ASTM A762:15 pdf download

ASTM A762:15 pdf download.Standard Specification for Corrugated Steel Pipe, Polymer Precoated for Sewers and Drains.
7.5.2 If a flanged finish is used on the ends ot individual pipe sections to facilitate field jointing, the flange shall he uniform in width, be not less than ‘/2 in. [13 mm] wide, and shall be square to the longitudinal axis of the pipe.
7.5.3 The ends of all pipe which will form the inlet and outlet of culverts, fabricated of sheets having nominal thicknesses of 0.079 in. 12.01 nimj and less, shall he reinforced in a manner approved by the purchaser, when specified.
8. Pipe Requirements
8.1 Type I, Type IA, and 7:vpe IR Pipe:
8. 1 . I Pipe Dimensions—The nominal diameter of the pipe shall he as stated in the order, selected from the sizes listed in Table 1. The size of corrugations which arc standard for each size of pipe are also shown in Table 1. The average inside diameter of circular pipe and pipe to he reformed into pipe arches shall not vary more than I % or ‘/2 in. [13 mml, whichever is greater. from the nominal diameter when measured on the inside crest of the corrugations. Alternatively, for pipe having annular corrugations, conformance with the inside diameter requirement may he determined by measuring the outside circumference, for which minimum values arc given in Table I.
NOTE 7- The outside circumference of helically corrugated pipe is influenced by the corrugation size and the angle of the corrugations, affecting the number of corrugations crossed, therefore no minimum circumferential measurement can he specified.
8.1.2 Sheet Thickness—Sheet thickness shall he as specified by the purchaser from the specified sheet thicknesses listed in Table 6 (Note 8 and Note 9). For Type IA pipe, the thickness of both the shell and the liner shall be given; the thickness of the corrugated shell shall he not less than 60 % of the equivalent Type I pipe; the liner shall have a nominal thickness of at least 0.040 in. 11.02 mm]; and the sum of the specified thicknesses of shell and liner shall equal or exceed the specified thickness of an equivalent pipe of identical corrugations as the shell according to the design criteria in Practice A796/A796M.
NOTE 8—The sheet thicknesses indicated in Table 6 are the thicknesses listed as available in Specification A742/A742M. The specified thickness is based on the thickness of the metallic-coated sheet, not including the thickness of polymer coating.
NolE 9—The purchaser should determine the required thickness for Types I, IA or IR pipe, or Types I, IA or IR pipe to he refirmed into Types II, hA, or hR pipe according to the design criteria in Practice A796i A796M or other appropriate guidelines.
8.1.3 When specified by the purchaser, the finished pipe shall he factory elongated to the extent specified. The elongation shall he accomplished by the use of a mechanical apparatus which will produce a uniform deformation through- out the length of the section.
8.2 Type II, hA and fIR Pipe:
8.2. 1 Pipe-Arch Dimensions— Pipe furnished as Type II, hA. or hR shall be made from Type I, IA, or IR pipe, respectively, and shall be refurmed to provide a pipe-arch.