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IRRIGATION <br />Section 02810 <br />Project 15-1207 <br />e. Assembly: Allow pipe to be assembled and welded on the surface or in <br />the trench. <br />f. Expansion and Contraction: Snake pipe from side to side of trench to <br />allow for expansion and contraction. <br />g. Location: Locate pipes as shown on Drawings except where existing <br />supply valves, utilities or obstructions prohibit or where slight changes <br />are approved to better suit field conditions. <br />2. Flexible Elastometric Seal Joints: <br />a. General: Assemble in strict conformance with the pipe manufacturer's <br />instruction. <br />b. Rubber Rings: Use rubber rings specific for water service systems. <br />C. Cleaning: Thoroughly clean ring and groove of dirt, moisture and debris <br />using a clean, dry cloth. Do not use solvents, lubricants, cleaning fluids <br />or other material for cleaning. <br />d. Seating: Properly seat ring in groove. <br />e. Spigot: <br />1.) General: Clean spigot -end of pipe as in "Cleaning" above prior to <br />applying lubricant recommended by pipe manufacturer. <br />2.) Seating: Insert spigot into bell and seat to full depth required. <br />3. Connections: <br />a. Threaded Plastic Pipe Connection: <br />1.) Use Teflon tape or pipe joint compound. <br />2.) When assembling to threaded pipe, take up joint no more than <br />one full turn beyond hand -tight. <br />b. Metal Valves and Plastic Pipe: Use threaded plastic male adapters. <br />C. Metal to Metal Connections: <br />1.) Use specific joint compound or gasket material for type of joint <br />made. Where pipe of dissimilar metals are connected, use <br />dielectric fittings. <br />2.) Where assembling, do not allow more than three full threads to <br />show when joint is made up. <br />11 <br />