Q$4.$ Do calculations to check whether the SG$8$ timber studs on gridline A$,$ illustrated in Figure $8,$ with nominal section size $150$mm x $50$mm $($these are rough sawn dimensions and once dried, assume section size is $140$mm x $45$mm$)$ are able to sustain ULS loads due to $1\mathrm{.}2$G$+$Wu$+\backslash$Psi cQ of N$*=4$kN in compression and M$*=0\mathrm{.}6$kNm$.$ Report the critical ratio of demand $($due to combined actions$)$ to capacity $($see Equations $3\mathrm{.}27$ & $3\mathrm{.}28$ in reader$).$ For the column end restraint conditions, treat as $$studs in light framing$($refer Table $3\mathrm{.}1$ of reader$).$