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Design the column under the influence of axial force, the properties of which are given in the figure below, using the AISC 360-16.

 

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Solution:

Local Buckling

a) For flange:

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body--uriencoded--$$ \normalsize b/(2*t_f)≤0.56*\sqrt%7B(E/F_y)%7D$$

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body--uriencoded--$$ \normalsize 400/13.5=29.63≤1.49*\sqrt%7B(200000/355)%7D=35.28$$

Flexural Buckling

According to article 6.4.3(a) of the regulation, K= 1.0 is taken.

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