Computer Study—comparison of approximate analysis with exact analysis. Consider the structures in Figures P13.21, respectively.

(a) Use approximate analysis to compute the reactions and draw moment diagram for the column AB and draw the approximate deflected shape of the frame.

(b) Determine truss bar forces. All truss joints are pinned.

(c) Compare the results with the exact analysis using a computer software. Truss member properties are A = 4 in.2 , columns A = 13.1 in.2 , I = 348 in.4 and E = 29,000 kips/in.2 for all members.

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10 kips B D E L M -pinned connections typical -pinned base typical F N 6 @ 5' = 30' G H P J 5 15'