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Page 9 of 13 C. BONDING AND ACHSIVFS SYSTF3 (Fiberglass pipe) : (CONTINUED) 3. Inspect all fittings for for roP joints. p te' gnment and possible "back -out" at the 4. Follow pipe manufacturer's relations on cure time before disturbing joints or testing. In areas of temperature below 60 degrees F16 be necessary to apply heat for curing adhesive. ( degsec it will Only ch devices re=mw-nded by pipe manufacturer area emical or electrical open flame or acceptable for this purpose. No sparkling devices are to be used. 1. Threaded joints must be reamed and have clean cut, perfect threads and be made up with non -hardening joint cwPOUnd insoluble in Company Representative. petroleum products approved by 2. Approved joint : Rectorseal Gilbarao pipe Joint Permatex 57 E. FIBERGLASS TO SI'F'Fr' PIPE TIONS: Fiberglass madded- nd adapters d �re are to be threaded into the steel pipe or fitting before bonding ontoiberglass pipe. F. SWING JOIN'T'S: Use steel pipe and fittings: two 90 degree elbows with nipple connection (do not use close nipple or street ell) at vent risers only. G. FI=BLE CONNECTORS: Use flexible connectors for connection of product and vapor return piping at tanks and dispensers, and for vent piping at tanks. . SPECIAL, FITTINGS: 1. The shut-off valve ("Shear" or "Safety" valve) at the base of the product pump or dispenser is to be secured in position with a steel stabilizer as detailed on the drawings. 2. Position the valve so that the line test port plug is accessible. PIPE WRAPPING: All underground steel pipe and fitth-,gs shall be field primed and wrapped. Wrapping material shall be 35 mil polyethylene tape "polyken 930" manufacturered by the Kendall Company (or equal approved by Ccepany Representative). Wrap overlap shall be one-half width of wrapping material. Wrap 1-1/2" and 211 fittings with POlyken 900 (12 mils) with a 60% overlap. in difficult areas Polyken 931 can be used before wrapping with Polyken 900. Primer shall be Polyken 927. J. SETTING AND BEDDING PIPE: 1. A 4" minimum bed of backfill material is to be placed in all piping trenches. Smooth, ccupact and slope bedding material to allow a slope of 1/4" per foot toward the tanks. In extreme conditions, 1/8" per foot may be used if approved by Owner's Representative, refer to other portions of these specifications. 2. Piping shall be placed on prepared bed in such a manner as to minimize points at which one pipe may cross over another pipe. At points where piping must cross over, a minimum of one pipe diameter must separate the pipes. 6.20