Civil Engineering - UPSC Civil Service Exam Questions - Discussion


Consider for following statements :
In an under-reinforced concrete beam,
1. actual depth of neutral axis is less than the critical depth of neutral axis.
2. concrete reaches ultimate stress prior to steel reaching the ultimate stress.
3. moment of resistance is less than that of balanced sections.
4. lever arm of resisting couple is less than that of balanced sections.
Which of the statements given above are correct ?

[A]. 1 and 2
[B]. 1 and 3
[C]. 2, 3 and 4
[D]. 1 and 4

Answer: Option B


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