Which of the following RCC beams will have brittle failure during bending test?
- ARCC beam with equal reinforcement in tension and compression zone with stirrups
- BRCC beam with equal reinforcement in tension and compression zone without stirrupsCorrect
- CRCC beam with more reinforcement in tension zone and less reinforcement in compression zone with stirrups
- DRCC beam with less reinforcement in tension zone and more reinforcement in compression zone with stirrups
Solution
Concept
Brittle failure
Step-by-step solution
1. Without stirrups a beam can fail suddenly in shear before reaching its flexural capacity. 2. The beam without stirrups is therefore brittle.
Explanation
Stirrups give confinement and shear strength.
Why the other options are wrong
Beams with stirrups fail in a more ductile way.
Shortcut
No stirrups → brittle.
Correct answer: B) RCC beam with equal reinforcement in tension and compression zone without stirrups