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Jul 19 02 09: 41a M"D Petroleum Engineering 91 "-984-1117 p. 2 <br /> fo' MARK From Modem Welding Co 559-275 4381 7f16/D2 15 25.28 Page 1 of 2 <br /> Buovancv of Underground Tanks 7/f ei0' <br /> Fiber glass Straps with Deadman Anc11Ur s <br /> "Bold Typed Items are Input Values" <br /> Underground Tanh Drxilplluri. 22ouct gallon Glasteei I1 wile wee coinpaiimont•. <br /> Tank Model: GS-58 <br /> Outer Tank Diameter(Inches): 114 <br /> Tank Length(Inches): 49B <br /> Tarim i;apacity fGallonsf ZZUUd <br /> Taro; buoyancy 183.h5/ <br /> Primary Shell Thickness(Inches)' 0.25 <br /> Secondary Shell Thickness(Inches): 0 <br /> Accessories Weigh[extra 3000 <br /> CalcUfated Tank Weight: 17,093 -17,093 <br /> Sumps I Enclosures <br /> Qua nilly,of Item 1 enclosures 6 <br /> Item 1:"Diameter"(Inches)' 42 <br /> Item 1: "Height"(inches): 54 OK <br /> Quantity of Item 2 sltclosures 0 <br /> nem t:"Ulameter(inches): 0 <br /> Item 2: "Height"(inches); 0 OK <br /> Buoyancy contributed by enclosures: 16210 <br /> Net Tank Buoyancy: 182.673 <br /> Concrete Stab at Grade <br /> Concrete weight/cubic foot 150 <br /> Surface Concrete Slab Thickness(Inches): 8 <br /> Wright of concrete Slab: 52,32.5 <br /> (Slab si_:.24":•tank diameter.48">tar*length) <br /> Burial and Water Table Depth <br /> Net saturated soil weight to overcome buoyancy 576 <br /> Saturated backfill weight/#CubiC foot. 120 <br /> Dry backfill weight 10 cubic foot: too <br /> Tall Burial Depth,Top of tank to grade(Inches): 54 <br /> Elevation of water table,"0 Inches"Is flooded holo: 54 <br /> Weight of Backfill directly over tank: 174.278 <br /> Overburden lost due to sump size and number, 4650 <br /> Net Overburden= 169,627 <br /> Deadman Configuration <br /> Oaadman Anchor widih(Inches): 0 OK <br /> Deadman Anchor height(Inches): 12 OK. <br /> Deadman anchor length(Inches): 0 OK <br /> Deadman Contribution toward Ovcrcomnq Buoyancy: 0 <br /> Total Weigtrt Concrete.Overburden&Deadman Contributions. 221,952 <br /> It=( I then InSUlhcictlt Buoyancy ResUhs: 34.279 <br /> SAFE r Y FACTOR1.2 1.22 ACCEPTABLE <br /> Required <br /> Flberglasy Holddown Straps <br /> Net BOUydncy reaction to be overcome by straps 39.279 <br /> Number of Holddown straps used on lank: 0 Strap Size 3116"x 2"each <br /> Maximum Allowable Load associated with strap: 28,500 pounds/strap <br /> Straps combined strength to u�trct ,imy buuywwy 0 pounUs <br /> SAFETY FACTOR 130 0.00 JIN3UFFlCIENT <br /> Required <br /> Special T4010: <br /> Deadman,holdoowns,overburden back118 and concrete cover all act together as a complete system. <br /> If anyone of mese elements is not fully utilized,holddovnl system may not function adequately. <br /> Disclaimer Statement' <br /> I ne attaChcd intormation is Supplied to you for information purposes only <br /> Therefore,Modem Welding Company,their officers,rfiregtor;nor subsidiaries there of accept any/no <br /> responsibility for,the use of this information covered within.This information is advisory,only and the use <br /> of the material and methods is solely at the risk of the user <br /> 1 <br />