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Buoyancy Calculations <br /> Assuming Ground Water is at Grade Elevation and Station is Empty <br /> Station Size 4 Diameter in Feet 8 Depth in Feet <br /> I.TOTAL UPTHRUST <br /> 3.14 x r2 x h=Total Volume(cu.Ft) <br /> Pi 3.14 <br /> Radius squared 2 4 <br /> Height 8 <br /> Total Volume(cu.Ft) 100.48 <br /> Total Hydraulic Upthrust=Total volume x 62.4 lbs(weight of 1 cu. Ft of H2O) <br /> Total Volume 100.48 <br /> Wt of 1 cu.Ft.of H2O 62.4 <br /> Total Hydraulic Upthrust 6269.952 <br /> II.TOTAL MECHANICAL WEIGHT: <br /> A.Station weight:(Including:piping,valves and fittings) <br /> Station Weight 824 <br /> B.Concrete Pad L x W x H=Pad cu.Ft. <br /> Length 0 <br /> Width 0 <br /> Thickness 0 <br /> Concrete Pad Volume 0 <br /> Net weight of 1 cu.Ft of concrete under H2O=87.60 <br /> Concrete Pad Volume 0 <br /> 1 cu.Ft.of concrete under H2O 87.6 <br /> Concrete Pad under H2O 0 <br /> C.Total Mechanical Weight=Station Weight+Concrete Pad Weight <br /> Station Weight 824 <br /> Concrete Pad under H2O 0 <br /> Total Mechancical Weight 824 <br /> III.Total Net Upthrust(Assuming no side loads); <br /> Total Mechanical Weight 824 <br /> Total Hydraulic Upthrust 6269.952 <br /> Resultant Force -5445.952 <br /> *NOTE:If resultant force is negative,additional ballast weight is required <br /> Additional weight(ballast)required(resultant farce/87.6#cu.Ft._.....ft./27=...yards) <br /> Resultant Force 5445.95 <br /> 87.6#Cu.Ft. 87.6 <br /> Total Feet 62.16838 <br /> 27 27 <br /> Yards of Concrete Needed 2.302533 <br />