The size, slope, alignment, materials of construction of a building sewer, and the methods to be used in excavating and backfilling the trench, installing jointing, and testing the building sewer, shall conform to the Uniform Plumbing Code as hereinafter modified.
A. Minimum internal pipeline diameter for all building sewers shall be four inches.
B. Building sewers shall be constructed of one of the following pipeline materials:
1. Extra-strength vitrified clay pipeline and fittings conforming to ASTM C 700;
2. Polyvinyl chloride (PVC) gravity sewer pipe and fittings, Type PSP or PSM conforming to ASTM Standards 3033 or D 3034. All PVC sewer pipe shall be at least Schedule 40;
3. Reinforced concrete pipe properly coated and not less than 36 inches in diameter conforming to ASTM C 76;
4. ABS composite sewer pipe conforming to ASTMD 2680;
5. Reinforced plastic mortar pipe con-forming to ASTM D 3262;
6. Asbestos-cement nonpressure sewer pipe conforming to ASTM C 428; 7.
7. Cast or ductile iron pipe with a minimum pressure rating of one hundred fifty pounds per square inch conforming to Federal Specification WW-P421b, or ANSI A21.51, A21.6 or A21.8, except that iron used in the manufacture of pipe shall have minimum design strength value, in pounds per square inch, of twenty-one thousand for bursting strength and forty-five thousand for modulus of rupture.
(Ord. 622 Art. 4 § 6, 1981)