Laserfiche WebLink
Deadman Anchors (cont'd) <br />• At minimum burial depth from chart on page 6, mini- <br />mum 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 />1 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 the <br />deadman width. If tank is buried deeper than the minimum burial depth. a smaller <br />width deadman may be used. Contact Tank Technical Support for details. <br />Deadman Anchors - Installation <br />• Lay deadmen along <br />each side of tank. Deadman <br />• Make sure they are is full length <br />of tank on <br />parallel to tank. each side <br />• Attach turnbuckle or <br />wire rope to rebar an- <br />chor point (see An- <br />choring Hardware <br />Section) or, <br />• Put wire rope around <br />deadman and through <br />anchor strap. <br />• Triple clamp wire <br />rope. <br />• Deadman is full length Tank <br />of tank on each side. overshadow <br />• For tanks requiring 4 <br />or more anchor points <br />per deadman, two <br />deadmen sections of <br />equal length may be <br />butted end to end. <br />• Make sure each deadman section has at least 2 anchor <br />points. <br />• The tank must not overshadow the deadman anchor. <br />Deadman Anchors - Multiple Tank Installation <br />• Each tank requires two deadman 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 spac- <br />ing between tanks (exception 10', 12' tanks). <br />8 <br />Anchoring Hardware <br />All steel components should be protected from corrosion. <br />Rebar Anchor Point - an anchor point can be fabricated <br />from rebar as follows: <br />Deadman or Concrete Slab <br />16 Rebars <br />Evenly Spaced <br />Tank <br />Minimum <br />Rebar Size <br />Rebar* <br />Diameter <br />(I strap/anchor point) <br />Span <br />4' <br />#6 <br />4 ''/z" <br />6' <br />#6 <br />4 ''/2,. <br />8' <br />#8 <br />6" <br />10' <br />#10 <br />7'/z" <br />12' <br />#10 <br />7 ''/2" <br />*,Vote: Wider or narrower <br />span will weaken anchor <br />"0•"F— <br />below required strength. <br />12.12 <br />• Anchor points may <br />C N 1,.-. <br />also be fabricated <br />from steel eyebolts <br />_., J <br />with bottom plates. <br />TP— Er4Y— <br />Consult a structural <br />engineer for other an- <br />chor point methods. <br />' <br />Turnbuckles (drop -forged) - May be used in place of all <br />or 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 />3/4" <br />1/2" <br />1/2" <br />6' <br />3/4" <br />I/2" <br />1/2" <br />8' <br />1-1/4" <br />3/4" <br />3/4" <br />10' <br />1-1/4" <br />3/4" <br />3/4" <br />12' <br />l-1/4" <br />3/4" <br />3/4" <br />Wire Rope - use 6 x 19 (improved plow steel) wire 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 />41 <br />3/8" <br />6' <br />3/8" <br />8' <br />1/2" <br />10' <br />l/2" <br />12' <br />l/2" <br />