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Q: In an under-reinforced section,
  • A. Concrete is not fully stressed up to permissible stress
  • B. Reinforcement is not fully stressed up to permissible stress
  • C. Either (A) or (B)
  • D. Both (A) and (B)
Correct Answer: Option A - In an under reinforcement section, the concrete is not fully stressed upto the permissible stress level, while the reinforcement is fully stressed upto to its permissible stress level. Over reinforced section– The permissible maximum stress of concrete is reached first to its maximum value as compared to the permissible maximum stress of steel.
A. In an under reinforcement section, the concrete is not fully stressed upto the permissible stress level, while the reinforcement is fully stressed upto to its permissible stress level. Over reinforced section– The permissible maximum stress of concrete is reached first to its maximum value as compared to the permissible maximum stress of steel.

Explanations:

In an under reinforcement section, the concrete is not fully stressed upto the permissible stress level, while the reinforcement is fully stressed upto to its permissible stress level. Over reinforced section– The permissible maximum stress of concrete is reached first to its maximum value as compared to the permissible maximum stress of steel.