Stiffened Cold-Formed Elements Subject to Local Buckling

stiffened element in a cold-formed steel member loaded as a beam. However, in
beam strength determinations requiring use of the section modulus of the cross
section, 1.67Æ’ is the stress to be used in Eq. (8.9) to calculate the effective width
of the stiffened element and provide a margin of safety.
In determination of the safe loads for a cold-formed steel section used as a
column, effective width for a stiffened element must be determined for a nominal
buckling stress, Fn, to ensure an adequate margin of safety.

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