Does bracing requirement change with end conditions?
Does bracing requirement change with end conditions?
(OP)
I have a cantiliver beam loaded at the end. According to AISC Allowable Steel Design, (Lb < Lu). My question is, is the effective unbraced length of a cantilever beam double the actual unbraced length.
I would assume that its ability to twist is greater than if it was a pin-support of the same length subject to the same load.
I would assume that its ability to twist is greater than if it was a pin-support of the same length subject to the same load.





RE: Does bracing requirement change with end conditions?
Cantilever columns are a different story.
RE: Does bracing requirement change with end conditions?
- the actual length, for load height position at the shear centre
- twice the actual length, for load height position at the top flange
This is to account for the "de-stabilising" effect a load positioned at the top flange, which will increase the twist and lateral deflection.
RE: Does bracing requirement change with end conditions?