A $9$ in$.$ thick one$-$way slab is supported with No$.3$ bars, with spacing of $10$ in$..$ The span length of the slab is $12$

feet, while remembering the clear concrete cover that is $\frac{3}{4}$ in$.$ thick. Use; $f^{\text{'}}=4000,$ and $fy=60,000.$

a$.$ Check if the thickness meets the requirements on minimum slab thickness.

b$.$ Calculate the design flexural strength of a $1$ foot strip of the slab and check if the design here meets the

requirements on minimum reinforcement area.

c$.$ Calculate the design shear strength of the $1$ foot strip of slab.