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looking for this equation...

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DaveVikingPE

DaveVikingPE

Structural
Aug 9, 2001
1,008
Where in the ACI code (or elsewhere) do I find this equation:

required steel ratio = (.85fc/fy)(1-sqrt(1-(2Ru/.85fc)))?

 
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The derivation can be found (among other places) in Reinforced Concrete Design by Wang & Salmon.
 
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