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i <br /> 7. ANCHORING TAspacing between tanks must be equal to twice the width of a single <br /> ii deadman.One deadman may be used between two tanks if it is <br /> CAUTION:Xerxes recommends that every site be thoroughly doubled in width. Provide a separate anchor point for each <br /> 1 evaluated for the potential to trap water or otherwise subject the holddown strap. <br /> tank to a rise in the local water table.Xerxes recommends that ANCHOR SLAB: <br /> all tanks be anchored in installations in which water may enter An anchor slab is a reinforced concrete base.The total length of the <br /> the hole.Failure to anchor may damage the tank or surrounding slab is 12"greater than the overall length of the tank.The minimum <br /> i property. slab thickness is 8".The width of the slab depends on the tank <br /> i DEADMANANCHOR: diameter. Refer to Table 7l for specific dimensions. Refer to Table <br /> A deadman is a reinforced concrete beam with a total length 12 7-2 and Figure 7-2 for anchor point dimensions. Provide a separate <br /> a inches greater than the overall length of the tank.A deadman may anchor point for each holddown strap.When using a concrete base <br /> be fabricated in multiple sections as long as the total length is not slab,allow sufficient depth in the excavation for 12"of bedding <br /> decreased and each section contains at least two anchor points. material below the tank(Figure 7-3). <br /> The width and thickness depend on the tank diameter. Refer to <br /> TABLE 7_2 <br /> 111 Table 71 for specific dimensions. <br /> i ANCHORING DIMENSIONS <br /> ITANK <br /> LE ..E.. <br /> II!. DIAMETER A ,•B•• ••C" "U„ <br /> TANK DIAMETER DEADMAN DIMENSIONS SLAB WIDTH MIN. MAK. <br /> lit (FT.) (Wx 0)(IN.) (FT.) 4' 24" 18" 12" - 27" 1 30" $'-41/4" <br /> j 4 6"x 6" 6' 6' 35" 23" 13" 42" 1 48" 12'-1" <br /> 6 12"x 12" 9'6" 8' 43" 31" 15" 52" 58" 15'-1" <br /> I 8 12"x 12" 11' 10' 5T' 45" 15" 69" 75" 18'-83/4" <br /> li. <br /> 10 18"x 12" 13.5' 12' 58" 50" 23 87" <br /> 12 36"x 8" 15' _ <br /> =1 III POSITION STRAP CLIP <br /> = AT TANK TOP I II <br /> _ D' <br /> III III i4DEADMAN <br /> 1 = <br /> IF=IITYPICAL AI I CONFIGURAII -AIIIII- , SLAB••1z -III -I III <br /> FIGURE71 IIIII- <br /> TANK SHADOW LEE IIIA=IIIA -1III_I III=IIIA= III <br /> IIIA i <br /> FIGURE 7-2 <br /> 131 <br /> 'I = <br /> El <br /> X WIDTH <br /> WIDTH (SEE TABLE 7-1) •� <br /> ' <br /> FIGURE 7IA 1z" Tril <br /> ME <br /> Lay the deadmen in the excavation parallel to the tank and outside Itof the tank"shadow."(See Figure 71 and 71A).In multiple tank = <br /> installations,each tank will require two deadmen.The minimum FIGURE 7-3 <br />