Q$.$ No$.1$

The plan below is for a four$-$storey residential building $($inter storey height of $4$ m $)$ with a bay

width of $6\mathrm{.}6$ m in both directions. The total deal load $($including structural and non$-$structural$)$ is

$5K\frac{N}{m^2}$; you can assume the live load yourself. The Steel grade used is $275$ Mpa $,$ and the

secondary beams are oriented in the transversal directions, having a centre$-$to$-$centre spacing of

$2\mathrm{.}2$ m $.$ You are required to$,$

$(1)-$ Estimate the total factored load using SBC load combination $($ULS$)$ for the design of

Secondary beams, primary beams $($encircled$)$ and on the columns at the base, $(50)$

and

$(2)-$ Find the section modules $(W)$ required for the design of Secondary beams and Primary

beams under the estimated loads. $(50)$