Compute the LRFD elastic critical buckling strength, Pe1, for the W10x88 made from ASTM A992 steel with L = 13 ft, P = 550 kip, M = 270 kip-ft, and Kx = Ky = 1.0. Bending is about the x axis. The member is part of a braced frame, and the given service loads are 40% dead load and 60% live load. The frame analysis was performed using the requirements for the approximate second-order analysis method meaning that a reduced stiffness was used.

Second-order methods are iterative analyses that account for displaced geometries.

Using ASD, determine whether the following member satisfies the appropriate AISC interaction equation. Do not consider moment amplification. The loads are 50% dead and 50% live load. Bending is about the x-axis.Given:    W14x193, A992    660 kip axial compression    600 ft-kip bending moment    L = 19 ft    pin-pin connected    laterally braced at ends    Kx = Ky = 1

How long should you try to deliver a calf before admitting defeat and calling a veterinarian?

A member subjected to a clockwise moment on both ends will experience _______.

Using ASD, determine the value of the AISC interaction equation for a W12x106 made from ASTM A992. Let L = 16 ft, Kx = Ky = 1.0, and Cb = 1.0. The factored loads are Pnt = 160 kip, Mnt = 140 kip-ft, The member is part of a braced frame, bending is about the x axis, and the ASD moment amplification factor has been determined to be B1 = 1.037.

Determine Cb for the member if the moments at the top and bottom are 240 ft-kip and 520 ft-kip, respectively.

Ordinary structural analysis methods that do not take the displaced geometry into account are called _______ methods.

Using ASD, determine the value of the AISC interaction equation for a W18x65 made from ASTM A992. Let L = 16 ft, Kx = Ky = 1.0, and Cb = 1.0. The factored loads are Pnt = 120 kip, Mnt = 150 kip-ft, The member is part of a braced frame, bending is about the x axis, and the ASD moment amplification factor has been determined to be B1 = 1.024.

Compute the LRFD elastic critical buckling strength, Pe1, for the W14x74 made from ASTM A992 steel with L = 15 ft, P = 260 kip, M = 200 kip-ft, and Kx = Ky = 1.0. Bending is about the x axis. The member is part of a braced frame, and the given service loads are 40% dead load and 60% live load. The frame analysis was performed consistent with the effective length method, so the flexural rigidity was unreduced.