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1 7"CONCRETE SLAB <br /> AT 87.6 LB/CF <br /> I I <br /> I I <br /> I I x <br /> I a <br /> I o <br /> 21 r <br /> 4'DIA. O2 <br /> I SUMPS m <br /> I I � <br /> I I e <br /> I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> TANK <br /> 010 <br /> 11�3aoz OL <br /> CGRAVEL <br /> UMN1 1EUIV®® <br /> I O I <br /> MAY 22Z018 <br /> .6T z 1.DIMAN S <br /> %j <br /> DEAMAN I <br /> ENVIRONMENTAL <br /> HEALTH DEPARTMENT <br /> BUOYANCY CALCULATIONS(20.000 GALLON TANK) <br /> CALCULATION BASED ON SUBMERGED WEIGHT OF MATERIALS: V 7 <br /> "XERXES"TANK WITH SPHERICAL ENDS. <br /> (TO-NOMINAL) <br /> TANK LENGTH:371-8 3/F' <br /> TANK DIAMETER:10'-0" <br /> TRY 36'-0"DEADMAN,EACH SIDE,18"WIDE z 8"HIGH <br /> EMPTY TANK UPLI FT= 20,000 GAL =2,674 CU FT <br /> 7.48 GAL/CF <br /> 2,674 CU FTX 62.4 LBS/CF=188857 LBS(DISPLACED WATER) <br /> TANK SUMP UPLIFT=(2)X 3.14 X 2'2 X 4'=100.5 CU FT <br /> 100.5 CF X 62.4 LBS/CU FT=6,271 LBS(DISPLACED WATER) <br /> TOTAL TANK UPUFT=186,857 LBS-6,271 LEIS=173.128 LES T <br /> HOLD DOM CALCULATION <br /> 1.TANK SLAB: <br /> .58'X 14.0'X 42'=341 CU FT <br /> 341 CU FT X 87.6 LBS/CU FT=29,872 LBS 1 <br /> 2.CUBED BACKFILL ABOVE TANKS <br /> 4'X10.0'X37.75'=1,510 CU FT-100.5 CU FT=1,409.5 CU FT <br /> 1.409.5 CU FT X 57.6 LBS/CU FT=81.187 LES 1 <br /> 3.CURVED BACKFILL ABOVE TANK <br /> 3.14 X 5.0'2 X 37.75'=2,963.4 CU FT <br /> 10.99 10.0'X 37.75'=3,775.0 CU FT <br /> 3,775.0 CU FT-2,963.4 CU FT=811.6 CU FT=405.8 CU FT <br /> 2 <br /> 405.8 CU FT X 57.6 LBS/CU FT=23.374 LEST p10FFSSA <br /> 4.GRAVEL COLUMN ABOVE DEADMEN: S B�Rpj <br /> 1.5'X 14.5'X 36.9 X 2=1,566 CU FT 0 <br /> 1,556 CU FT X 57.6 LBS/CU F7=90102 LBS1 h <br /> 5.CONCRETE DEADMEN: & No.78916 P <br /> GAT X 1.5'X 36.0'=36.2 CU FT KKK <br /> 35.2 CU FT X 87.6 LBS/CU FT X(2)=834�LES 1 * a 3/18 <br /> 6.DRY WEIGHT OF TANK: 11SW LBSy <br /> TOTAL HOLD DOWN 242,277 LBS 1 OF Cp�hO <br /> TOTAL HOLD DOWN: 242,277 LBS=1.40 SAFETY FACTOR <br /> TOTAL TANK UPLIFT:173,128 LBS <br />