A W12x79 of A573 Grade 60 (Fy=415 MPa) steel is used as a compression member. It is 8 m long, pinned at the top fixed at the bottom, and has additional support in the weak direction at mid-height. Properties of the section are as follows: A = 14,500 mm^2 Ix = 258.6 x 10^6 mm^4 Iy = 84.375 x 10^6 mm^4 Calculate the effective slenderness ratio with respect to strong axis buckling using theoretical value of k.

Steel Design (Activate Learning with these NEW titles from Engineering!)
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ISBN:9781337094740
Author:Segui, William T.
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Chapter5: Beams
Section: Chapter Questions
Problem 5.4.3P: Determine the smallest value of yield stress Fy, for which a W-, M-, or S-shape from Part 1 of the...
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A W12x79 of A573 Grade 60 (Fy=415 MPa) steel is used as a compression member. It is 8 m long, pinned at the top fixed at the bottom, and has additional support in the weak direction at mid-height. Properties of the section are as follows:

A = 14,500 mm^2

Ix = 258.6 x 10^6 mm^4

Iy = 84.375 x 10^6 mm^4

Calculate the effective slenderness ratio with respect to strong axis buckling using theoretical value of k.

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