Question: 4 - 1 . Select the lightest W 1 2 section available to support working tensile loads of P D = 1 2 0 k

4-1. Select the lightest W12 section available to support working tensile loads of PD=120k and PW=288k. The member is to be 20ft long and is assumed to have two lines of holes for 3/4-in O? bolts in each flange. There will be at least three holes in each line 3 in on center. (Ans. W12\times 45 LRFD and ASD)
4 - 1 . Select the lightest W 1 2 section

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