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Determine the value of plastic section modulus, Z, about the horizontal z axis for the section. Let bf = 12 in., d = 18 in., tw = 0.250 in., and tf = 0.750 in.

An unsymmetrical flexural member consists of a 3” × 20” top flange, a 3” × 13” bottom flange, and a 1” × 40” web. Determine the distance from the top of the shape to the horizontal plastic neutral axis.

A tee shape made from A913 Grade 65 steel is fabricated from two plates of steel. The flange plate is 0.750 in. × 16 in., and the stem plate is 0.625 in. × 7 in. Determine whether the shape is compact, noncompact or slender.

For a W-shape beam with a moment of inertia of 445 in.4 and a depth of 18 in., determine its yield moment, My. Assume the steel is A913 Grade 70.

Determine the value of the section modulus, S, about the horizontal z axis for the section. Let bf = 11 in., d = 18 in., tw = 0.250 in., and tf = 0.750 in.

A tee shape made from A913 Grade 70 steel is fabricated from two plates of steel. The flange plate is 0.750 in. × 22 in., and the stem plate is 0.500 in. × 7 in. Determine whether the shape is compact, noncompact or slender.

A tee shape made from A572 Grade 60 steel is fabricated from two plates of steel. The flange plate is 0.500 in. × 18 in., and the stem plate is 0.625 in. × 7 in. Determine whether the shape is compact, noncompact or slender.

The beam is braced at A, B, and C. Determine the lateral-torsional-buckling modification factor, Cb, for the unbraced length AB. Let P = 100 kip, L1 = 16 ft, and L2 = 7 ft.

For a W-shape beam with a moment of inertia of 660 in.4 and a depth of 12 in., determine its yield moment, My. Assume the steel is A572 Grade 65.

Determine the nominal flexural strength, Mn, of a W12x40 for a simple span of 22 ft with continuous lateral support. Use Fy = 90 ksi and Cb = 1.0.