For the singly$-$reinforced beam section shown below, draw an approximate

moment $-$ curvature diagram. Make your drawing to a proper scale. Use kip$-$ft; $\frac{1}{?}$ in

for your $P(M$;$)$ points. Assume $f_c=5000$ psi and Grade $60$ steel.

Use only three points: cracking, yielding, and maximum. Show all necessary

diagrams used in your calculations: strains, stresses, and forces.

$(40$ points$)$