Design completely using $250mm450mm$ fc $=20\mathrm{.}7$MPa fs $=124$MPa

$16mm$ main rebars, and $10mm$ stirrups

The loadings floor finish, ceiling, movable partitions, and live load are $536Pa,493Pa,825$

$Pa,$ and $2474Pa,$ respectively. The strength of materials are $f{c}^6=20\mathrm{.}7$Mpa and $fs=124$Mpa.

$(2)$ Design the slab with dimensions $3\mathrm{.}2m7\mathrm{.}1m$

$(3)$ Design the floor system $3\mathrm{.}4m4\mathrm{.}2m.$