Question: A square wood column with side dimensions b (see figure) is constructed of a structural grade of Douglas fir for which Fc = 1,700 psi

A square wood column with side dimensions b (see figure) is constructed of a structural grade of Douglas fir for which Fc = 1,700 psi and E = 1,400,000 psi. An axial force P = 40 k acts on the column.
(a) If the dimension b = 55 in., what is the maximum allowable length Lmax of the column?
(b) If the length L = 11 ft, what is the minimum required dimension bmin?

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