PROBLEM SET Situation 1 The rigid bar AB, attached to two vertical rods as shown in the figure, is horizontal before the load is applied. If the load P=50 KN. Compute the vertical movement under the load. Aluminum E-70 GPa Steel L-4m E-200 GPa A=500 mm L-3m A-300 mm 2 m 3 m

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A: Take moment about A:∑ MA=0RB4×b-P3×b-12w2b23×2b=0RB=5×3+0.762×43×154RB=7.56KN

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.