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Nov 07 05 02: 31p M I 0 chitects 9259431581 p. 2 <br /> Buoyancy of Underground Tanks 9/1512005 <br /> Fiberglass Straps with.Deadman Anchors ( l J <br /> „Boca Typed items are Input Values" __-__–_..___----.------_- _._.__—___--.-----------. _–__-_-- <br /> Underground Tank Desari_p_tion�Glesteel II <br /> —_-- Tan_k Model: GS-13 <br /> -- - Outer Tank Diameter Inches 115 _ <br /> _Tank <br /> -_.---.-----_____. an Capacity Gallons 15332 <br /> "— Tank Banc :; 127,903 _ <br /> -- --- Primary Shell Thickness Inches: 0.25 _ <br /> ---_ -._Secondary Shell Thickness(inches _..--- _-.-.----._--------------- <br /> Accessories Weight Extra 0 <br /> Calculated Tank Wei ht 10,208 1 _10,-208 <br /> Sumps Enclosures ------- <br /> Quantity of Item 1 enclosures) 2 <br /> Item 1:"Diameter" inches: 42 _ <br /> -- _ <br /> Iteml; "Height"(Inches 84 OK — - <br /> ----- —Quantity of Item 2 enclosures <br /> —— <br /> Item 2:"Diameter"(Inches): __--__._ <br /> - ---_...--------------------------•---------_----- -} --- ----- <br /> Item 2: "Height" inches OK — <br /> Buoyancy contributed by enclosures 8405 <br /> ---- - -- <br /> Net Tank Buoyancy, <br /> Concrete Slab at Grade <br /> Concrete /cubic foot 150 <br /> Surface Concrete Slab Thickness(inches); 8 <br /> -— - Weight of concrete Slab -21,929 <br /> (Slab size:24">tank diameter,48">tank len <br /> Burial and Water Table <br /> - <br /> Net saturatedPt <br /> soil u ht backfill erc e.buoyancy__-,.� ------57.8 - - ------- <br /> — ght/#cubic fo <br /> Saturated o 420 _ <br /> ___p7.backfiu weight 1#cubic foot, 100 ---_.___.--- <br /> _Tank Burial Depth, of tank to grade Inches 84 _ _ <br /> —Elevation of water tab[We-y"0 inches"is flooded hole 0 _— s <br /> - — <br /> —Weight of Backfill directly over tank 116,475 <br /> _-- Overburden lost due to sump size and numbe. 8143 <br /> Net Overburden ! 107,331 _ <br /> Deadman Configuration <br /> Deadman Anchor width inches? 12 OK <br /> -— _---------------------_ - - - - -_ ------- .. <br /> Deadman Anchor height(inches) 12 OK <br /> _ Deadman anchor IeEVh(Inches)*1 341 _ OK <br /> Deadm_an Contribution toward Overcoming Buo anc : T 94,934 <br /> TotaE Weight Concrete,Overburden&Deadman contributions: _— 224,194 <br /> - <br /> ------- ------- - _ _ -----es - <br /> IT=( )then insufficient Buoyancy ie its 19$,094 <br /> SAFETY FACTOR: 1.2 1.72 ACCEPTABLE <br /> Required <br /> _Fiberglass Holddown Straps- ---- y —��- <br /> Net B_o_uyancy reaction to be overcome by straps 3,160 -- —------------ <br /> -^ Number of Woiddown stra s used on tank- _5 StrapSize:3116"x Z each _ <br /> Maximum Allowable Load associated with stra : 28,500 pounds/strapl <br /> Straps combined stren Tto overcoming buoyan- . 142,500 pounds <br /> SAFETY FACTOR: 1.50 45.10 ACCEPTABLE <br /> Re uired <br /> Deadman,hoiddowns,overburden backfill and concrete coverall act together as a complete! stem. <br /> if same of these elements is not fully utilized,hotddown system may not function adequately_ _ <br /> Disclaimer Statement <br /> The attached information is supplied to you for inforrnation_purposes oniy <br /> Therefore,Modern Weliin�Lny,their officers directors nor subsidiaries there of accept any/no _ <br /> responslbil!V for the use of this Information covered within This information is advisary only and the use <br /> of the material and methods is solely at the risk of the user. <br /> --------------- <br /> - <br /> 1 <br />