A. All joints and connections shall be made gastight and watertight. All cast iron pipe joints shall be approved mechanical joints, Federal Specification (QQ-L-156), not less than one inch deep. Lead shall be run in one pouring and calked tight. No paint, varnish or other coatings shall be permitted on the jointing material until after the joint has been tested and approved.
B. All joints in vitrified clay pipe or between such pipe and metals shall be made with approved hot-poured jointing material, approved rubber gaskets, Okum and sewertite, Okum and AmVit, or an approved equal method and material.
C. Material for hot-poured joints shall not soften sufficiently to destroy the effectiveness of the joint when subjected to a temperature of one hundred sixty degrees Fahrenheit, nor be soluble in any of the wastes carried by the drainage system. The joint shall first be caulked tight with jute, hemp, or similar approved material.
D. Other jointing materials and methods may be used only by approval of the superintendent.
(Ord. 81-50 § 6, 1980; prior code§ 20.512).