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2.07 Grooved Couplings <br />2.08 Flanged Adapters <br />2.09 Wall Sleeves, Pipes, and Castings <br />2.10 Wall Penetration Seal <br />2.11 Unions <br />2.12 Insulating Type Fittings <br /> <br />2.02 DUCTILE IRON PIPE (DIP) AND FITTINGS <br /> <br />A. Ductile iron pipe shall conform to the requirements of AWWA/ANSI <br />C151/A21.51. <br /> <br />1. Provide pipe with a wall thickness for buried and encased piping conforming <br />to the following: <br /> <br />Size Pressure Class <br />4-inch through 6-inch 350 <br />8-inch through 20-inch 250 <br />24-inch 200 <br />30-inch through 64-inch 150 <br /> <br />2. Subject each ductile iron pipe to a hydrostatic test of at least 500 psi for 10 <br />or more seconds. <br /> <br />a. Subject pipes of diameter 18 inches or larger to a continuing hydrostatic <br />test in which the pressure is elevated from 500 psi to a peak pressure <br />that induces a stress in the pipe wall equivalent to 75% of the minimum <br />specified yield of ductile iron (42,000 psi) as calculated by: <br /> <br /> P =2 f t <br />d <br />s× × where: P = peak hydrostatic pressure <br />fs = stress in pipe wall during <br />hydrostatic test (0.75 times the <br />minimum yield strength of the <br />ductile iron in tension) <br /> t = nominal wall thickness, inches <br /> d = outside diameter, inches <br /> <br />B. The pressure classes indicated above are the minimum permitted unless noted <br />elsewhere. <br /> <br />C. Fittings for use with the ductile iron pipe specified above shall be ductile iron. <br />1. Cast ductile-iron fittings shall be pressure rated at 250 psi, minimum. <br /> <br />2. Fittings with mechanical joints, flange joints and push-on joints shall conform <br />to AWWA/ANSI C153/A21.53. <br /> <br />City of Sunny Isles Beach <br />NE 174th Street Roadway Improvements <br />15105 - 4 Pipes and Tubes <br />14-1758 / 09-19-2014 <br />