Laserfiche WebLink
3. DEPM OF TANK HOLE: (CONZ'a1=) Page 4 of 13 <br /> d. Vent and vapor return lines shall be sloped 1/4" per ft. down to the tanks. <br /> e. One pipe diameter separation at cross-overs. <br /> f. The Contractor is responsible for any design, materials, equipment, permits <br /> etc. , for shoring or sloping a hole. <br /> 6-150.04 FILL AND BACKFILL, <br /> A. All fill material shall be of a granular nature, free frul vegetation and extraneous <br /> material. Owner's Representative shall inspect and approve the material before it <br /> is spread. Spread material in lifts not to exceed 12 inches and tamp thoroughly. <br /> B. APPROVED 13AC FIT-L, MATERIAIS: <br /> The following materials shall be used up to 12" above the tank: <br /> 1. PEA GRAVEL: A clean, naturally rounded aggregate with a 1/8" minimum and a 3/ <br /> maxim m diameter. Up to 3% of the particles may pass through a #8 sieve. <br /> 2. SMNE OR GRAVEL CRJSIiINGS: Washed material, with particle size between 1/8" <br /> 1/211. Up to 3% of the particles may pass through a #8 sieve. <br /> 3. Approved materials must be dry, free of ice and snow, and meet ASTH C-33, Para <br /> 9.1 for quality and soundness. <br /> VERIFY THAT BAC FILL MATERIAL IS IN ACCORDANCE WITH TANK MANUFACIURER'S SPECIFICATIONS. <br /> BACKFILL ABOVE THE TANK SHALL, BE AGGREGATE BASE, CLASS II, COMPACTED TO 95% R.C. PER <br /> STANDARD SPECIFICATIONS. <br /> C. BEDDING OF TANKS <br /> 1. A 12" minim bed of backfill material is to be placed in the hole, smoothe <br /> sloped to allow a tank slope of 1" in 10' downward toward the fill end prior <br /> setting the tank. <br /> 6-150.06 TANK BOLE LITTER <br /> A. Contractor is to provide and install a Filter Fabric Tank Hole Liner. <br /> 1. The entire tank hole (sides and bottom) shall be covered. Lay the fabric with <br /> foot minimum overlaps. The top of the tank backfill shall also be covered, with <br /> cutouts for risers, etc. <br /> 2. Bedding material is to be placed on the top of the filter fabric. Excess fabric <br /> at the top of the hole should be folded over the backfill materila at subgrade <br /> level. <br /> B. APPROVED FTI= FABRIC MATERIAL: <br /> Dupont "Typar" Spunbond Polypropylene - Style 3401; Phillips Fibers Corp. - "Supac <br /> 4np"; Hoechst "Trevira" Spunbond 1115. <br /> 6. 15 <br />