INSTALL_1999 - Laserfiche WebLink

Home Browse Search

11/17/98 17:01 TITANPUBBER 444 • 1,10.041 P009/010 TOP VIEW r z.• ,z..l ,a- ,r ,r a• oe. Car01110`4 )6 9 YNeFFl[ / u NUM Numbers in traoels I 1 51ISBLE SOIL 12 rarer m l7 tanks. FIGURE 4-3 RM 45 St11BLE SOIL fbNOtTIONS Where shoring is not required to frlajnWn a vertical wall from top Tanks not subjected to traffic bads must have a minimum cover to bottom of the excavation,and the soil is stable,the minimum depth of 24[48]inches of baddll,or 12[36]inches backfill plus spacing between the sidewa)l or endcap of the tank and side of 4 inches Of reinforced concrete or 6 inches of asphalt. excavation must he 18 inches[24 Indies for 12'tanksj.If more than one tank is to be installed in the Sarre hole,there must be at least 18 inches between the tanks. i TOPAEW n ENT wr liz ,r x• raa,rlos tl iNAFFIC NM Numbers m hratlQ!s[I referm 12Wks. 12 UPISfA91.f SOR FIGURE 4-0 FIGURE 4-6 UNSTABLE SOIL CONDITKWS If the sail has less than 750 IbsJsq.It.cohesion as calculated from Tanks in high waterareas not subjected to traffic loads must have a an uncionfi ed compression test:or in soils having an ultimate minimum of 36[481 inches at backfill covering. bearing Capacity of less than 3500 IbsJsq R;or where soil will not WARNING:In a non traffic installation,insure that the areas above mannan"a verael wait,the ezavaban must allow a minimum the tanks will never be subject to traffic loads. SPane equal to 12 the diameter of the tank between the side and MM'These dep7,s of carr are MINIMUMS in as cam endcap of the tank and the exaavrdtien Wall.The spacing between NUMAsahab and tdhtrele pads must ed,vd a mmimWn of 12{rChOseya hd adonem tanks,18 inches remaire the same. tank in all directors. WARNING:If the soil is extremely will or Inherently unstable. NOTE:Maximum burial depth e 7 reef m coat 04r top of tanks. e.g.Peat,Qrid(sand.very soft or expensive day,etc.,Xerxes NefE unattached nuutway rser(d proses)must not transtttt Nod hum the recammends that the tank owner sod(the advice of a local concretesieb m the tank Throe must be a minimum 6 inm spam tw4wm,era houndabmi pfufessional engineer. bottom of the user wW 7e tap of the fink. FILTIER FABRIC TANK SPACING The tank owner or his technical representative is responsible for Note These am minimum spaorgs and must be gxnaz ad as needed m detrmdning whether filter fabric or an albrnate tittering technique a=rm,otde deadner,Or amiv slabs.Peter to Sector 7 m tam,ar,". is appropriate for a specific installation.After fabric allows the t hada rvftoard aaaance to auow de aeadnen m be sp ansi0e of hre passage of water but prevents the migration and mihdrhg of nature sol and badddl material.It preserves the integrity of the backfill e AOM which SL00"the tank Poyettlylerle film is not considered an effective material to prevent migration of pea gam,mtshed stone and native soil;it may tear or degrade while in Service. Xerxes recommends that litter fable be used when the tank may UC inataJW h,: •areas with frequerhtly charging ground water conditions or areas subject to tidal fluctuations, unstable soils Such as bog,swamp,landfill or mud, water conditions with silty soil.