FHWA FP-24Public Domain

Section 707 — Metal Pipe

Division 700 — Material|PDF pages 823–826

707.01Ductile Iron Culvert Pipe. Conform to ASTM A716 for the sizes specified.

707.02Metallic -Coated Corrugated Steel Pipe. Provide pipe, special sections (such as elbows, branch connections, and prefabricated flared end secti ons) and coupling bands conforming to AASHTO M 36 and either AASHTO M 218, AASHTO M 274, or AASHTO M 289 for the dimensions, classification type, and thicknesses specified. Fabricate underdrain pipe from steel sheets with a minimum thickness of 0.052 inch. Use any class of perforation specified in AASHTO M 36.

707.03Aluminum -Alloy Corrugated Pipe. Provide pipe, special sections (such as elbows, branch connections, and prefabricated flared end sections) and coupling bands conforming to AASHTO M 196 for the dimensions, classification type, and thicknesses specified. Fabricate underdrain pipe from aluminum sheets with a minimum thickness of 0.048 inch. Use any class of perforation.

707.04Asphalt -Coated Pipe. Provide pipe, special sections (such as elbows, branch connections, and prefabricated flared end sections), and coupling bands conforming to this Section as applicable for the kinds of pipes to be coated. Coat the pipe with asphalt material conforming to AASHTO M 190 for the type of coating specified. Coat special sections (such as elbows, branch connections, and end sections) and coupling bands according to AASHTO M 190. Coat flared end sections with an asphalt coating conforming to AASHTO M 190, Type A or a field applied asphalt mastic coating conforming to AASHTO M 243.

707.05Steel Structural Plate Structures. Provide structures and assembly fasteners for connecting plates conforming to AASHTO M 167 for the sizes and types specified. 707.06 Aluminum -Alloy Structural Plate Structures. Provide struc tures and assembly fasteners for connecting plates conforming to AASHTO M 219 for the sizes and types specified. 707.07 Asphalt -Coated Structural Plate Structures. Provide structures conforming to either Subsection 707.05 or 707.06 as applicable. Coat with an asphalt coating conforming to AASHTO M 190, Type A or a field applied asphalt mastic coating conforming to AASHTO M 243. If the asphalt coating is applied to the plates before field erection, identify each plate’s nominal metal thickness by painting the data on the inside surface of the plates after coating. Other methods of plate identification may be used if approved.

707.08Polymer -Coated Steel Pipe. Provide pipe, special sections (such as elbows and branch connections) and coupling bands conforming to AASHTO M 245, Grade 250/250 and AASHTO M 246, Grade 250/250, for the dimensions, classification type, and class, if applicable, specified. 806 707.09 Corrugated Metal Units. Conform to AASHTO M 36 for steel corrugated units. Conform to AASHTO M 196 for aluminum corrugated units. See the plans for the diameter, shape, specific pipe classification and, if applicable, class. For coatings, conform to the following:

(a)Bituminous -coated corrugated units AASHTO M 190, Type A

(b)Polymer-precoated corrugated units AASHTO M 245, Grade 250/250

707.10Metallic -Coated Slotted Drain Pipe. Provide pipe conforming to AASHTO M 36 and either AASHTO M 218, AASHTO M 274, or AASHTO M 289 for the dimens ions, thicknesses, classification type, class, if applicable, and coating type specified. Fabricate the pipe with either angle slots or grate slots and as shown in the plans. Provide grate assemblies for the grate slot drain conforming to ASTM A1011, SS Grade 36. Galvanize slot angles and grate slot assemblies according to AASHTO M 111.

707.11Metallic -Coated Spiral Rib Pipe. Provide pipe, special sections (such as elbows and branch connections), and coupling bands conforming to AASHTO M 36, Type IR and Type IIR, AASHTO M 218, AASHTO M 274, or AASHTO M 289 for the dimensions, thicknesses, and coating type specified.

707.12Aluminum -Alloy Spiral Rib Pipe. Provide pipe, special sections (such as elbows and branch connections) and coupling bands conforming to AASHTO M 196, Type IR and Type IIR for the dimensions and thicknesses specified.

707.13Concrete -Lined Corrugated Steel Pipe. Provide pipe, special sections (such as elbows and branch connections), and coupling bands conforming to Subsection 707.02 for the dimensions and thicknesses specified. Fully line the pipe and special sections with concrete according to ASTM A849, Class C.

707.14Invert -Paved Corrugated Steel Pipe. Provide pipe, special sections (such as elbows and branch connections), and coupling bands conforming to Subsection 707.02 for the dimensions and thicknesses specified. Pave the invert of the pipe and special sections with concrete or asphalt material according to ASTM A849, Class A or Class C.

707.15Cast Iron Soil Pipe and Fittings. Conform to ASTM A74, Class SV for the designated sizes.

707.16Seamless Copper Water Tube and Fittings. Conform to ASTM B88, Type L for the des ignated sizes.

707.17Gaskets for Metal Pipe.

(a)O-ring gaskets for flexible metal pipe. Conform to ASTM C1619, Class C.

(b)Continuous flat gaskets for flexible metal pipe with flat bands or bands with projections.

(1)Conform to ASTM D1056.

(2)Gasket thickness ½ in greater than the nominal depth of pipe corrugations

(c)Continuous flat gaskets for flexible metal pipe with corrugated bands.

(1)Conform to ASTM D1056.

(2)Gasket thickness ⅜ in

707.18Gaskets for Ductile Iron Pipe. Conform to ASTM A746.

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