable of carrying resin and withstanding installation pressures and curing temperatures. Ensure the tube is compatible with the resin system used. Ensure the tube material can stretch to fit irregular culvert or sewer sections. Ensure the outside layer of the tube is plastic-coated with a material that is compatible with the resin system used. Fabricate the tube to the required size to fit the inside diameter for the full length of the existing culvert or sewer when cured. Ensure allowance is made for circumferential stretch during the hydrostatic inversion method and for longitudinal stretch during the direct pulled-in-place method.

c. Construction. Furnish at least 10 work days notice to the Engineer prior to starting the work. Electronically submit all required documentation to the Engineer for approval prior to starting the work. Do not begin work until approval is received from the Engineer.

Video inspect the existing and lined pipe in accordance with subsection 402.03.J of the Standard Specifications for Construction. Thoroughly clean the existing pipe prior to video

COS:DMG 2 of 3 11-25-24 inspection. Dispose of all debris in accordance with subsection 205.03.P of the Standard Specifications for Construction.

Propose a corrective action to eliminate any obstruction revealed by the pre-installation inspection that cannot be removed by conventional pipe cleaning equipment and that prevents the cured-in-place liner from being installed properly. Ensure the proposed corrective action is approved by the Engineer prior to commencement of the work.

Maintain flow around the run of pipe designated for lining as necessary. Ensure the bypass pumping system can provide adequate capacity to handle the existing flow plus any additional flow that may occur during periods of precipitation. Electronically submit a bypass pumping plan containing all necessary details to the Engineer for approval at least 10 work days prior to conducting the work.

Continuously monitor all pumps and equipment. Follow local noise ordinances if pumping is required on a 24-hour basis.

Install the cured-in-place liner in accordance with the manufacturer’s guidelines and ASTM F1216, ASTM F1743, or ASTM F2019, as applicable. Ensure the finished liner is continuous over the entire length of pipe and is free from visual defects, such as foreign inclusions, dry spots, pinholes, lifts, and delamination. Wrinkles or other flaws in the cured liner that reduce the hydraulic capacity of the pipe are unacceptable. Correct any deficiency found at no cost to the contract, utilizing a method approved by the Engineer. Remove and dispose of excess resin and other materials generated from the installation.

For all types of resin and installation methods, capture and dispose of all process water and wastewater resulting from the installation and flushing of the cured-in-place liner. Ensure the captured water is disposed of at a local wastewater treatment facility or as otherwise approved by the Engineer in accordance with applicable federal, state, and local regulations and permit requirements. Furnish written authorization to the Engineer for acceptance of this water from the local wastewater treatment facility prior to starting the work. Furnish written confirmation to the Engineer from the disposal facility verifying the process water was disposed of properly.

Ensure process water is not discharged directly or indirectly to a ditch, storm sewer, surface water body, or other unapproved location.

Prepare and test samples for each lined run of pipe in accordance with ASTM F1216, section

8.1 or ASTM F2019, section 7.1 and/or ASCE MOP 145, as applicable.

Furnish a certification, sealed by a Professional Engineer licensed in the State of Michigan, verifying that the lining system has been designed, manufactured, and installed in accordance with the applicable ASTM standards and this special provision.

d. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay item:

Pay Item Pay Unit

Cured-In-Place Pipe Lining, __ inch ........................................................................... Foot

Cured-In-Place Pipe Lining, __ inch includes cleaning, debris disposal and video inspection necessary to line the culverts and storm sewers as described.

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The cost for the work to remove an obstruction that cannot be removed with conventional pipe cleaning equipment will be paid for separately in accordance with the contract.