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Re: RE: "z" limit requirement

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The proposed revisions to ACI 318-95 (Concrete International - Nov. 1998) eliminates the Z factor and replaces it with a different formula that calculates the bar spacing directly.

  s = 540/fs-2.5*Sc  (I assume 540 divided by the quantity) not greater than 12(36/fs)

Sc = clear cover from nearest surface in tension to surface of flexural tension reinforcement.