A rigid steel plate is supported by three posts of high-strength concrete each having an effective cross-sectional area A =40000 mm2 and length L = 2 m. Before the load P is applied, the middle post is shorter than the others by an amount s = 1.0 mm.
Determine the maximum allowable load Pallow if the allowable compressive stress in the concrete is σallow = 18 MPa. (Use E = 30 GPa for concrete.)
The Attempt at a Solution
Working aswell as diagram are shown in the pdf attached. Just looking for feedback on how I completed the question as it just seemed a little to easy for an assignment question?? cheers
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