The cross-sectional dimensions of a beam are shown. Assume bf=3.375 in., tf=tw=0.3125 in. and d=3 in. (a) If the bending stress at point K is 2050 psi (T), determine the internal bending moment Mz acting about the z centroidal axis of the beam. (b) Determine the bending stress σH at point H (positive if tension, negative if compression).

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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.