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6 . 07 FLANGED CONNECTIONS <br /> A. All flanged pipe barrels shall comply with the physical and <br /> chemical requirements as set forth in the Handbook of Ductile Iron <br /> Pipe Research Association . Flanges shall be in accordance with <br /> ANSI Specification 816 . 1 for Class 125 flanges . Bolts shall be <br /> stainless and comply with ANSI Specification 818 . 2 . <br /> Be Flanged pipes shall be faced and drilled to the American Standard <br /> Drilling , unless special drilling is called for or required . Where tap <br /> or stud bolts are required , flanges shall be tapped . Flanges shall <br /> be accurately faced and drilled smooth and true , at right angles to <br /> the pipe axis , and shall be covered with zinc dust and tallow or a <br /> rust preventive compound immediately after facing and drilling . <br /> C . Flanged pipe with screwed-on flanges shall be furnished with long <br /> hubs , and the flanges shall be screwed on the threaded end of the <br /> pipe in the shop and the face of the flange and end of pipe refaced <br /> together. There shall be no leakage through the pipe threads and <br /> the flanges shall be designed to prevent corrosion of the threads <br /> from outside . <br /> D . Flanged joints shall be made with bolts or stud bolts and nuts . <br /> Bolts , stud bolts , and nuts shall conform to American Standard <br /> heavy dimensions , semi-finished with square or hexagonal heads <br /> and cold punched hexagonal nuts ; meeting the requirements of <br /> ASTM Designation A-307 . Bolt sizes shall be American Standard <br /> for the flanges specified , and bolts and nuts shall have good , true <br /> threads . <br /> E . Gaskets shall be in accordance with AWWA Standard <br /> Specifications C115/A21 . 15-99 , or latest revisions . <br /> 6 .08 SUBMITTALS <br /> Before starting fabrication of the ductile iron pipe and fittings , the <br /> Contractor shall submit complete detailed working drawings for approval <br /> by the Engineer and IRCDUS . Such drawings shall show the piping <br /> layouts and contain schedules of all pipe , fittings , valves , expansion <br /> joints , hangers and supports , and other appurtenances . Where special <br /> fittings are required , they shall be shown in large detail with all necessary <br /> dimensions . The drawings submitted shall show flanged joined sections <br /> placed so as to be removable without disturbance to the main pipe <br /> sections . <br /> 6 . 09 MARKING <br /> A. Number 10 stranded conductor copper trace wire shall be spiral <br /> wrapped or affixed to the top of the pipe . See Trace Wire Detail <br /> M- 16 for specifications regarding installation . <br /> 6 - 4 <br />