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WALTON <br /> ENGINEERING, INC. <br /> TANK HOLDDOWN/BUOYANCY CALCS <br /> TIGER MART - 2-105 COUNTRY CLUB BLVD_ <br /> STOCKTON, CA <br /> THIS CALCULATION 15 FOR TWO TRUSCO EIGHT FOOT DIAMETER 12,000 GALLON <br /> CALCULATION 15 BASED ON THE SINGLE DIESEL TANK, WHICH 15 "WORSE CASE". <br /> A55UME TANK, BACKFILL, AND SLAB COMPLETELY SUBMERGED: <br /> SUBMERGED WEIGHT OF CONCRETE = 81.6 PCF <br /> SUBMERGED WEIGHT OF BACKFILL = 60.0 PGF <br /> I. OVERBURDEN ABOVE TANK - PER PE[/RP 100-94 CAN BE CALCULATED <br /> USING THE FOLLOWING FORMULA: <br /> ((H/3) (Bl + 52 +V B1 B2 )) - ((V/2) + M) <br /> D = TANK DIAMETER 9-1" = S.1 FT. <br /> d = BURIAL DEPTH (FROM BOTTOM OF TOP SLAB) = 333 FT. <br /> H = (D/2) + d = 1.38 FT. <br /> L = TANK LENGTH = 32 FT. <br /> Bl = SLAB AREA = (L+4) * (D+3) = 36 * 11.1 = 399.6 SF. <br /> 52 = REFLECTED TANK AREA (D*L) _ (8.1 * 32) = 2592 5- <br /> F-V = TANK DISPLACEMENT = 12,000 GALLONS = 1604 CUBIC FEET <br /> M = VOID IN OVERBURDEN = 2 - 42"0 MANWAY, APPROX. 4' DEEP <br /> _ ?f* (3.572) 2* 4 = 38.48 CUBIC FEET * 2 = -(6.c3l <br /> THEREFORE, OVERBURDEN ABOVE TANK WOULD BE EQUAL TO: <br /> (39910 + 2592 + 399.6 * 2592)) - (1604/2 + 76.131) <br /> _ (2.46 * 980.63) - 519 = 1533.35 C.F. <br /> 1533.35 CF. ,, 60 PCF = 92,001 LBS <br /> 2. CONCRETE SLAB AT GRADE = 399.6 * 0.6l * 51.10 = 23,453 LBS <br /> 3. TANK WEIGHT (FROM MANUFACTURER) = 11,423 LBS <br /> 4. TANK TOP ANCILLARY EQUIPMENT = 2,000 LBS <br /> TOTAL UPLIFT FORCE (UF) R ' ► <br /> ,> <br /> _ (1604 + -16.96) * 62.4 = 104092 L58 OCT 17 1995 <br /> e <br /> ENVIRONMENTAL HEALTH <br /> TOTAL RESISTANT FORCE (RF) :.._ <br /> PERMIT/SERVICES p�T.161995 <br /> = 92,001 + 23,453 + 11,423 + 2000 = 128,8-11 LBS <br /> RF > UF, .: OK, HOLDDOWNS NOT REQUIRED AT 48" BURY DEPTH (PER DRAWINGS) <br /> SAFETY FACTOR = 128,811/104,892 = 1.23 <br /> 843 Riske Lane,West Sacramento,CA 95691 (916)372-1888.FAX 373-1172 <br /> Mailing Address: P.O. Box 1025,West Sacramento,CA 95691 <br />