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 the structure from end to end of metal for full section structures, from averag e end to end at top and bottom for beveled -end structures.
435-6 Basis of Payment.
Prices and payments will be full compensation for all work specified in this Section, including all materials, backfilling, and disposal of surplus material and all excavat ion except the volume included in the items for grading work and for other items specified for payment in Section 125. Payment will be made under: Item No. 435 - Structural Plate Pipe Culvert - per foot. FY 2023-24 Return to Table of Contents SECTION 436 TRENCH DRAIN
436-1 Description.
Construct trench drain, with one of the materials listed below, for the purpose of collecting and removing surface run -off from paved areas. Furnish and install trench drain in accordance with the Standard Plans , at the locations shown in the Plans or as directed by the Engineer.
436-2 Materials.
Provide preformed channels or pipe with sufficient strength to withstand construction handling and placement of concrete backfill without deforming or deviating from line and grade. Submit certification to the Engineer from the man ufacturer that the trench drain system meets the requirements of this Section.
436-2.1 Channels/Pipe: Meet the following requirements:
Steel Pipe ................................ ............................ Section 943 Aluminum Pipe ................................ ................... Section 945 Polyethylene ......................... Section 948 and ASTM D3350 Polymer Concrete ................................ ............ASTM D6783 Fiberglass ................................ ........................ ASTM D3517
436-2.2 Concrete Backfill: Use concrete that meets the requirements of Section 347.
436-2.3 Grates: Provide steel grates and supporting frames that meet the requirements of
Section 962. Ductile iron frames and grates must meet the requirements of ASTM A536. Ensure that ductile iron grates and frames are compatible and from the same manufacturer. Frames must be anchored into the concrete backfill with studs bolts or lugs. Grates must have at least 30% open area and fasten securely to frames to avoid rattling, Grates must be removable for the entire channel length and have vandal resistant locking devices. Ensure that frames have a minimum of 4 inch long studs, bolts or lugs at all four corners.
436-2.4 Clean -Out covers for Type 1 Dra ins: Install steel or ductile iron covers that
meet the requirements of Section 962.
436-2.5 Outlet Pipe: Connect outlet pipe to the trench drain with standard manufactured
connectors. Unless a particular type is called for in the Plans, use any of the following types of pipe: Concrete ................................ .............................. Section 449 Steel................................ ................................ .....Section 943 Aluminum ................................ ........................... Section 945 Polyvinyl Chloride ................................ .................... 948-1.7 Polyethylene ................................ ............................... 948.2.3
436-3 Installation.
Submit to the Engineer the proposed method of installation, noting any deviation from the manufacturer’s recommendations. Place concrete backfill in the trench against undisturbed material at the sides and bott om of the trench in a manner that will prevent floating or shifting of the trench drain, and will prevent voids in, or segregation of the concrete. Tamp and spade to prevent honeycombing. Form the top surface to the lines shown in the Plans. Remove any foreign material that falls into the trench prior to or during placement of concrete. FY 2023-24 Return to Table of Contents