Q2. Do calculations to check whether the columns supporting the mezzanine floor, with nominal section size 150mm square (these are rough sawn dimensions and once dried, assume section size is 140mm square) are able to sustain a ULS compression load due to 1.2G + 1.5Q of N* = 150kN. Assume that the timber is SG8 and that member buckling is not an issue (i.e. just do the section checks as per Chapter 2 of reader). Report the ratio of demand to capacity; N*/ϕN_nc,timber. [%]