Computer · Pre-stressed Concrete
A rectangular concrete beam of width 100 mm and depth 250 mm, spanning over 8 m, is prestressed by a straight cable carrying an effective prestressing force of 250 kN at an eccentricity of 40 mm. The beam supports a total load of 1.8 kN/m, inclusive of self-weight. What is the nature of stresses induced at the top and bottom fibres?
- 1Both top and bottom fibres in tension
- 2Bottom fibre in compression and top fibre in tension
- 3Top fibre in compression and bottom fibre in tension
- 4Both top and bottom fibres in compression✓
Correct answer
Both top and bottom fibres in compression
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