A square concrete column with dimension $22*22$ in is reinforced with a total of eight No$.10($No $32)$ bars arranged uniformly around the column perimeter. Material strengths are fy$=60$ksi and fc$\text{'}=4000$psi, with stress$-$strain curces as given by curve a and c of fig $3\mathrm{.}3.$Calculate the percentage of the total load carried by the concrete and by the steel as load is fradually increased from $0$ to failure, which is assumed to occur when the concrete strain reaches a limit value of $0\mathrm{.}0030.$ Determine the loads at strain increments of $0\mathrm{.}0005$ upto the failure strain. And graph your resilts,plotting load percentage vs strain. The modilar ratio may be assumed at n$=8$ for these materials.

FIGURE $3\mathrm{.}3$

Concrete and steel stressstrain curves.