Select the lightest WT4 shape to be used as a 20 ft long tension member to resist the following service loads: dead load, D = 20 k, live load, L = 35 k, snow load, S = 25 k, and earthquake, E = 50 k. The connection is two lines of bolts through the flange with three 3/4-in Ø bolts in each line spaced at 3 in on center. Use A992 Grade 50 steel. Neglect block shear.

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Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.