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w LTON <br />ENGINEERING, INC. <br />FLAME LIQUORS - 1301 KETTLEMAN LANE, LODI, CA 95242 01/20/98 11:21 <br />TANK HOLDDOWN/BUOYANCY CALCULATION - 20,000 GAL. <FLAME602.WK1> <br />THIS CALCULATION IS FOR TRUSCO TANKS, AS DESCRIBED BELOW: <br />CAPACITY 20000 GALLONS WEIGHT 17680 LBS. <br />DIAMETER 10.78 FEET SUMPS 2 <br />LENGTH 30.05 FEET <br />TANK SLAB THICKNESS 0.67 FT. <br />BURY DEPTH (TOP OF SLAB) 5.00 FT. <br />60' GROUNDWATER - ASSUME TANK AND BACKFILL UNSUBMERGED SLAB: <br />UNSUBNERGED WGT OF BACKFILL 122,40 LBS/C.F. (PCF) <br />UNSUBMERGED WGT OF CONCRETE 150.00 PCF <br />WATER = 7.48 GALS./C.F. <br />WATER = 62.40 PCF <br />1. OVERBURDEN ABOVE THE TANK CAN BE CALCULATED USING THE FOLLOWING <br />FORMULA (PER PEI/RP 100-94): <br />((H/3)(Bl + B2 + SgRt B142)) - ((V/2) + M) <br />D = TANK DIAMETER <br />d = BURIAL DEPTH (to BOTTOM of SLAB) = 4.33 FT. <br />H : (D/2) + d = 9.72 FT. <br />L = TANK LENGTH <br />B1 = SLAB AREA = (L+4)*(D+3) 469.25 SQ.FT. <br />B2 = REFLECTED TANK AREA (D*L) = 323.98 SQ.FT. <br />V = TANK DISPLACEMENT = Pi*rr*L = 2743.30 C.F. <br />M = VOIDS IN OVERBURDEN = 42" DIAM. SUMPS : 2 SUMP <br />Pi;(3.5'/2)(3.5'/2) 4.33 FT. * # = 83.38 C.F. <br />THEREFORE OVERBURDEN ABOVE TANK WOULD BE EQUAL TO: <br />H/3 B1+B2 SgRtBI=B2 (V/2)+M <br />3.24 793.23 389.91 1455.03 = 2379.88 C.F. <br />2379.88 C.F.: 122.40 PCF = 291298 LBS. <br />2. CONCRETE SLAB = B1 o SLAB THICKNESS * CONC. WGT. = 46925 LBS. <br />3. TANK WEIGHT (PER MANUFACTURER) = 17680 LBS. <br />4. TANK TOP ANCILLARY EQUIPMENT = 2250 LBS. <br />TOTAL UPLIFT FORCE (UF) _ (V+M) * WATER.WGT.= 176385 LBS. <br />TOTAL RESISTANT FORCE (RF) _ (ITEMS 1.-4,) : 358153 LBS. <br />EXCESS RESIST FORCE RF -UF = 181768 LBS. = 90.9 TONS <br />QED <br />L% NO. C25664 <br />9 REN. 3-31.66 <br />'OF CAL�p4 <br />6 � fj <br />RF MORE THAN UF, THEREFORE, HOLDDOWNS NOT REQUIRED AT 60 " MIN. BURY DEPTH. <br />SAFETY FACTORY = RF/UF = 2.03 (DOES NOT INCLUDE FRICTION FACTORS, <br />WHICH INCREASE MARGIN). <br />-o0o- <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 />