$2-4$ A four$-$span post$-$tensioned one$-$way floor slab is described in Fig. $2-30.$ The tendons are

stressed from both ends and the stressing procedure is: jack to $80\%$ of the ultimate tensile

strength $($UTS$),$ release to $60\%$ UTS, rejack to $70\%$ UTS, and anchor. Assuming that $=0\mathrm{.}25,$

$K=\frac{0\mathrm{.}0015}{f}t(\frac{0\mathrm{.}005}{m}),$ calculate $($a$)$ the tendon force at $1\mathrm{.}44,2\mathrm{.}0,2\mathrm{.}5,$ and $3\mathrm{.}0$ and $($b$)$ the

average tendon force in each span. Express the forces as a ratio of the UTS of the tendon.

Assume that the anchor set is negligibly small.