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Hazardous Waste Tank System Nov <br /> Written Assessment per CCR Title 22 2022 <br /> Applied Aerospace Structures Inc.34375 South Airport Way,Stockton,CA 95205 <br /> I <br /> Ultrasonic Thickness Gauge Measurements <br /> Ultrasonic Thickness - Decanting Tank <br /> Data Point Thickness Units <br /> 1 0.240 IN <br /> 2 0.230 IN <br /> 3 0.230 IN <br /> 4 0.230 IN <br /> 5 0.240 IN <br /> 6 0.270 IN <br /> 7 0.260 IN <br /> 8 0.230 IN <br /> 9 0.240 IN <br /> 10 0.240 IN <br /> avera a 0.241 IN <br /> std. dev. 0.014 IN <br /> Hydrostatic Strength Calculation <br /> Hydrostatic Calculation - Decanting Tank <br /> Material of Construction Cylindrical HDPE3000.00 <br /> Yield Strength, psi 1710.00 <br /> Shear Strength, psi 1.00 <br /> Weld Efficienc 1710.00 <br /> Effective Yield Strength, psi 46.80 <br /> Depth of Liquid, in 0.33 <br /> Area of wetted wall, ft2 , one inch method 1.00 <br /> S.G Contents 121.68 <br /> Average Pressure, Ib/ft2 39.55 <br /> Resultant Force, Ibs 15.60 <br /> Location of Resultant Force, from bottom, in 51.41 <br /> Moment, ftlbf of R 51.41 <br /> ResistingMoment at to of tank, B 4.33 <br /> Resisting Moment arm at B, ft 11.86 <br /> Resisting Force at B 27.68 <br /> ResistingForce at bottom of tank at A 0.24 <br /> Area of tank bottom under tension, in2 115.34 <br /> Tensile stress at tank wall bottom corner, psi <br /> Effective Yield Strength > Applied Tensile Stress 14.83 <br /> Factor of Safety <br /> The tank has sufficient strength for its current use. <br /> Strandberg Associates 1(866) 388-0404 John@strand bergassociates.com <br /> 22 <br />