i need it in less than $30$ mins: Design strength f$\_($e$)=4000\backslash$psi $=12\backslash$deg $=200$ psi. Fineness modulus of fine

aggregate $=2\mathrm{.}6,$ maximum aggregate size $=2^(\text{'}\text{'})$ and nominal maximum aggregate size $=15^(\text{'}\text{'}).$

Bulk oven$-$dry specific gravity of coarse aggregate $=2\mathrm{.}6$ and oven$-$dry rodded density of

coarse aggregate $=125$l$($b$)/($f$^(3))$