Effective lengths of column.

[GS1978]

I am new member to this forum.I have question related to effective length of column in appendix F CAN/CSA S16-01.For sway frame case e & f value of k is 2.i was designing a portal frame of a industrial building, what should i use it.is it k = 2 / k =1.Thanks in advance.

 

[asixth]

Lex of 2 in the portal direction and Ley of 1 in the secondary direction if the building is braced in that direction. Fly bracing or other bracing can reduce the effective length.

 

[a7x1984]

asixth is correct. you need to check lateral restraint in the direction both both axis'

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