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Seismic Calculations-Coolant Tank and Waste Water Tanks <br /> Calculating Seismic Forces <br /> From 2006 International Building Code,ACE 7-05 <br /> Coolant Tank and Wastewater Tank <br /> Shear(lateral movement) shear <br /> Tank length 68 inches <br /> Tank width 46 inches <br /> Tank height 49 inches <br /> Tank capacity 480 gallons <br /> Weight tank contents full tank 4003.2 pounds <br /> Weight tank 1350 pounds from tank specs <br /> Weight tank and contents 5353.2 <br /> Number of bolts per bracket 3 <br /> Bolt size 3/4" <br /> Bolt strength, shear 4275 pounds <br /> Total bolt strength, 3 bolts (shear) 12825 pounds <br /> Max V(base shear) 0.173809 W <br /> Max V 930.43 pounds ok in shear <br /> Overturning shortest side <br /> Overturning moment 1899.63 ft lbs <br /> 9070.82 ft lbs assume vertical force of earthquake = 2/3 V <br /> Resisting moment due to weight of tank and contents <br /> also ok for overturning because of wire cable, and due to height of <br /> steel angles (6' x 6" x 16") <br /> and proximity to wall on one side <br /> pullout strength one 3"4 bolt 2825 lbs <br /> resisting moment due to one 3/4" bolt 10829.17 ft lbs <br />