GATE2015-2-35

Question

In a pre-stressed concrete beam section shown in the figure, the net loss is $10 \%$ and the final pre-stressing force applied at $X$ is $750$ kN. The initial fiber stresses (in $N/mm^2$) at the top and bottom of the beam were:

• A. $4.166$ and $20.833$
• B. $ – 4.166$ and $ – 20.833$
• C. $4.166$ and $ – 20.833$
• D. $ – 4.166$ and $20.833$