Can an A992 steel WT12 x 31 column with an effective length of 16 feet in both directions support a dead load of 100 kips and a live load of 120 kips? Use LRFD.

A column is fabricated by welding a 5/8 x 18 plate to the left and right of a W14x61. Determine the moment of inertia about the y axis.

A column is fabricated by welding a 5/8 x 18 plate to the left and right of a W14x43. Determine the moment of inertia about the y axis.

A column is fabricated by bolting a 5/8 x 6 plate to the top and bottom of a W14x120. Determine the moment of inertia about the y axis.

A W14x82 made with A992 steel is pinned at both ends and braced in the weak direction as shown. Can it support a dead load of 200 kips and a live load of 240 kips? Use LRFD. Let L1 = 24.4 ft, L2 = 8.4 ft, and L3 = 16.0 ft.

Determine the effective length factor, Kx, for column FG of the frame, assuming that the frame is sidesway inhibited and that all of the assumptions on which the alignment charts were developed are met.Girders BF, CG and DH are W18 x 46 and have a length of L1 = 24 ft.Girders FJ, GK and HL are W21 x 50 and have a length of L2 = 36 ft.Columns AB, EF and IJ are W10 x 77 and have a length of L3 = 14 ft.Columns BC, FG and JK are W10 x 49 and have a length of L4 = 12 ft.Columns CD, GH and KL are W10 x 26 and have a length of L4 = 12 ft.

A column is fabricated by bolting a 1 x 6 plate to the top and bottom of a W14x82. Determine the moment of inertia about the x axis.

A W14x257 made with A992 steel is pinned at both ends and braced in the weak direction as shown. Determine the value of the controlling slenderness ratio Lc/r. Let L1 = 31 ft, L2 = 11 ft, and L3 = 20 ft.

Bending is about the x-axis of each member. Determine the value for G (that would be used for GA or GB in the alignment charts) at point F in the frame.Girders BF, CG and DH are W18 x 55 and have a length of L1 = 22 ft.Girders FJ, GK and HL are W21 x 55 and have a length of L2 = 28 ft.Columns AB, EF and IJ are W10 x 68 and have a length of L3 = 14 ft.Columns BC, FG and JK are W10 x 49 and have a length of L4 = 10 ft.Columns CD, GH and KL are W10 x 30 and have a length of L4 = 10 ft.

Which of the following slenderness ratios is the controlling value used in determining a column’s compressive strength?