The following are limitations and bedding requirements for supportive strength and shall be adhered to at all times.
(A) Six- and eight-inch pipe. Installation of eight-inch PVC pipe with more than 14 feet of cover use Type II, granular embedment.
(B) Ten-inch and 12-inch pipe. Installation of ten-inch and 12-inch PVC pipe with more than 12 feet of cover, use Type II, granular embedment.
(C) Ductile iron pipe. Installation of ductile iron pipe with more than 20 feet of cover, use Type II, granular embedment; more than 30 feet of cover, use Type III, granular embedment. This is regardless of ground water and/or soil conditions. In areas having two and one-half feet and less or 18 feet and more of cover, use ductile iron pipe.
(Ord. passed 6-21-2011)