Compute the ASD elastic critical buckling strength, Pe1, for the W14x74 made from ASTM A992 steel with L = 12 ft, P = 240 kip, M = 260 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 50% dead load and 50% live load. The frame analysis was performed consistent with the effective length method, so the flexural rigidity was unreduced.

Compute the value of Cm for a beam-column in single-curvature bending with a moment of 110 kip-ft on one end and a moment of 330 kip-ft on the other end.

Compute the value of Cm for a beam-column with a moment of 240 kip-ft at the top and a moment of 490 kip-ft at the bottom.

Which of the following is not a level of the spinal cord?

Compute the value of Cm for a beam-column with a moment of 420 kip-ft at the top and a moment of 220 kip-ft at the bottom.

Compute the LRFD elastic critical buckling strength, Pe1, for the W18x65 made from ASTM A992 steel with L = 14 ft, P = 530 kip, M = 250 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 30% dead load and 70% live load. The frame analysis was performed using the requirements for the approximate second-order analysis method meaning that a reduced stiffness was used.

Interaction formulas are limited to a maximum value of _____ in order to keep the required strength less than the available strength.

Compute the LRFD elastic critical buckling strength, Pe1, for the W8x58 made from ASTM A992 steel with L = 15 ft, P = 490 kip, M = 240 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 50% dead load and 50% live load. The frame analysis was performed using the requirements for the approximate second-order analysis method meaning that a reduced stiffness was used.

Determine Cb for the member if the moments at the top and bottom are 190 ft-kip and 410 ft-kip, respectively.

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.