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Re: Weak axis moment frame K Value

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Anantha,
 
        You have to check both and be consistent.  You could, for instance, have Kx, Lx, and Rx all being different  respectively from Ky, Ly, and Ry.  You must calculate both Kx*Lx/Rx and Ky*Ly/Ry and use the value which gives the lowest structural capacity.
 
        Hope this is the answer to the question you were asking.
 
Regards,
 
H. Daryl Richardson
----- Original Message -----
Sent: Friday, April 06, 2007 11:22 AM
Subject: Weak axis moment frame K Value

Greetings,
 
I am peer reviewing a job which has moment frames framing into the column weak axis. I wanted to know if I could compute the effective length factor (K) based on the Iy. This would mean getting a lower K value and hence, a higher axial load capacity.

Does this make sense?
 
Thanks
Anantha


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ANANTHA NARAYAN, E.I.
Structural Engineer
Bliss and Nyitray Inc.
Miami, FL - 33134


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