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Re: strong axis bending of a bar

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>From my "Structural Stability" text by Chen and Lui, I see that the critical moment capacity is;


Apply safety factors or load and resistance factors as appropriate.


Curt La Count
Jacobs Engineering
Portland, OR

I think this is an easy one but I haven't found it yet.  I have written in my AISC 9th edition that the allowable bending stress of a plate bent about its strong axis is Fb = 10,000/ (Ld/(t cubed)) <.66Fy.  Anybody know where I got this?  Is it correct?  Is it in the AISC spec?  I know that .75Fy is good for the weak axis bending.  Thanks for your help.