Question $(3)$:

A two$-$way slab system shown in figure has been assumed with thickness of $140mm,$ all beams are $300800mm,$ and columns are $300300mm.$ Use the material properties: $f_c^{\text{'}}=25$MPa $($normal weight concrete$)$ and $f_y=420$MPa. For panel A$,$ check whether slab thickness satisfies minimum code requirement.