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Q: By over-reinforcing a beam, the moment of resistance can be increased not more than
  • A. 10%
  • B. 15%
  • C. 20%
  • D. 25%
Correct Answer: Option D - By increasing the quantity of steel in the tension zone, the moment of resistance cannot be increased indefinitely, usually, the moment of resistance can be increased by not more than 25% over the balanced moment of resistance, by making the beam over-reinforced on the tension side.
D. By increasing the quantity of steel in the tension zone, the moment of resistance cannot be increased indefinitely, usually, the moment of resistance can be increased by not more than 25% over the balanced moment of resistance, by making the beam over-reinforced on the tension side.

Explanations:

By increasing the quantity of steel in the tension zone, the moment of resistance cannot be increased indefinitely, usually, the moment of resistance can be increased by not more than 25% over the balanced moment of resistance, by making the beam over-reinforced on the tension side.