Concrete Density $($y$.)=25$ kN$/$m$\text{'}$Fou $=30$N$/$mm$?$Flooring $=1$ kN$/$m$\text{'}$Fy $=400$N$/$mm$\text{'}$Live Load $=3\mathrm{.}0$ kN$/$m$?$Floor hight $=3\mathrm{.}0$mWall Thickness $=120$ mmWall Density $($yw$)=18$ kN$/$m$\text{'}$Dimension of any beam $=250*900$ Dimension of Step $=150*300$mmGiven Data for figures $1$ & $2$:It is required to:$1-$ Suggest structural systems for figures $1$& $2\mathrm{.}2-$ Design the staircase for both figures$\mathrm{.}3-$ Draw to a convenient scale for the details of the stairs and supporting beams for both figures.