AASHTO M36-16 pdf free download
AASHTO M36-16 pdf free download.Corrugated Steel Pipe, Metallic- Coated, for Sewers and Drains.
6.6. Bolts, nuts, and other threaded items used with joining systems shall be zinc coated by one of the following processes: hot-dip process as provided in M 232M/M 232; electroplating process as provided in ASTM B633, Class Fe/Zn 8; or mechanical process as provided in ASTM B695, Class 8. Other hardware items used with coupling bands shall be zinc coated by one of the following processes: hot-dip process as provided in M 232M/M 232; electroplating process as provided in ASTM 8633, Class Fe/Zn 25; or mechanical process as provided in ASTM B695, Class 25.
6.7. Gaskets—If gaskets are used in joining systems, they shall be a band of expanded rubber meeting the requirements of ASTM D1056 for the bRE) closed cell grades, or 0-rings meeting the requirements of ASTM C443M.
7. FABRICATION
7.1. General Requirements—Pipe shall be fabricated in full circular cross section except for Type lilA, which is described in Section 8.4.
7.1.1. Type I pipe shall have annular corrugations with lap joints fastened with rivets or resistance spot welds, or shall have helical corrugations with a continuous lock seam or welded seam extending from end to end of each length of pipe. The type of fabrication used shall be the option of the fabricator unless otherwise specified.
7.1 .2. Type IA pipe shall be fabricated with a smooth liner and helically corrugated shell integrally attached at helical lock seams extending from end to end of each length of pipe. The shell shall have corrugations of nominal 68- or 75-mm pitch.
7.1 .3. Type IR pipe shall be fabricated with helical ribs projecting outward with a continuous lock seam extending from end to end of each length of pipe.
7.2. Corrugations—The corrugations shall be either annular or helical as provided in Section 7.1. The direction of the crests and valleys of helical corrugations shall not be less than 60 degrees from the axis of the pipe for pipe diameters larger than 525 mm, and not less than 45 degrees from the axis for pipe diameters of 525 mm and smaller.
7.2.1. For Type I and IA pipe, corrugations shall form smooth continuous curves and tangents. The dimensions of the corrugations shall be in accordance with Table 1 for the size indicated in the order, except if the depth measurement of one or more corrugations is less than the minimum depth in Table I, the depth of all corrugations between adjacent seams shall be measured and the values of Table 2 for minimum average depth and minimum corrugation depth shall apply.
7.3.2. All rivets shall be driven cold in such a manner that the sheets shall be drawn tightly together throughout the entire lap. The center of a rivet shall be no closer than twice its diameter from the edge of the sheet. All rivets shall have neat, workmanlike, and full hemispherical heads or heads of a form acceptable to the purchaser, shall be driven without bending, and shall completely fill the hole.
7.4. Resistance Spot Welded Searns—The longitudinal seams shall be staggered to the extent that no more than three thicknesses of sheet are fastened by any spot weld. Pipe to be reformed into pipe- arch shape shall also meet the longitudinal seam requirement of Section 8.2.2 (Note 7).AASHTO M36-16 pdf download.
