(A) Generally. All materials shall be new, unused, and of the best standard quality available for the purpose intended. Where A.S.A., A.S.T.M., A.W.W.A. and N.S.F. Standards and Codes have been formulated, materials shall conform to the standards and codes.
(1981 Code, § 28-137)
(B) Vitrified clay sewer pipe. Vitrified clay sewer pipe shall be either glazed or unglazed pipe conforming to the latest revision of A.S.T.M. Specification C-700 for standard strength clay pipe. Joints for clay pipe shall be preformed and shall conform to the latest revision of A.S.T.M. Specification C-425. (1981 Code, § 28-138)
(C) P.V.C. gravity sewer pipe.
(1) P.V.C. gravity sewer pipe shall be manufactured of Type I, Grade I, Polyvinyl Chloride A.S.T.M. D-1784 compounds. Joints for P.V.C. sewer pipe shall be rubber ring bell and spigot or sleeve type with rubber gaskets conforming to the requirements of the latest revision of A.S.T.M. Specifications D-1869 or equal. Bells and sleeves shall be of the long body type providing a deep socket. P.V.C. sewer pipe shall conform to A.S.T.M. Specification D-3033 or D-3034.
(2) Fittings for P.V.C. sewer pipe shall be of the preformed, smooth radius, factory manufactured type. Fittings shall correspond to the dimensions and requirements of the same A.S.T.M. specifications as the sewer pipe.
(1981 Code, § 28-139)
(D) Cast-iron pipe. Cast-iron pipe couplings and gaskets shall conform to Federal Specification WW-P 421b for centrifugally cast-iron pipe. Cast-iron pipe shall be seal coated inside and coated outside. Pipe shall be thickness Class 22. Standard flange connections shall be provided where required in the pumping stations. Fittings may be either mechanical joint or push-on type. Adaptors shall be furnished for connection of cast-iron pipe to adjacent sections of V.C. or P.V.C. sewer lines.
(1981 Code, § 28-140)
(E) Steel casing for sewer lines.
(1) Steel casing for sewer lines shall be new or used steel pipe with a minimum yield strength of 35,000 psi. Minimum wall thickness shall be 0.188 inches for casing under 14 inches. Casing with an O.D. of 14 or 16 inches shall have a minimum wall thickness of 0.219 inches.
(2) The inside diameter of the casing shall be at least 2 inches larger than the outside diameter of the carrier pipe joints. Casing pipe shall be connected by welding to prevent leakage and shall be installed by boring and jacking to lines and grades.
(3) All casing pipe shall be coated with coal tar enamel and wrapped with bonded, 15 pound asbestos felt. If the contractor elects, the casing may be installed without the protective coating, provided the wall thickness of the casing furnished is at least 0.063 inches larger than the minimum wall thickness required for casing with protective coating.
(4) Corrugated metal pipe may be used as casing, provided it is coated and wrapped as specified for steel pipe, and provided it has a minimum 12 gauge wall thickness.
(1981 Code, § 28-141)
(F) Manholes. Manholes may be constructed of precast reinforced concrete sections, manhole masonry blocks, clay brick, or prefabricated fiberglass reinforced polyester.
(1) Precast reinforced concrete manhole sections shall be designed and fabricated in accordance with the latest revision of A.S.T.M. C-478. Shop drawings and manufacturing specifications shall be furnished for approval prior to shipment of precast manholes.
(2) Masonry manhole blocks shall conform to the latest revision of A.S.T.M. Specification C-145 for Grade “A” Blocks.
(3) Clay sewer brick shall conform to the latest revision of A.S.T.M. Specification C-32.
(4) Fiberglass, reinforced composite manholes shall be as manufactured by Owens-Corning Fiberglass Corporation, Series —1, in street loading design, or equal.
(5) Manhole steps shall be installed at 16 inch intervals in all manholes over 36 inches in depth. Steps shall be aluminum or cast-iron standard manhole steps.
(6) Manhole frames and covers shall be cast iron traffic type with a solid lid and a clear round opening of not less than 22 inches in diameter. The bearing surfaces of the frame and lid shall be ground as necessary to provide full surface nonrocking contact. The manhole frame and cover shall weigh at least 300 pounds. The word “sewer” shall be permanently cast into each lid. A hole or slot to facilitate removal shall be provided in each lid.
(1981 Code, § 28-142) (Ord. 649, passed 8-8-1978)