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Nov 09 05 11 : 04a M I Architects 92594g,&581 p. 2 <br /> Buoyancy of Underground Tanks 11�t U.5 7 119AK l' 9/15/2005 <br /> Fiberglass Straps with Oeadman Anchors <br /> "Sold Typed Items are Input Values <br /> -----�l—Underground Tank Descrycion-Glastee!Il --�— <br /> ____ Tank Model _GS-13 <br /> — Outer Tank Diameter(Inches) 115 -- —_� <br /> Tank Length(Inches):1 341 <br /> Tank Capacit j llons) 15332 ---i <br /> --^---�_-----_ Tank Buoyancy, 127,903 i- <br /> _ _ Primary Shell Thickness(Incl�s):; 0.25 — --� <br /> -- Secondary Shell Thickness(Inches) 0— <br /> Accessories Weight Extra j 800 j <br /> Calculated Tank Weight; 11,008 11,008 <br /> Sumps I Enclosures <br /> Quantity of Item 7 enclosures 4 <br /> —Item 1:"Diameter"(inches):; <br /> Item 1: "Height"(inches 84 OK <br /> Quantity of Item 2 enclosures <br /> Item 2 Diameter'(Inches <br /> _ -Item 2. "Height'(inches}, OK Buoyancycontributedcontributed by enclosures 16810 <br /> Net n Buoy <br /> 133705 Tank a0 <br /> _.._. . 5 - - —.-_—. <br /> - Concrete Slab at Grade -- __- —L <br /> Concrete weight/cubic foot 150 <br /> Surface Concrete Slab Thickness(Inches 8 <br /> -- _ Weight of concrete Slabs _ 21,929 <br /> (Slab size:24">tank diameter,49'>tank len -- T—�---- <br /> _ Burial and Water Table nth_ _ — r ( (/ F <br /> Net saturated soil weight to overcome buoyanc r_—_ 57.6 ?— —i ` � � <br /> Saturated backfill weight!#cubic foo: 120 ! r <br /> _ Drybackfil�ht/#cubic font 100 <br /> Tank Burial Depth,7a of Tank 4o rade Inches 84 <br /> Elevation of water table,"0 inches"is flooded hole- _ 0 (31(0c, <br /> ------- Weight of Backfill directly over tank' 115,475-- <br /> Overburden lost due to sum size and numbZ 16287 <br /> _ Net Overburden# I 99,188 <br /> Deadman Configuration <br /> Deadman Anchor width(!nches 12t OK —_ <br /> — Deadman Anchor height(Inches): 12 OK <br /> Deadman anchor length(inches):, 341 OK <br /> Deadman Contribution toward Overoomkng Buoyan2t i 94,934 <br /> Total Weight Concrete,Overburden 8 Deadman contributions: 216,051 <br /> i <br /> — - ----- — SAFETY Resufks — 82,346 — <br /> If` then insufficierd Buo an <br /> ( ) Y <br /> FACTOR: 1.2 1.57 ACCEPTABLE <br /> Required <br /> Fiber lass Holddown Straps <br /> _ Net Bo_uyancy reaction to be overcome by straps _ 12,589 _ <br /> Humber of Hoktdown straps used on tank:1-^- 5 iStrap Size:3/16"x 2"each <br /> Maximum Allowable Load associated with stra : 28,500 E pounds/Strap I <br /> Straps.combined strength to overcoming baoyancy: 142,500 ( pounds <br /> I <br /> SAFETY FA JACCEPTABLE <br /> ----- --- -----.-- Required <br /> Special Mote <br /> Deadman hoiddownsoverburden backfill and concrete coverall act together as a complete system. <br /> !fan ohne of these elements is not fully utilized-holddown skstem rvrra�/not function adegvate(y _ <br /> Disclaimer Statement--- I . i__ ��-- <br /> The�attached information is supplied to you for information purposes only. <br /> Therefore,Modem Welding Com any,their officers,directors nor subsidiaries there of accept a /no <br /> responsibility for the use of this information covered within.This information is advisory only and the use <br /> _--- - - _ ----- _. _._ _ ry _-__- <br /> af the material and methods is sole at the risk of the user. - r- �----- <br /> I 1 <br />