If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre -stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is_______________?

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Columns may be made of plain concrete if their unsupported lengths do not exceed their least lateral dimension_______________?

A. Two times B. Three times C. Four times D. Five times...

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

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