Determine the maximum allowable load for the following $68$ columns, for the following unbraced lengths. Use #$1$ Douglas$-$Fir $($Actual dimensions: $5\mathrm{.}5"$ x $7\mathrm{.}5")$

a$.Lx=Ly=9^{\text{'}}-0"$

b$.Lx={14}^{\text{'}}-0^{\text{'}\text{'}},Ly=8^{\text{'}}-0^{\text{'}\text{'}}$

What is the maximum allowable load on a W$10$x$100$ column $(Fy=36$ksi $)$ with an unbraced length of $18\text{'}-0"?$