The column shown below is No$.1$ DF$-$L from the Posts and Timbers category. Bracing

conditions are the same about both axes. Assume dry conditions, normal temperature, and

the member is not incised. The live load, $L_r,$ is a construction load.

Use ASD to select the lightest square section $55$ or larger.

Assume $C_P=0\mathrm{.}4$ to get a trial size then determine the actual $C_P$ and $F_c^{\text{'}}$ for your selected

column size.

Show all steps including your calculations$/$explanations for $F^{**},E_{\text{m}\text{i}\text{n}}^{\text{'}},F_c^{\text{'}},F_{cE},f_c,$ etc. $c$

Show calculations and explanations that prove the next smaller square timber does not

work for this column.