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MISC#4\FILES\9750SPEC Page 14 of 22 1. Product piping must be pitched upward continuously from tanks to risers a minimum of 1/8" per foot. (1/4" per foot is preferred for product piping and mandatory for vent and vapor recovery piping. ) Traps or sags will not be permitted. Group all piping and locate as shown on the plans. Lines are to be laid straight, using fittings for directional and elevation changes. 2 . Do not support piping with foreign objects, such as scraps of wood, pipe, etc. 3 . For bedding of piping runs and backfill of pipe trenches, refer to other portions of these specifications. B. CUTTING OF PIPE: 1. FIBERGLASS PIPE: Cut with a fine-toothed hacksaw blade or an abrasive wheel on a circular power saw. Use a saw guide or "Wrap Around" to ensure a square cut end. Cut pipe end must be within 1/8" of square. 2 . STEEL PIPE: Cut with a hand or power or power-operated pipe cutter, as in normal fitting practice. 3 . TAPERING & REAMING: All cut fiberglass pipe ends must be tapered to 1-3/4" degrees using one of the tapering tools available from the pipe manufacturer. Protect pipe during tapering to prevent damage to pipe. The finish taper shall be smooth, clean and free from surface defects. The length of taper for 2" diameter is 1-5/8" and for 3" diameter pipe is 1-3/411 . For other size pipe, consult pipe manufacturer's instructions. a. Steel pipe ends are to be reamed. C. BONDING AND ADHESIVE SYSTEMS (Fiberglass Pipe) : 1. All fiberglass pipe surfaces to be bonded shall be cleaned with solvent as supplied by pipe manufacturer. If tapered section is wet or moist, dry with propane torch - do not overheat or burn the pipe. If temperature is below 60 degrees F (16 C) warm all tapered surfaces with propane torch - do not overheat or burn the pipe or fitting. Bell and spigot joints are to be made up with epoxy adhesive as recommended by the pipe manufacturer. Adhesive shall be mixed thoroughly in accordance with manufacturer's instructions and shall be applied to both surfaces. Insert the spigot end into the bell using a slight turning motion (one-half turn to a full turn is necessary) and push. 2 . Apply pressure until mechanical lock is achieved. Back axial pressure should be maintained on all previously assembled joints to reduce the chance of separation.