Three bars AB, AC, and AD are pinned together as shown in the figure. Initially, the assembly is stress free. Horizontal movement of the joint at A is prevented by a short horizontal strut AE. Calculate the stress in aluminum bar AC and steel bar AD. Also, find the force in the strut AE when the assembly is used to support the load W = 12.50 kips. For each steel bar, A = 0.4 in2 and E = 29 × 106 psi. For the aluminum bar, A = 0.8 in2 and E = 10 × 106 psi

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Members with compression and bending

Compression members are structural elements that carry compressive axial force. They are the vertical members of a building that support beams and their design, which is governed by buckling and strength. Columns are known as struct or compression members, which are subjected to compressive forces. These members provide stiffness to the building and avoid any imperfection regarding the transfer of axial load. For instance, webs in a truss, braces in a framed structure, tiers, and so on.