MATERIALS • Ductile Iron Water Pipe Ductile iron water pipe shall be ductile iron pip (DIP), cement lines, class52; and shall have push-on type connection, (ANSI/AWWA 151/A21.51). Ductile iron water pipe from 3” to 42” shall have a nominal 18-foot laying length. Gaskets for the DIP shall be furnished in accordance with ANSI/AWWA C111/A21.1 and shall be manufactured of SBR – styrene butadiene rubber. All DIP shall be rated for 350 psi working pressure. Coating materials for DIP that are in contact with water shall comply with ANSI/NSF Standard 61, as amended and supplemented. • Fittings for Cast Iron and Ductile Iron Pipe Fitting shall be cement lined fittings, with push on or mechanical joints and shall conform with American National Standard for gray iron and ductile iron, 3” through 48”, for water and other liquids. AWWA C110-77 and 4” through 12” AWWA C111. Cement lining shall conform with American National Standard for cement mortar lining for Cast Iron and Ductile Iron Pipe and fittings water reducers and hydrants shall be of the type specified in the proposal and shall conform with American National Standard for Rubber Gasket Joints for cast iron and ductile iron pressure pipe fittings, ANS/AWWA C111-A21.11-79.
