Question: A long slender column ABC is pinned at ends A and C and compressed by an axial force P (see figure). At the midpoint B,

A long slender column ABC is pinned at ends A and C and compressed by an axial force P (see figure). At the midpoint B, lateral support is provided to prevent deflection in the plane of the figure. The column is a steel wide-flange section (W 250 ( 67) with E = 200 GPa. The distance between lateral supports is L = 5.5 m.
Calculate the allowable load P using a factor of safety n = 2.4, taking into account the possibility of Euler buckling about either principal centroidal axis (i.e., axis 1-1 or axis 2-2).

L W250 67 Section X-X

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