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D . Dimensions and workmanship shall be as specified by ASTM F714 . PE fittings and transitions shall meet ASTM D3261 . PE pipe shall have a minimum density of 0 . 955 grams per cubic centimeter. All PE pipe and fittings shall have a Hydrostatic Design Basis ( HDB ) of 1 , 600 psi . E . PE pipe and accessories 3" and greater in diameter, shall be 160 psi at 73 .4° F meeting the requirements of Standard Dimension Ratio (SDR) 11 as MINIMUM STRENGTH . R The pipe manufacturer must certify compliance , with the above requirements . 3 .09 MATERIALS FOR PIPE SIZES 3 " AND UNDER A. Materials used for the manufacture of polyethylene pipe and fittings shall be made from a PE 3408 polyethylene resin compound meeting cell classification 345434C per ASTM D3350 ; and meeting Type 111 , Class C , Category 5 , Grade P34 per ASTM D 1248 , B . Polyethylene ( PE) pipe shall comply with AWWA Standard Specifications C901 -96 . C . If rework compounds are required , only those generated in the Manufacturer's own plant from resin compounds of the same class and type from the same raw material supplier shall be used . D . Dimensions and workmanship shall be as specified by ASTM D- 3035 . PE fittings and transitions shall meet ASTM D3261 . PE pipe shall have a minimum density of 0 . 955 grams per cubic centimeter. All PE pipe and fittings shall have a Hydrostatic Design Basis (HDB ) of 1 , 600 psi . E . PE pipe and accessories 3" and greater in diameter, shall be 160 psi at 73 . 4° F meeting the requirements of Standard Dimension Ration (SDR) 11 as minimum strength . R The pipe manufacturer must certify compliance with the above requirements . 3 . 10 FITTINGS A. All molded fittings and fabricated fittings shall be fully pressure rated to match the pipe SDR pressure rating to which they are made . All fittings shall be molded or fabricated by the manufacturer. No Contractor fabricated fittings shall be used unless approved by the Engineer. 3 - 4