Can l get clear answer..? A post$-$tensioned cable of a beam $12m$ long, $350mm$ width, and $700mm$ depth is initially tensioned to a stress of $1200\frac{N}{m}m2\frac{N}{m}{m}^2$ at one end. If the tendons are curved so that the slope is $1$ in $15$ at each end with an area of $600m{m}^2,$ given the following data:

Relaxation of steel stress $=4\mathrm{.}5\%$ of initial stress

The coefficient of friction between duct and cable $=0\mathrm{.}55$

Creep Coefficient $=1\mathrm{.}8$

Modulus of elasticity for steel $=220$GPa

Modulus of elasticity for concrete $=38$GPa

Friction coefficient for wave effect $=\frac{0\mathrm{.}0015}{m}$

Shrinkage strain in concrete for post tensioning $=220{10}^6$

During anchoring, if there is a slip of $3mm$ at the jacking end.

Calculate the total percentage loss of stress in the wires at top and bottom. Assume the beam is a post tension beam and all the wires stressed simultaneously.