COMPLIANCE INFO_2020 - Laserfiche WebLink

Home Browse Search

Hydrostatic,Soil and Concrete Calculations for Waste Oil Tank: Hydrostatic pressure in tank.- Note ank:Note that UL 142 requires testing at the factory under 25 psi pressure For tank bottom perimeter: Tank volume,gallons 250 gallons Tank volume,cu ft 33.4 cu ft Area of inner tank,sq in 1444 sq in See manufacturer's drawing Area of inner tank,sq ft 10.03 sq ft Max liquid height in tank,ft 3.3 ft Max liquid height in tank,in 40 in Water pressure per foot of depth 0.433 Ib/sq in Liquid specific gravity 0.9 Pressure at bottom of tank 1.30 Ib/sq in Total force on bottom of tank due to liquid pressure 1877 lbs Tensile strength of steel 36,000 Ib/sq in Weld efficiency 70 % Effective yield strength 25,200 Ib/sq in Total length,tank bottom perimeter 176 in Tank thickness,measured 0.149 in See Table II Cross section area of tank bottom perimeter 26.2 sq in Tensile stress at bottom tank perimeter 72 Ib/sq in Factor ofsafety 352 ok Pressure on concrete: for Waste Oil Tank: Weight of tank and contents 3001 lbs Number of supports on which tank rests 2 Area of supports on which tank rests 352 sq in Pressure on concrete 9 Ib/sq in Hydrostatic,Soil and Concrete Calculations,continued Compressive strength,concrete 3000 Ib/sq in Factor ofsafety 352 ok Pressure on soil due to concrete alone 0.462 Ib/sq in Total pressure of tank,contents and concrete 8.99 Ib/sq in Allowable pressure,soil 1500 Ib/sq in Factor ofsafety 167 ok for Waste Coolant Tank.- Hydrostatic ank:Hydrostatic pressure in tank.- Note ank:Note that UL 142 requires testing at the factory under 25 psi pressure For tank bottom perimeter: Max liquid height in tank 43 in See manufacturer's drawing Water pressure per foot of depth 0.433 Ib/sq in Liquid specific gravity 1 Pressure at bottom of tank 1.55 Ib/sq in Area of tank bottom 3128 sq in Total force on bottom of tank due to liquid pressure 4404 lbs Tensile strength of steel 36,000 Ib/sq in Weld efficiency 70 % Effective yield strength 25,200 Ib/sq in Total length,tank bottom perimeter 228 in Tank thickness,measured 0.149 in Cross section area of tank bottom perimeter 34.0 sq in Tensile stress at bottom tank perimeter 130 lbs/sq in Factor ofsafety 194 ok Hydrostatic,Soil and Concrete Calculations,continued Pressure on concrete: for Waste Coolant Tank.- Weight ank:Weight of tank and contents 5754 lbs Number of supports on which tank rests 2 Area of supports on which tank rests 184 sq in supports are 2"wide Pressure on concrete 31 Ib/sq in Compressive strength,concrete 3000 Ib/sq in Factor ofsafety 96 ok Pressure on soil.- Pressure oil:Pressure on soil due to concrete alone 0.462 Ib/sq in Total pressure of tank,contents and concrete 31.73 Ib/sq in Allowable pressure,soil 1500 Ib/sq in Factor ofsafety 47 ok