Lateral Bracing

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ZEZO4

ZEZO
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Hi,

When the lateral bracing and the second order analysis need to be checked in the seismic steel design?

Thanks.

 
Always!
Second order analysis is always necessary as per AISC 360-10 C.1. However, You might neglect P-δ as illustrated in AISC 360-10 C.2.1.(2).

 

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