A square wood column with side dimensions b (see figure) is constructed of a structural grade of

Question:

A square wood column with side dimensions b (see figure) is constructed of a structural grade of eastern white pine for which Fc = 8.0 MPa and E = 8.5 GPa. An axial force P = 100 kN acts on the column.
(a) If the dimension b = 120 mm, what is the maximum allowable length Lmax of the column?
(b) If the length L = 4.0 m, what is the minimum required dimension bmin?