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Project Title: 7-Eleven Fuel Tanks <br /> Discipline:Structural <br /> CULLUMBER ENGINEERING <br /> Project No.: CN1117 Originator: C.Dilworth I I Date: 5/17/2018 <br /> omponent:I Buoyancy Calculations Checkedd W.Cullumber I Date: 5/17/2018 <br /> Buoyancy Equation <br /> Fb= p*g*V <br /> Water(p)= 62.4 Ib/ft^3 <br /> g= 32.2 ft/sec^2 <br /> V1(tank#1)= 20000 gallons <br /> Conversion= 0.133681 <br /> V1(tank#1)= 2673.62 ft^3 <br /> V2(tank#2&3)= 20000 gallons <br /> V2(tank#2&3)= 2673.62 ft^3 <br /> Uplift Buoyancy Forces <br /> Fbl= 5372051 Ibft/sec^2 <br /> Conversion= 0.031081 <br /> Fb1= 166968.5 Ibf <br /> Fb2&3= 5372051 Ibft/sec"2 <br /> Conversion= 0.031081 <br /> Fb2&3= 166968.5 Ibf <br /> Self-weight of Concrete Slab <br /> Trib.Width= 12 ft <br /> Length= 36 ft <br /> Depth= 3 ft <br /> Volume= 1296 ft^3 <br /> Density= 150 Ib/ft^3 <br /> Total Weight= 194400 Ib <---Downward <br /> VS. <br /> 166968.5 Ib <---Uplift <br /> The Deadmen slab shall be 36'Ione x 3'deep x 12'wide(trib.to each tank)to achieve adequate <br /> weight to resist buoyancy force. <br /> Anchorage <br /> Fbt,2&3= 166968 Ib Total (Buoyancy force is the same for both tanks) <br /> Number of Straps= 6 <br /> Number of Anchors= 12 <br /> Uplift force per Anchor= 13914 Ib (See Simpson Output) <br /> The contractor shall install(1)PAB7 anchor bolt w/12"min.embedment @ ea.anchor point on straps. <br /> 2of10 <br />