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i 6.07 FLANGED CONNECTIONS i A. All flanged pipe barrels shall comply with the physical and chemical requirements as set forth in the Handbook of Ductile Iron = Pipe Research Association . Flanges shall be in accordance with ANSI Specification 816 . 1 for Class 125 flanges. Bolts shall be stainless and comply with ANSI Specification 818.2. i B . Flanged pipes shall be faced and drilled to the American Standard Drilling , unless special drilling is called for or required . Where tap or stud bolts are required , flanges shall be tapped . Flanges shall be accurately faced and drilled smooth and true , at right angles to the pipe axis, and shall be covered with zinc dust and tallow or a rust preventive compound immediately after facing and drilling . ` C . Flanged pipe with screwed-on flanges shall be furnished with long hubs, and the flanges shall be screwed on the threaded end of the pipe in the shop and the face of the flange and end of pipe refaced together. There shall be no leakage through the pipe threads and the flanges shall be designed to prevent corrosion of the threads = from outside . D . Flanged joints shall be made with bolts or stud bolts and nuts . Bolts , stud bolts, and nuts shall conform to American Standard heavy dimensions, semi-finished with square or hexagonal heads and cold punched hexagonal nuts , meeting the requirements of i ASTM Designation A-307 . Bolt sizes shall be American Standard for the flanges specified , and bolts and nuts shall have good , true threads . i E. Gaskets shall be in accordance with AWWA Standard Specifications C115/A21 . 15-99 , or latest revisions . r 6.08 SUBMITTALS Before starting fabrication of the ductile iron pipe and fittings , the = Contractor shall submit complete detailed working drawings for approval by the Engineer and IRCDUS . Such drawings shall show the piping layouts and contain schedules of all pipe , fittings, valves, expansion joints, hangers and supports, and other appurtenances . Where special fittings are required , they shall be shown in large detail with all necessary dimensions . The drawings submitted shall show flanged joined sections = placed so as to be removable without disturbance to the main pipe sections . 6.09 MARKING ` A. Number 10 stranded conductor copper trace wire shall be spiral wrapped or affixed to the top of the pipe . See Trace Wire Detail i M - 16 for specifications regarding installation . i 6 - 4 _