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Seismic Calculations-Waste Oil Tank <br /> Calculating Seismic Forces <br /> From 2006 International Building Code,ACE 7-05 <br /> Latitiude Longitude <br /> 38.1155160 -121.2611250 <br /> Seimic accel Seimic accel <br /> 0.2 sec 1.0 sec <br /> 0.8690 0.4860 <br /> Shear <br /> Tank length 44 inches <br /> Tank width 44 inches <br /> Tank height 76 inches <br /> Tank capacity 250 gallons <br /> Weight tank contents full tank 2085 pounds <br /> Weight tank 1500 pounds from tank specs <br /> Weight tank and contents 3585 <br /> Number of bolts 4 <br /> Bolt size 3/4" <br /> Bolt strength, shear 4275 pounds <br /> Total bolt strength,four 3/4" bolts 17100 pounds <br /> Max V 0.17380869 W <br /> Max V 623.10 pounds ok in shear <br /> Overturning <br /> Overturning moment 1973.16 ft lbs <br /> Resisting moment due to weight of tank 5810.55 ft lbs assume vertical force of earthquake = 2/3 V <br /> and contents <br /> Pullout strength of 3/4"" bolt 2825 pounds <br /> Resisting moment due to one bolt 10358.33 ft lbs <br /> Resisting moment two bolts 20716.67 ft lbs ok for overturning-at least two bolts resist overturning in <br /> every direction <br />