Question: ( 3 0 pts ) A W 1 8 x 7 1 is used as a beam. Use F y = 6 5 ksi and

(30 pts) A W18x71 is used as a beam. Use Fy=65ksi and Cb=1.1 and determine the graph of
nominal flexural strength (Mn) and unbraced length (Lb). Compute the important points using the
equations in Chapter F of AISC specification.
( 3 0 pts ) A W 1 8 x 7 1 is used as a beam. Use

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