RCC Structures Design
In a pre-stressed beam carrying an external load W with a bent tendon is having angle of inclination ? and pre-stressed load P. The net downward load at the centre is

W - 2P sin θ
W - P cos θ
W - P sin θ
W - 2P cos θ

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RCC Structures Design
A pre-stressed concrete member is preferred because

All listed here
Large size of long beams carrying large shear force need not be adopted
Removal of cracks in the members due to shrinkage
Its dimensions are not decided from the diagonal tensile stress

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