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Deadman Anchors (cont.) <br />• At minimum burial depth of 36" (44" for 12' diameter <br />tanks), minimum deadman size is as follows (see table)* <br />Tank <br />Diameter <br />Minimum <br />Height <br />Width <br />4' <br />6" <br />6" <br />6' <br />12" <br />12" <br />8' <br />12" <br />12" <br />10' <br />12" <br />18" <br />12' <br />8" <br />36" <br />*A round cross section can be substituted if the diameter equals or exceeds <br />the deadman width. If tank is buried deeper than the minimum burial <br />depth, a smaller width deadman may be used. Contact the Fiberglas <br />Tank Installation Manager in Toledo for details at 419-248-7371. <br />Deadman Anchors — <br />Installation <br />• Lay deadmen along each <br />side of tank. <br />• Make sure they are parallel <br />to tank. <br />• Attach turnbuckle or wire <br />rope to rebar anchor point <br />(see Anchoring Hardware <br />section on this page) or, <br />• Put wire rope around <br />deadman and through <br />anchor strap. <br />• Triple clamp wire rope. <br />• Deadman is full length of <br />tank on each side. <br />• For tanks requiring 4 or <br />more anchor points per <br />deadman, two deadmen <br />sections of equal length may <br />be butted end to end. <br />• Make sure each deadman section has at least 2 anchor points. <br />• The tank must not overshadow the deadman anchor. <br />Deadman Anchors — Multiple Tank Installation <br />• Each tank requires two deadmen or, <br />• If one deadman is used for 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 <br />spacing between tanks. <br />Anchoring Hardware <br />All steel components should be protected from <br />corrosion. <br />Rebar Anchor Point — an anchor point can be fabricated <br />from rebar as follows: <br />Deadman or Concrete Slab <br />I� Span —>I <br />Minimum <br />Rebar Span <br />M6 Rebars <br />#6 <br />4-1/2" <br />Evenly Spaced <br />Smooth <br />4-1/2" <br />8' <br />Radius <br />8" <br />0 <br />0 <br />#10 <br />IF <br />0 <br />#10 <br />12-1/2" <br />0 0 0 <br />opo <br />Tank <br />Diameter <br />Minimum <br />Rebar Size <br />(1 strap/anchor point) <br />Minimum <br />Rebar Span <br />4' <br />#6 <br />4-1/2" <br />6' <br />#6 <br />4-1/2" <br />8' <br />#8 <br />8" <br />10' <br />#10 <br />12-1/2" <br />12' <br />#10 <br />12-1/2" <br />• Anchor points may also <br />be fabricated from steel <br />eyebolts with bottom <br />plates. Consult a <br />structural engineer for <br />other anchor point <br />methods. <br />Uplift Force <br />3.. _ <br />12 x 12 1 .-3/4"b <br />Deadman <br />or Concrete 1/4"L <br />Anchor Pad 9" <br />2 #6 Rebars <br />by 2'-0" Long <br />i1/2, Plate <br />End view <br />Side <br />Turnbuckles (drop -forged) — May be used in place of all or <br />a portion of wire rope described in this section. <br />Tank <br />Diameter <br />Minimum Turnbuckle Diameter (by type) <br />Hook Jaw Eye <br />4' <br />4' <br />3/4" 1/2" <br />1/2" <br />6' <br />3/4" 1/2" <br />1/2" <br />8' <br />1-1/4" 3/4" <br />3/4" <br />10' <br />1-1/4" 3/4" <br />3/4" <br />12' <br />1-1/4" 3/4" <br />3/4" <br />Wire Rope - use 6 x 19 <br />(improved plow steel) wire <br />rope. <br />DO NOT <br />• Use wire eyebolts <br />• Use bent steel eyebolts. <br />Tank <br />Diameter <br />Minimum <br />Wire Rope <br />Diameter <br />4' <br />3/8" <br />6' <br />3/8" <br />8' <br />1/2" <br />10' <br />1/2" <br />12' <br />1/2" <br />