Question: Use LRFD approach. A W 1 8 X 6 0 is used for a beam with an unbraced length of 2 5 f t .

Use LRFD approach. A W18X60 is used for a beam with an unbraced length of 25ft. Using Fy=50ksi and Cb=1, compute the nominal flexural strength. Use the following steps:
a. Find Lp and Lr. Check which limit state governs - no LTB, plastic LTB, or elastic LTB
b. Find Mn and bMn.
Use LRFD approach. A W 1 8 X 6 0 is used for a

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