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reinforcing bar positioner requirement

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inspjerry

inspjerry

Structural
Joined
Jan 26, 2005
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I keep hearing reinforcing bar positioners for masonry mentioned in the ACI 350, but cannot find them anywhere,and I am unable to find any refrence to them in the new 2003 IBC. Anyone tell me where the requirement is?
 
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ACI 530.1 Section 3.4 states that rebar shall be secured as to "prevent displacement beyond the tolerances allowed". The corresponding commentary section shows some typical rebar positioners. I don't see where a spacing requirement is given, but we specify a maximum spacing of 200 bar diameters.
 
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Yes, but the new 2003 IBC states somewhere 112 bar diameters.
 
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