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Flate Plate Moments

Flate Plate Moments

Flate Plate Moments

(OP)
ACI 318-05 Section 13.7.7.5: "Distribution of moments ... to column strips, beams, and middle strips as provided in 13.6.4, 13.6.5, and 13.6.6 shall be permitted if the requirement of 13.6.1.6 is satisfied."

Section 13.6.1.6: "For a panel with beams between supports on all sides, Eq (13-2) shall be satisfied ..."  

Equation (13-2) places limits on the stiffnesses of the beam/slab. For a flat plate with NO beams, Equation (13-2) ends up yielding 0 divided by 0.  

13.6.1.6 is silent regarding panels without beams. Is it the Code's intent that the distribuition coefficients in 13.6.4 do not apply to flat plates (w/o beams)?  If so, what distribution should be taken to the column and middle strips?

 

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