All joints and connections shall be made gastight and watertight. Cast iron pipe joints shall be firmly packed with oakum or hemp and filled with molten lead, Federal Specification QQ-L-156, not less than one inch deep. Lead shall be run in one pouring and caulked tight. No paint, varnish or other coatings shall be permitted on the jointing material until after the joint has been tested and approved by the public works administrator/engineer. All joints between metallic and nonmetallic pipe or between two types of nonmetallic pipe shall be made with hot-poured jointing material, rubber joint gaskets or cement mortar approved by the public works administrator/engineer. Material for hot-poured joints shall not soften sufficiently to destroy the effectiveness of the joint when subjected to a temperature of 160 degrees Fahrenheit, nor be soluble in any of the wastes carried by the drainage system. The joint shall first be calked tight with jute, hemp or similar material approved by the public works administrator/engineer. Other jointing materials and methods may be used only by approval of the public works administrator/engineer.
(Ord. 486 § 4.14, 1971; Ord. 1387 § 14, 1998)