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DEADMAN ANCHORS - MULTIPLE TANK <br />INSTALLATION <br />♦ Each tank requires its own deadman on both sides OR, if <br />one deadman is used between adjacent tanks, it must be <br />doubled in width. <br />♦ A separate anchor point must be provided for each strap. <br />♦ Multiple tank installations require 24" minimum spac- <br />ing between tanks (exception 10' tanks require 36" <br />spacing, 12' tanks require 72" spacing). <br />ANCHORING HARDWARE <br />All steel components should be protected from <br />corrosion. <br />REBAR ANCHOR POINT <br />An anchor point can be fabricated from rebar as follows: <br />FIGURE 15 <br />Deadman or Concrete Slab <br />#6 Rebars <br />Evenly Spaced <br />r- <br />•a <br />• v,y <br />Smooth <br />Radius <br />Span 1 4" Min <br />NAVAAW". AIR <br />�QQ7"P. _—W&F.=,,,ter.=����_ <br />Tank <br />Minimum <br />ReBar* <br />Diameter <br />ReBar Size <br />Span <br />Ultimate <br />(1 strap/anchor point) <br />Dia. <br />4' <br />#6 <br />4 112" <br />6' <br />#6 <br />4112" <br />8' <br />#8 <br />6" <br />10' <br />#10** <br />101' <br />12' <br />#10** <br />10" <br />*Note: Wider or narrower span (see figure 15) will weaken <br />anchor below required strength,. <br />**314" turnbuckles require a wire rope loop or shackle <br />between turnbuckle and rebar anchor point because #10 <br />rebar will not fit into 314" turnbuckle. <br />♦ Anchor points may also be fabricated from steel eye- <br />bolts with bottom plates. Consult a structural engineer <br />far other anchor point methods (see figure 16). <br />FIGURE 16 <br />12" x 12" Deadman or Concrete Anchor Pad <br />` Uplift <br />_ Force <br />114" V1bid <br />g" 246 Rebars <br />by 24" long <br />End View <br />12 <br />112° •" <br />Plate <br />Side Yew <br />RNBUCKLES (DROP -FORGED, GALVANIZED) <br />May be used in place of all or a portion of wire rope <br />described in this section. <br />TURNBUCKLES <br />Tank. <br />Minimum Turnbuckle Diameter (by type) <br />Minimum <br />Tank <br />Wire Rope <br />Ultimate <br />Minimum <br />Dia. <br />Hook <br />Jaw <br />Eye <br />Working <br />6' <br />318" <br />13,120 lbs. <br />8' <br />Load Limit* <br />4' <br />112" <br />318" <br />318" <br />12001 bs <br />6 <br />314" <br />112" <br />112" <br />22001 bs <br />9 <br />1-114" <br />314" <br />314" <br />5200 lbs <br />10' <br />1-114" <br />314" <br />314" <br />5200 lbs <br />12' <br />1-114" <br />314" <br />1 314" <br />1 5200 lbs <br />*ultimate load should be 5 times working load limit <br />WIRE ROPE <br />A• <br />♦ Use 6 x 19 (improved plow steel) wire rope. Always <br />triple clamp wire rope. (Source: Wire Rope Technical <br />Board (WRTB) recommendations) <br />DO NOT <br />♦ Usewireeyebolts. <br />♦ Use bent steel evebnits. <br />WIRE ROPE <br />Minimum <br />Minimum <br />Tank <br />Wire Rope <br />Ultimate <br />Diameter <br />Diameter <br />Strength <br />4' <br />318" <br />13,120 lbs. <br />6' <br />318" <br />13,120 lbs. <br />8' <br />112" <br />23,000 lbs. <br />10' <br />112" <br />23,000 lbs. <br />12' <br />1 112" <br />1 23,000 lbs. <br />OPTIONAL TOP CABLE CLAMP METHOD <br />A method is available to use wire rope clamped at the top <br />of the tank. Contact Tank Technical Support for instruc- <br />tions. <br />OPTIONAL MAN OUT OF THE HOLE METHOD <br />A method is available to use FRP straps with a top mounted <br />tensioning assembly which allow for anchoring without the <br />need for a person to enter the excavation. Contact Tank <br />Technical Support for instructions. <br />