Determine the value of the section modulus, S, about the horizontal z axis for the section. Let bf = 16 in., d = 20 in., tw = 0.250 in., and tf = 0.750 in.

The beam is braced at A, B, and C. Determine the lateral-torsional-buckling modification factor, Cb, for the unbraced length AB. Let w = 5 kip/ft, LAB = 16 ft, and LBC = 7 ft.

A W24x68 made of A572 Grade 65 steel is subjected to a maximum bending moment of 530 kip-ft about its x-axis. Determine the maximum magnitude of bending stress in the beam.

Determine the nominal flexural strength, Mn, of a W12x40 for a simple span of 10 ft with continuous lateral support. Use Fy = 90 ksi and Cb = 1.0.

A W8x31 beam made from A36 steel would be classified as _______.

An unsymmetrical flexural member consists of a 3” × 20” top flange, a 3” × 12” bottom flange, and a 1” × 47” web. Determine the distance from the top of the shape to the horizontal plastic neutral axis.

An unsymmetrical flexural member consists of a 3” × 18” top flange, a 3” × 15” bottom flange, and a 1” × 56” web. Determine the distance from the top of the shape to the horizontal plastic neutral axis.

The beam is braced at A, B, and C. Determine the lateral-torsional-buckling modification factor, Cb, for the unbraced length AB. Let P = 115 kip, L1 = 13 ft, and L2 = 7 ft.

A tee shape made from A572 Grade 65 steel is fabricated from two plates of steel. The flange plate is 0.375 in. × 14 in., and the stem plate is 0.625 in. × 9 in. Determine whether the shape is compact, noncompact or slender.

A W24x68 made of A572 Grade 65 steel is subjected to a maximum bending moment of 480 kip-ft about its x-axis. Determine the maximum magnitude of bending stress in the beam.