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C. Coating: Unless specified otherwise, all pipe shall be bituminous <br /> coated outside to a dry film thickness of at least 1 mil. <br /> D. Repair: Anywhere that the coating is removed purposely or <br /> accidentally, the area shall be cleaned of any rust, grease, and dirt <br /> and re-coated to a minimum dry film as specified for the individual <br /> piece. <br /> E. Encasement: If and where directed by IRCDUS's Engineer, a <br /> polyethylene encasement shall be provided around pipe, fittings, <br /> and valves. The material, installation, and workmanship shall <br /> conform to applicable sections of AWWA C105 (ANSI A21.5-99), <br /> or latest revision. Installation methods A or B shall be employed <br /> using flat tube polyethylene. The Contractor shall make <br /> provisions to keep the polyethylene from direct exposure to <br /> sunlight prior to installation. Backfilling following installation shall <br /> be completed without delay to avoid exposure to sunlight. <br /> F. All exposed (i.e. aerial crossings) Ductile Iron pipe water mains <br /> shall be primed and painted blue as per IRCDUS Approved <br /> Manufacturer's Product List or equal. <br /> 1.06 BELL AND SPIGOT CONNECTIONS <br /> Joints in bell and spigot pipe shall be push-on, mechanical, or restrained <br /> joints in accordance with AWWA Standard C111 (ANSI 21.11-00), or <br /> latest revision. Pipe restraints shall also be in accordance with IRCDUS <br /> Standards or as directed by IRCDUS's Engineer. <br /> 1.07 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 of the Cast Iron Pipe Research Association, latest revisions. <br /> Flanges shall be in accordance with ANSI Specification B16.1 for <br /> Class 125 flanges. Bolts shall comply with ANSI Specification <br /> B18.2. <br /> B. Flanged pipe 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 <br /> refaced together. There shall be no leakage through the pipe <br /> threads and the flanges shall be designed to prevent corrosion of <br /> the threads from outside. <br /> 1 - 3 <br /> I <br />