Pipe of any of the following categories and specifications is authorized within the city in either water mains or sub-mains.
   (A)   Ductile iron pipe shall be manufactured in accordance with AWWA-C150- 76 (ANSI A21.50-76) and AWWA-C151-76 (ANSI A 21.51-76) specification. Centrifugal ductile iron pipe shall have a metal thickness based on a tensile strength of 60,000 pounds per square inch, a yield strength of 42,000 pounds per square inch and an elongation not to exceed 10% and shall be designed for a five-foot cover trench, conditions (b); and
   (B)   Rigid poly vinyl chloride (PVC) pressure pipe and fittings shall meet requirements of American Water Works Association as per AWAA C900 and ASTM D- 2772 for a working pressure of 150 pounds per square inch with outside dimensions the same as outside dimensions of cast iron pipe and a standard dimension ratio SDR-18. Each joint must be installed with a rubber ring and ball as a part of each joint to provide for contraction and expansion. Pipe and fittings must be installed in accordance with manufacturer recommendation and specification. Each length of pipe shall be tested to four times the class pressure of the pipe for a minimum dwell of five seconds. All pipe and fittings shall be free of defects, scars, blemishes, cracks, or other imperfections.
(Prior Code, § 52.07)