Resolutions-1997-021

1. Joints: All joints will be confined O-ring gasket meeting ASTM C443. All pipe 36 inches in diameter and smaller will have bell and spigot joints. Pipe larger than 36 inches in diameter may have tongue and groove joints. 2. Wall Thickness: Minimum wall thickness will be B-wall as defined in ASTM C 76. 3. The required pipe strength and bedding requirements shall be calculated on a case-by-case basis. The minimum pipe strength shall be Class III as defined in ASTM C 76. 4. Pipe Markings: All pipes shall be marked with the date of manufacture and ASTM class. If quadrant reinforcement is used, the top shall be marked on the outside of the pipe 5. No lift holes. 6. Hydrogen sulfide shall be considered in the design of concrete pipe sewers downstream from lift stations. B. Ductile iron pipe manufactured in accordance with ANSI/AWWA-C150/A21.50 and ANSI/AWWA-C151/A21.5A and meeting the following standards may be used. 1. Joints: Use push on gasketed joints. 2. Thickness: Use Class 350 AWWA standard unless a thicker wall is required because of depth. 3. Lining and Coating: a. Inside of pipe and fittings: Double thickness cement lining and bituminous seal coat conforming to ANSI/AWWA-C104/A21.4. b. Outside of other pipe and fittings: Standard bituminous coating conforming to appropriate ANSI Standard. C. PVC truss pipe manufactured in accordance with ASTM D2680 and meeting the following standards may be used for pipe 8 inches through 12 inches in diameter. 1. All PVC truss pipe shall be made of PVC compound having a minimum cell classification of 12454B as defined in ASTM D 1784. 2. Joints: Gaskets shall comply with requirements in ASTM F477 and F913. Joint shall meet the requirements of ASTM D3212. 3. Pipe shall have minimum pipe stiffness of 200 psi at 5% deflection per ASTM D2412. D. Poly vinyl chloride (PVC) manufactured in accordance with ASTM D3032-88 and meeting the following standards may be used for 4-inch and 6-inch services.