431-1 Description.
Rehabilitate drainage pipe by installing a pipe liner in accordance with the requirements of this Section. The Plans will indicate the location of the pipe to be rehabilitated, the material composition and the alternate liner types that may be used to reha bilitate the pipe, and the method of liner installation.
431-2 Materials.
Meet the requirements of Section 948.
431-3 Pre-installation Requirements.
Prior to installing the pipe liner, inspect the host pipe and ensure that it is clean, dry and stable. Inspect the host pipe by means of closed circuit television. The closed circuit television inspection may be augmented by a visual inspection in which persons enter a host pipe to inspect it, at no additional cost to the Department. Obtain written approval f rom the Engineer prior to allowing persons to enter a host pipe. Furnish all equipment necessary to inspect, remove silt and other debris, and dewater the host pipe to the satisfaction of the Engineer. Seal cracks and joints using an approved chemical grou t of either acrylamide base gel, acrylic base gel, urethane base gel, or urethane base foam. Place flowable fill as directed by the Engineer to maintain the stability of the host pipe.
431-4 Installation Methods.
431-4.1 General: Install the liner using o ne of, or a combination of, the following
methods: sliplining, inverting, pulling/pushing, spiral winding, paneling, coating, or bursting. Seal or grout the annular space between the interior of the host pipe and the exterior of the liner according to the liner manufacturer’s written instructions.
431-4.2 Sliplining: Use either polyethylene, high density polyethylene, polyvinyl
chloride, fiberglass, steel or aluminum pipe liner. Install the liner by joining discrete lengths, panels or segments of the pipe liner in a manhole or other access point and inserting the liner into the host pipe.
431-4.2 1 Polyethylene: Install polyethylene pipe liner in accordance with
ASTM F585. The manufacturer’s written instructions may be substituted for ASTM F585 with written permission from the Engineer.
431-4.2 2 High Density Polyethylene: Install high density polyethylene pipe
liner in accordance with ASTM F585. The manufacturer’s written instructions may be substituted for ASTM F585 with written permission from the Eng ineer.
431-4.2 3 Polyvinyl Chloride: Install polyvinyl chloride pipe liner in accordance
with ASTM F1698.
431-4.2 4 Fiberglass, Steel or Aluminum: Install fiberglass, steel or aluminum
pipe liner in accordance with the manufacturer’s written instructio ns.
431-4.2 5 Steel Reinforced Polyethylene Ribbed Pipe: Install reinforced pipe
liner in accordance with ASTM F585. The manufacturer’s written instructions may be substituted for ASTM F585 with written permission from the Engineer.
431-4.3 Inverting: Install a resin impregnated felt tube pipe liner into the host pipe, and
cure in place, in accordance with ASTM F1216. FY 2023-24 Return to Table of Contents
431-4.4 Pulling/Pushing: Install the liner in accordance with the manufacturer’s written
instructions. Protect the pipe liner end using a device that uniformly distributes the applied load around the perimeter of the liner. Continuously monitor the applied load, and do not stretch the liner by more than 1% of its original length. For liner lengths of 100 feet or less, the end protection dev ice may be omitted, with written permission from the Engineer. Do not seal the liner ends or begin grouting prior to 24 hours after liner installation.
431-4.5 Spiral Winding: Install the pipe liner in accordance with ASTM F1698 or
ASTM F1741.
431-4.6 Paneling: Install the pipe liner in accordance with the manufacturer’s written
instructions. Limit paneling to host pipes having 90 inch or greater internal diameters. Do not place panels where a liner joint will lie along or near the crown of the host pipe.
431-4.7 Coating: Use materials and install the pipe liner in accordance with the
manufacturer’s written instructions.
431-4.8 Bursting: Install the pipe liner in accordance with the manufacturer’s written
instructions. Limit bursting to vitrified clay o r concrete crossdrain or sidedrain pipe having no lateral connections or risers. Further limit bursting to locations where no part of the host pipe passes within 5 feet of any buried utility or pavement base material.
431-5 Acceptance.
Inspect the complet e rehabilitation by means of closed circuit television. Obtain written approval from the Engineer prior to allowing persons to enter a host pipe. Provide the Engineer videos of all preliminary and final inspections.
431-6 Method of Measurement.
The quanti ty of pipe liner to be paid for will be the length, per foot, of pipe liner installed and accepted, measured along the centerline of the pipe, from end to end.
431-7 Basis of Payment.
Price and payment for pipe liner will be full compensation for furnishi ng and installing the pipe liner in accordance with the requirements of this Section, including all materials, labor and incidentals required to dewater and clean host pipe, dispose of all silt and debris, seal cracks and joints in the host pipe, and seal and grout the annular space between the liner and interior of the host pipe. Price and payment for pipe liner will also be full compensation for all equipment, materials and labor required for inspections, and for furnishing videos of the inspections to the Engineer. Payment will be made under: Item No. 431 - 1- Pipe Liner - per foot. FY 2023-24 Return to Table of Contents SECTION 435 STRUCTURAL PLATE PIPE AND PIPE ARCH CULVERTS
435-1 Description.
Construct structural plate pipe and pipe arch culverts as shown in the Plans . Obtain pipe culverts from a plant currently on the Department’s Production Facility Listing. Producers seeking inclusion on the list shall meet the requirements of Section 105. At the beginning of each project, submit a notarized certification statement to the Engineer from a company designated representative certifying that the structural stee l plant will manufacture the products in accordance with the requirements set forth in the Contract Documents and plant’s approved Quality Control (QC) Plan. The QC Manager’s stamp on each product indicates certification that the product was fabricated in conformance with the Contractor’s QC Plan, the Contract, and this Section. Ensure that each shipment of structural plate products to the project site is accompanied with a QC signed or stamped delivery ticket providing the descri ption and the list of the p roducts. When the producer’s Quality Control Program is suspended by the Department, accept responsibility of either obtaining products from a plant with an approved Quality Control Program, or await re -approval of the plant. The Engineer will not allo w changes in Contract Time or completion dates as a result of the plant’s loss of qualification. Accept responsibility for all delay costs or other costs associated with the loss of the plant’s qualification .
435-2 Materials.
Meet the following requiremen ts: Steel Pipe ................................ ................................ ...............Section 944 Aluminum Pipe ................................ ................................ ......Section 945 Liner Repair Systems ................................ ............................. Section 948 When the Plans call for bituminous coated pipe or pipe arch, meet the coating requirements of 944 -4. When other types of coating material are shown in the Plans, use a coating that consists of at least two coats of the specified material, applied at the job site. Apply the coating by brush or by spray.
435-3 Trench, Foundation, Laying, and Backfill.
Perform this work as specified in Section 430, and as follows. Provide a foundation for the bottom plates that is of uniform density and carefully shaped to fit the lower plate of the pipe or pipe arch. Thoroughly tamp the backfill material against the remaining plates.
435-4 Assembly.
Assemble the plates to form the pipe or pipe arch structure in accordance with the diagram furnished by the manufacturer. Connect the plates by bolting tightly in all bolt holes provided.
435-5 Method of Measurement.
The quant ities to be paid for will be the plan quantity, in feet, of pipe or pipe arch, installed in place, completed and accepted. The quantity will be measured along the centerline of FY 2023-24 Return to Table of Contents