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Re: Lateral Brace Deflection

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There is a short cut to determining the final deflection, given the
initial.  In a vertical column, where the deflection diagram is similar
to moment diagram,  define D(f) as the final deflection, D(i) as the
initial deflection, M(l) as the lateral moment and P as the column load.

Given the initial deflection the final deflection will be:

D(f) = D(i)/(1 - D(i)P/M(l))

I have used this equation to check my geometric non-linear frame program
for the analysis of an arch, and it is explained on my web site:


Go to the ?Analysis Examples? link at the bottom of the first page and
then to the arch example.. If you ned help, send me an email.

Milo Ketcuum

Milo Ketchum