Q5. Do calculations to check whether SG8 main beams (pairs of 300mm x 75mm (i.e. 280 x 70mm)) sections can resist a maximum moment demand, due to 1.2G+1.5Q, of M*= 56kNm (associated with the case where the mid-span column is present). Assume that the pairs of beams are connected with blocking so that they act as a combined parallel system to resist the applied loads (i.e. consider k₉ factor when computing the strength of the two members resisting load in parallel – refer Eqn 2.4.5.3 and Figure 2.3 of AS/NZS1720.1:2022). Report the ratio of demand to capacity; M*/ϕM_n. [%]