7.2.6.4.Cast-Iron Water Pipes

(1) Cast-iron water pipes shall conform to ANSI/AWWA C151 / A21.51, “Ductile-Iron Pipe, Centrifugally Cast.” (2) Cement mortar lining for cast-iron water pipes shall conform to ANSI/AWWA C104 / A21.4, “Cement-Mortar Lining for Ductile-Iron Pipe and Fittings.” (3) Cast-iron fittings for cast-iron or ductile-iron water pipes shall conform to ANSI/AWWA C110 / A21.10, “Ductile- Iron and Gray-Iron Fittings.” (4) Rubber gasket joints for cast-iron and ductile-iron pressure pipe for water shall conform to ANSI/AWWA C111 / A21.11, “Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.”