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TANK DIAMETER <br />(FT) <br />DEADMAN DIMENSIONS <br />(W x D) (IN.) <br />rWSLAB WIDTH <br />( (FT.) <br />4 <br />6" x 6" <br />6' <br />6 <br />12"x12~ <br />9.5' <br />8 <br />I 12" x 12" <br />11' <br />10 <br />i 18"x 12" <br />13.5 <br />12 <br />36"x 8" ( <br />15 <br />FIGO 7-1A <br />Lay the deadmen in the excavation parallel to the tank and <br />outside of the tank "shadow.' (See Figure 7-1 and 7-1 A). in <br />multiple tank installations, each tank will require two deadmen. <br />The minimum spacing between tanks must be equal to twice the <br />width of a single deadman. One deadman may be used between <br />two :arks if it is doubled in width. Provide a separate anchor point <br />for each holddown strap. <br />An ancnnor slab is a reinforced concrete base. The total length of <br />the scab must be at least the same as the tank. The minimum slab <br />thickness is 8 inches. The width of the slab deDends on the tank <br />diameter. Refer to Table 7 1 for specific dimensions. Refer ,o Table <br />7-2 ana Figure 7-2 `or anchor oohnt dimensions. ?mvide a seoarate <br />anchor point for each holddown strap. When using a concrete oase <br />slab.. slew sufficient deoth in the excavation for 12 incites of <br />bedcing material oelow the tank ,'Figure -3). <br />TANK <br />DUMMI-jr <br />I <br />ANCHORING DIMENSIONS <br />"B" I .C"L <br />"E" <br />1 MIN. i MAX. <br />.,O„ <br />I <br />4' <br />24" <br />18" <br />12" <br />1 27" 30" 1 8'- 41/4" <br />6' <br />35" <br />23" <br />13" 1 <br />42" 148" j 12'-1" <br />8' <br />43" <br />31" j <br />15" <br />52" 158" 15'-1" <br />10' <br />ST' ( <br />45- I <br />15" j 69" 75" I 18'- 83/4" <br />12' <br />58" <br />50" f <br />23" 187" <br />1 93.11 22'-63/4-1 <br />FIGURE 7-2 <br />FIGURE 7-3 <br />Xerxes FRP straps must be used when a tank is to be anchored. <br />I he location of holddown straps for each tank is marked on the <br />tank by the arrow (><) symbol. Complete data for holddown <br />straps are given in Table 7-2 and Fgure 7-2. <br />1 ./'?\, CAUTION: <br />P% the straits only in the iocations designated by the arrow <br />symool (x). <br />To evenly distribute buoyancy loads. igmen all holddown straps <br />uniformly until they are snug over -he ribs but cause no deflection <br />of the tank. Maxe an intermediate measurement of the tank <br />diameter AFTER the strapsnave been installed and tightened. <br />