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Hazardous Waste Tank System July <br /> Written Assessment per CCR Title 22 <br /> ! Tracy Toyota,2895 Naglee Road,Tracy,CA 905304 2014 <br /> . Ultrasonic Thickness Gauge Measurements: <br /> UTG Measurement-The Survey Name: TTOYWO2 <br /> Waste Oil Tank 2 <br /> Data Point ID Thickness Units <br /> i <br /> 01 0.150 IN <br /> 02 0.150 IN <br /> 03 0.140 IN <br /> 04 0.150 IN <br /> 05 0.140 IN <br /> 06 0.160 IN <br /> 07 0.140 IN <br /> 08 0.160 IN <br /> 09 0.140 IN <br /> 10 0.140 IN <br /> Average 0.147 IN <br /> Std. Dev. 0.008 IN <br /> Hydrostatic Calculation <br /> Hydrostatic Calculation -Waste Oil Tank 2 <br /> Rectangular <br /> Material of Construction - Steel <br /> j Yield Strength, psi 30000.00 <br /> Design Yield Strength, psi 25000.00 <br /> Weld Efficiency 0.70 <br /> Effective Yield Strength, psi 17500.00 <br /> Depth of Liquid, in 86.40 <br /> Area of wetted wall, ft2 22.80 <br /> S.G Contents 0.95 <br /> I <br /> Average Pressure, Ib/ft2 213.41 <br /> Resultant Force, lbs 4865.70 <br /> Location of Resultant Force, from bottom, in 28.80 <br /> �. Moment, ftlbf of R 11677.69 <br /> Resisting Moment at top of tank, B 11677.69 <br /> Resisting Moment arm at B ft 5.20 <br /> Resisting Force at B 2245.71 <br /> Resisting Force at bottom of tank at A 2619.99 <br /> Area of tank bottom under tension, in2 5.32 <br /> Tensile stress at tank wall bottom comer, psi 492.48 <br /> Effective Yield Strength >Applied Tensile Stress <br /> Factor of Safety 35.53 <br /> Strandberg Associates 1(866) 388-0404 rwaterguyCcDrwater uy.cam 33 <br /> i <br />