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An engineer analyzes an unbraced frame and determines the sum of the required load capacities for all the columns in the frame is 255 kips (unfactored) while the total elastic buckling strength of the same frame is 4,847 kips. From these values, what is the LRFD amplification factor for sidesway moments of the frame?

An example of beam-columns can sometimes be found in roof trusses when purlins are placed at the joints.

An unbraced beam-column with no moment frames has an Euler buckling strength of 1,771 kips with a story shear of 4.78 kips. What is the drift index for the column?

Many isolated one-story columns can be realistically treated as _______.

An engineer analyzes an unbraced frame and determines the sum of the required load capacities for all the columns in the frame is 439 kips (unfactored) while the total elastic buckling strength of the same frame is 3,525 kips. From these values, what is the ASD amplification factor for sidesway moments of the frame?

Most beams and columns are subjected to some degree of both bending and axial load.

An engineer analyzes an unbraced frame and determines the sum of the required load capacities for all the columns in the frame is 336 kips (unfactored) while the total elastic buckling strength of the same frame is 2,142 kips. From these values, what is the ASD amplification factor for sidesway moments of the frame?

An unbraced beam-column with no moment frames has an Euler buckling strength of 2,158 kips with a story shear of 3.54 kips. What is the drift index for the column?

The beam-column of A992 steel is part of a braced frame with L = 15 ft, Pu = 320 kip, Mux = 125 kip-ft. A second-order analysis was performed with factored loads and reduced member stiffnesses to obtain the moments and axial force. Bending is about the strong axis. Considering only the following shapes and values obtained from the AISC procedure for ASD, select the lightest acceptable shape. Let Kx = 1.0, Ky = 1.0, and Cb = 1.0.ShapeValue of AISC interaction equationW12x581.496W12x721.092W12x790.990W12x870.892W12x960.802 

Drift index is the ratio of the story drift to the story width.