Question

6. The figure below shows the floor framing plan for an office building. The roof has the same framing plan as the floor. Select a W12 section for Column C1 in the first floor and assume the same column will be used for Column C2 in the second floor. Floor loads (applied on the 2 floor; dead load of 200 psf and live load of 300 psf Roof loads (applied on the roof: dead load of 100 psf and roof live load of 50 psf -Use LRFD design method. - Use load combination #2 (1.2D+1.61+0.5L.) for this design, ignore the live load reduction - Select a lightest W12 section that satisfies the required load, P - Assume K, -1.0 first for selecting a W12 column. - Must use the alignment chart to determine K, after a column is selected Use ASTM A992 steel. - B Column CI Roof T F 18" C2 18 C2 W18X86 dfloor C1 18' 30 30 50' Section A-A Section B-B

Answer 1

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