column load at support A for the two cases listed below. Use a stone concrete unit weight $=144l\frac{b}{f}{t}^3$ and live load $=10ll\frac{b}{f}{t}^2.$

Case $1$: Set $a=12ft,b=30ft($one$-$way slab$).$

Case $2$: Set $a=12ft,b=12ft($two$-$way slab$).$