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i <br /> Nov 09 05 11 : 04a M *chitects 92594 X581 p. 4 <br /> Buoyancy of Underground Tanks S, 9/1512005 <br /> Fiberglass Straps with Deadman Anchors <br /> Bold..Typed Items are Input Values" <br /> ._ _....- - ----- —_ . .._ _. _._____ - <br /> Underground Tank Descri tion Glasteel it �_— <br /> Tank Model: GS-13 _ <br /> Outer Tank Diameter(Inches): 115 — <br /> Tank Length(Inches), —_341 <br /> - <br /> Tank Capacity(3allons) 15332 <br /> ----_Tank Buoyancy:j 127,903 1 <br /> Primary Shell Thickness(Inches):', 0.25 — <br /> Secondary Shell Thickness(Inches):; 0 <br /> Accessories Weight Extra j 0 ; <br /> Calculated Tank Weight" 10,208 10,208 <br /> _ Sumps/Enclosures <br /> Quantity of Item 1 enclosures 2— — __— _ <br /> _ Item 1:"Diameter"(Inches): 42 <br /> — Item 1: "Height"(inches):l 84 OK <br /> Quantity of Item 2 enclosures <br /> Item 2 Diameter"(Inches):, <br /> Item 2 "Height"(inches):1 OK I <br /> Buoyancy contributed by enclosures' 1 8405 <br /> Net Tank Buoyancy:'_ 1 126,100 1 <br /> . _ .-_-...._— - <br /> __ _--F-- — <br /> Concrete Slab at Grade <br /> Concrete weig It/cubic foott 150 <br /> Surface Concrete Slab Thickness Inches:1 8 <br /> ---____ Weight of concrete Slab, — __21,929 -- <br /> Slab size:24">tank diameter,48">tank length) <br /> Burial and Water Table Depth Net saturated saturated soil weight to overcome b ancy 57.6 <br /> Saturated backfill backfill we M 1#cubic foo: 120 i <br /> Dry backfill weight!#cubic foot 100 ! 31{ 6 <br /> Tank Burial Depth,Top of tank to grade Inches): 84 <br /> --Elevation of water table,'0 inches"is flooded hotel 0 I <br /> Weight of Backfill directly over tankl 115,475 <br /> Overburden lost due to sump size and num 8143 i <br /> Net Overburden 107,331 <br /> Deadman Conf uration <br /> —_Deadman Anchor width Inches 12 I. OK <br /> Deadman Anchor height nches) 12 OK <br /> Deadman anchor Inches): 341 OK <br /> Deadman Contribution toward Overcoming Buoyan i 94,934 <br /> Total Weight Concrete,Overburden 8 Deadman contributions: <br /> ! 224,194 <br /> If=( )then insufficientBuoyancy Results 98,094 — <br /> SAFETY FACTOR: 1.2 1.72 ACCEPTABLE <br /> Required <br /> Fibe lass Hotddown Strapsi <br /> Net Bo�ncyreaction to be overcome by straps - 3,160 _ <br /> — Number of Holddown straps used on tank: — 5 'Strap Size:3/16'x 2"each <br /> Maximum Allowable Load associated with stns : 28,500 ands/sloe ' <br /> Straps combined strength to overcoming huoyan 142,500 i . .pounds } <br /> —._. __...I....._ <br /> ---- SAFETY FACTOR: 1.50 45.10 ACCEPTABLE <br /> --- ---- ------------ R aired <br /> S I Note: <br /> Deadman,holddowns,overburden backfill and concrete cover all act together as a complete system__--.... _.. <br /> Lan of these elements is not fully ubl¢ed,holddown system mar not function adequatel r� <br /> Disclaimer Statement — �— — <br /> The attached information is supplied to you for information purposes only. I <br /> Therefore,Modem Welding Comps ,their officersdirectors nor subsidiaries there of accept an /no <br /> responsibility for the use of th!a informatlon_covered within.This information is advisorgr o�and the use <br /> of the material and methods is solely at the risk of the _— <br /> _ — _ __— ^. I <br /> 1 <br />