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A W14 × 74 of A992 steel, 16 feet long, is used as a column in an unbraced frame.


A W14 × 74 of A992 steel, 16 feet long, is used as a column in an unbraced frame. The axial load and end moments obtained from a first-order analysis of the gravity loads (dead load and live load) are shown in Figure P6.7-2a. The frame is symmetric, and the gravity loads are symmetrically placed. Figure P6.7-2b shows the wind load effects obtained from a first-order analysis. All loads and moments are based on service loads, and all bend-ing moments are about the strong axis. The effective length factors are Kx = 0.85 for the braced case, Kx = 1.2 for the unbraced case, and Ky = 1.0. Determine whether this member is in compliance with the AISC Specification. 


a. Use LRFD. 

b. Use ASD. 


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engineering   Civil-Engineering   
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