709.01 Ductile Iron and Steel Water Pipe
709.01.1 Ductile Iron Pipe
Furnish ductile iron pipe in accordance with AWWA C 151 for the pipe class specified in the contract. Use mechanical or slip-on joints in accordance with AWWA C 111 (ANSI A 21.11). Construct the joints to provide electrical conductivity using bronze shims, or gaskets with metallic shims molded into the gasket.
709.01.2 Steel Water Pipe
Furnish steel pipe in accordance with AWWA C 200 Standard for Water Pipe, 6 inches (150 mm) and larger. Field weld joints and bends in accordance with AWWA C 206. Meet AWWA C 203 requirements for shop and field coatings.
709.02 Corrugated Steel Pipe and Pipe Arches
Furnish corrugated steel pipe that is lock seam helically corrugated pipe or continuously welded seam corrugated pipe. Furnish corrugated steel pipe and pipe arches and coupling bands in accordance with AASHTO M 36 (excluding projection bands under 9.1.3) and the following:
A.When pipe is cut and to be rejoined, matchmark cut pipe ends and rejoin the matching ends during installation.
B.When using corrugated locking bands, re-roll the pipe ends forming at least two annular corrugations. Unraveling of lock seams due to re-rolling pipe ends is a defect and the pipe will be rejected. Repair zinc or aluminized pipe coating damaged by re-rolling using a zinc rich paint. Apply the paint to provide a minimum 0.005 inch (0.13 mm) thickness. If flanges are provided on the pipe ends, the coupling may be made by interlocking the flanges with a preformed channel band or other band incorporating a locking channel in accordance with AASHTO M 36. These bands may be used only on pipes with diameters up to and including 36 inches (900 mm). The coupling bands or devices other than those specified in AASHTO M 36 require the Project Manager’s approval before use. Meet the following additional requirements for syphon and irrigation pipe installations:
1.Use lock seam helically corrugated pipe, or welded seam helically corrugated pipe.
2.Continuously weld lock seams from end to end of each lock seam helically corrugated pipe section for syphon installations. Perform the welding after re-rolling the ends.
3.For irrigation installations using lock seam helically corrugated pipe, weld the lock seams as specified above or fabricate by inserting a 3⁄16-inch (5 mm) diameter continuous rubber chord meeting pipe industry standards into the lock seam during fabrication, in accordance with AASHTO M 36; and
4.Construct watertight field joints. Make the connection using a 10½-inch (267 mm) wide “hugger” type band. Hugger bands must have O-ring gaskets. Lubricate and install gaskets and coupling bands following the manufacturer’s recommendations. 709 – METAL PIPE 2020 EDITION V5.1 709-2 The Project Manager may direct the fabricator to conduct a water-tightness test, witnessed by an Inspector, on the type or types of pipe and coupling devices to be furnished. Submit the test method for approval before testing. Alternate test methods may be required.
709.03 Steel Structural Plate Pipe and Pipe Arches
Use galvanized corrugated steel structural plates and fasteners for constructing pipe in accordance with AASHTO M 167. Bevel the end plates of structural steel pipe plate arches as specified in the contract. Meet AASHTO M 167 requirements for allowable tolerance in span and rise for pipe arches. Submit a supplier’s itemized statement of the plate sizes for each shipment for field inspection of the plates. Department inspection will include examining pipe for deficiencies in the lengths of sheets used and evidence of poor workmanship. Samples may be taken for chemical analysis and weight of spelter coating.
709.04 Bituminous Coated Corrugated Steel Pipe and Pipe Arches, and
STEEL STRUCTURAL PLATE PIPE AND PIPE ARCHES Meet AASHTO M 243 pipe coating requirements except as modified below: • Clean and dry the surface to be coated before applying the bituminous coating. Apply coating with the ambient air temperature at least 50 °F (10 °C) and rising. Coat the full circumference of the pipes outside and the bottom up to one third of the vertical height of the pipes inside circumference. Provide a coat thickness of at least 0.05 inch (1.3 mm).
709.05 Pre-Coated, Galvanized Steel Culverts and Underdrains
Meet AASHTO M 245, M 246, and Subsection 709.02 for irrigation and syphon pipe installations. Provide a minimum 0.010-inch (0.25 mm) coating for both inside and outside surfaces in accordance with AASHTO M 246, Section 7.
709.06 Corrugated Steel Pipe for Underdrains
Furnish pipe and coupling bands in accordance with AASHTO M 36. The class of underdrain in AASHTO M 36 is the Contractor’s option. Furnish semi-circular underdrain and coupling bands in accordance with AASHTO M 36 and the Detailed Drawings. Furnish nuts, caps, screws, and other parts galvanized in accordance with ASTM A153 or B695 (Class 50). Furnish screens and caps for semicircular underdrains in accordance with the Detailed Drawings. Furnish bituminous coated underdrains in accordance with AASHTO M 190. Nuts, bolts, and screens must not be coated.
709.07 Corrugated Aluminum Pipe and Pipe Arch Culverts
Furnish corrugated aluminum pipe and pipe arch culverts in accordance with AASHTO M 196, and the modifications to AASHTO M 36 specified in Subsection 709.02 .
709.08 Corrugated Aluminum Pipe for Underdrains
Furnish corrugated aluminum pipe for underdrains in accordance with AASHTO M 196.
709.09 Seamless Steel Pipe
Furnish seamless steel pipe in accordance with ASTM A53.
709.10 Copper Pipe
Furnish copper pipe and tube in accordance with ASTM B88, Type K. 2020 EDITION V5.1 METAL PIPE – 709 709-3
709.11 Reserved
709.12 Type Ii Aluminized Corrugated Steel Pipe
Furnish pipe and coupling bands fabricated from material in accordance with AASHTO M 274. Ensure the prefabricated pipe and coupling bands are in accordance with Subsection 709.02.
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Source: Standard Specifications for Road and Bridge Construction, 2020 (v5.1) Edition. Pages 565–568 of 611. View official source ↗