Question

A 12 ft long W12x106 (A992) beam-column is in a braced frame,
supporting the following service loads and end moments:
P_{D} = 90 kip; P_{L} = 130 kip; M_{x,D} =
75 kip-ft; M_{x,L} = 125 kip-ft; M_{y,D} = 25
kip-ft; and M_{y,L} = 40 kip-ft; where the moments are due
to transverse loading. Assume K = 1.0 (TYP) and Cb = 1.0,
investigate if the member is satisfactory as per the 2016 AISC
LRFD.

Answer #1

A W14x500, A992 42 ft column in a braced frame with a
compressive dead load of 90 kips and a live load of 270 kips.
Maintaining a live load to dead load ratio of 3, determine the
maximum live and dead load second-order moments that can be applied
about the strong axis on the upper end when the lower end is pinned
by (a) LRFD and (b) ASD [8.14-5]

A 14ft pin-ended column in a braced frame must carry a
compressive dead load of 65 kips and live load of 130 kips, along
with a uniformly distributed transverse dead load of 0.5 kips/ft
and live load of 2.5 kips/ft. Will a W12x58, ASTM A992 member be
adequate if the transverse load is applied to put bending about the
strong-axis? LRFD.

determine the adequacy of a 12-ft long W12x40 column in a braced
frame to resist a factored axial load of 120 kips and factored
moments of 125ft-kips and 55ft-kops about the x and y axis,
redpectively. The column is assumed to be painted at both ends. Use
ASTM A992 steel.

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