A three-story steel column in a building supports roof and floor loads as shown in the figure. The story height H is 10.5 ft, the cross-sectional area A of the column is 15.5 in.2, and the modulus of elasticity E of the steel is 30 × 106 psi.
Calculate the strain energy U of the column assuming P1 = 40 k and P2 = P3 = 60 k.

Transcribed Image Text:

Pl P1