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Project Title: 76-Fuel Tanks <br /> Discipline:Structural <br /> CULLUMBER ENGINEERING <br /> Project No.: CN1117 Originator: C.Dilworth/A.Foster Date: 4/16/2019 <br /> omponent:I Buoyancy Calculations Checked:1W.Cullumber Date: 4/16/2019 <br /> BuoVancV Equation <br /> Fb= p*g*V <br /> Fuel(p)= 60 Ib/ft3 *varies by fuel type <br /> g= 32.2 ft/sect <br /> V1(tank#1)= 20,000 gallons <br /> Conversion= 0.13368 V2(tank#2&3)= 20,000 gallons <br /> V1(tank#1)= 2,674 ft3 V2(tank#2&3)= 2,674 ft3 <br /> Tank#1 self weight= 11,300 Ib Tank#2/3 self weight= 12,700 Ib <br /> *Tank 1 weight governs for buoyancy analysis <br /> Uplift Buoyancy Forces <br /> Fb1= 5,165,434 Ibft/sect Fb2&3= 5,165,434 Ibft/sect <br /> Conversion= 0.03108 Conversion= 0.03108 <br /> Fbl= 160,547 Ibf Fb2&3= 160,547 Ibf <br /> Tank#1 Calculation: <br /> Self-weight of Concrete(Curb and Slab) Surcharge Weight of Soil <br /> Concrete Density= 150 Ib/ft3 Trib.Width= 10 ft <br /> Length= 37.73 ft <br /> Width= 1.5 ft Depth= 4.3 ft <br /> Length= 38.0 ft <br /> Curb Depth= 1.5 ft <br /> Volume= 85.5 ft3 <br /> Weight= 12,825 Ib Volume= 1622.35417 ft3 <br /> Density= 115 Ib/ft^3 <br /> Thick= 0.67 ft Soil Weight= 186,571 Ib <br /> Surface Width= 10 ft <br /> Slab Length= 37.73 ft <br /> Volume= 251.5 ft3 <br /> Weight= 37,729 Ib <br /> Total Weight= 261,250 Ib <---Downward <br /> vs. <br /> 160,547 Ib <---Uplift <br /> FS= 1.63 >1.5:.O.K. Tank#1 <br />