Calculate the maximum allowable load $($in KN $)$ of a $5\mathrm{.}0$ m long sawn lumber column can

carry. The nominal size is $152\mathrm{.}4152\mathrm{.}4mm(6^{\text{'}\text{'}}{6}^{\text{'}\text{'}})$ and the actual size is $139\mathrm{.}7mm$

$139\mathrm{.}7$ mm $(5\mathrm{.}5"{5\mathrm{.}5}^{\text{'}\text{'}}).$ The applied loading is for $15-$year duration and the wood used

is visually graded sawn square Tindalo $(E=11\mathrm{.}721$GPA,$Fc=10\mathrm{.}342$MPa $).$ The column is

pinned both ends. Consider adjustments for load duration and moisture condition.