A wood post column of rectangular cross section (see figure) is constructed of 4 in. ( 8 in. construction grade, western hemlock lumber (Fc = 1,000 psi, E = 1,300,000 psi). The net cross-sectional dimensions of the column are b = 3.5 in. and h = 7.25 in. (see Appendix F).
Determine the allowable axial load Pallow for each of the following lengths: L = 6 ft 8 ft, and 10.0 ft.