Return to index: [Subject] [Thread] [Date] [Author]

RE: tube steel braces

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Title: RE: tube steel braces

>Does this b/t requirement also apply to horizontal
>steel bracing (acting as a diaphragm)members?

The b/t ratio in the AISC Seismic Provisions applies when the element is expected to provide the ductility (inelastic deformations) that will dissipate the energy induced by the earthquake. In a braced frame structure, this is usually the vertical bracing. The remaining elements of the framing are normally designed to ride along, remaining essentially elastic as those ductile elements deform.