Specifications include, but are not limited to: Pipe shall be ductile iron and shall be manufactured in accordance with the latest edition of AWWA C150 and C151 and AWWA/ANSI C104/A21.4-Standard for Ductile Iron Pipe, Centrifugally Cast in Metal Molds or Sand-lined Molds, for the water distribution system of the Louisville Water Company. Water temperature inside the pipe will vary from approximately 34° F to 84° F. Water pressure rating for the pipe shall be equal to or exceed the measurements listed below, with a nominal metal thickness as noted in these specifications. All pipe shall be furnished with push-on joints as per the latest edition of AWWA/ANSI C151/A21.51, Sec. 51.2.6.; 2. METAL THICKNESS REQUIRED FOR DUCTILE IRON PIPE Rated Working pressure (meet Nominal Size or exceed) Metal Thickness 4” 350 0.25” 6” 350 0.25” 8” 350 0.25” 10” 350 0.26” 12” 350 0.28” 14” 350 0.31” 16” 350 0.34” 20” 350 0.38” 24” 250 0.43” 30” 250 0.49” 36” 250 0.56” 48” 250 0.70”
