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tTracy Hyundai <br /> Hydrostatic Calculation <br /> Waste Oil Tank <br /> Tank Design Rectangular,Hodzonts <br /> Material of Construction Steel <br /> Yield Strength,psi 36000.00 <br /> Design Tensile Strength,psi 33000.00 <br /> ' Depth of Oil 36.00 <br /> Area of wetted wall,ft2 17.75 <br /> S.G Contents 0,92 <br /> Average Pressure,Ib/ft2 86.11 <br /> Resultant Force,lbs 1528.49 <br /> Location of Resultant Force,from bottom,in 10.60 <br /> Moment,fflbf of R 1350.16 <br /> Resisting Moment at top of tank,B 1350.16 <br /> Resisting Moment arm at e,ft 3.00 <br /> ' Resisting Force at B 450.05 <br /> Resisting Force at bottom of tank at A 1078.43 <br /> Area of tank bottom under tension,int 8.52 <br /> Tensile stress at tank wall bottom corner,psi 126.58 <br /> Design Tensile Strength>Applied Tensile Strength <br /> ' Factor of Safety 260.71 <br /> Tank Design Okay for Hoop Stress <br /> Buckling <br /> ' b 40.00 <br /> d 40.00 <br /> b1 39.30 <br /> d1 39.30 <br /> Zx,in3 825.39 <br /> ' F,lbs 2391.00 <br /> Moment Arm 20.00 <br /> Mp,in Ibf 47820.00 <br /> stress applied by earthquake,psi 1895.00 <br /> design stress,psi 33000.00 <br /> design stress>applied stress,Tank will not buckle <br /> during quake <br /> Factor of Safety 17.41 <br /> Tank Design,Okay for Buckling <br /> ' Figure 8. Hydrostatic Calculation shows tank has sufficient strength for present use. <br /> Tracy Hyundai Emergency Vent Calculation <br /> t Primary Tank <br /> Wetted Tank Area,ft2 55.5 <br /> reduction factor for sprinklers 0.3 <br /> Effective Area,f12 16.65 <br /> ' Required CFH 22150 <br /> D,in 2 <br /> A,ft2 0.021806 <br /> UD 20 <br /> ' P,psig H ft ff UD v2,f0sec:v,ft/sec CFH Re# <br /> 0.05 96 0.019 20 16269.47 127.5518 10012.82 137118.2 <br /> 0.1 192 0.018 20 34346.67 185.3285 14548.29 199228.2 <br /> 0.15 288 0.017 20 54550.59 233.5607 18334.51 251077.7 <br /> 0.2 384 0.017 20 72734.12 269.6926 21170.87 289919.6 <br /> ' 0.25 480 0.016 20 96600 310.8054 24398.22 334115.8 <br /> 0.3 576 0.016 20 115920 340.4703 26726.92 366005.5 <br /> 0.35 672 0.016 20 135240 367.7499 28868.37 395331.2 <br /> 0.4 768 0.016 20 154560 393.1412 30861.58 422626.8 <br /> ' 0.45 864 0.016 20 173880 416.9892 32733.65 448263.4 <br /> 0.5 960 0.016 20 193200 439.5452 34504.3 472511.1 <br /> Figure 9, Emergency Venting is Sufficient With 2" Mushroom Vent <br /> ' Tracy Hyundai 10 Oil Tank <br />