The 'corbel' in RC construction is designed for:
Choose the correct answer
Bending only (same as beam design)
Strut-and-tie action — diagonal concrete strut + horizontal tension tie at top; a/d ≤ 1 governs design method
Column buckling
Punching shear at column head
Correct Answer
B. Strut-and-tie action — diagonal concrete strut + horizontal tension tie at top; a/d ≤ 1 governs design method
Why is this the answer?
Corbel (short bracket): a/d ≤ 1 (shear span to depth). Failure mode: diagonal tension / strut-and-tie. Design by IS 456 Cl. 17 / strut-and-tie method: main tension tie (Ast at top), strut in concrete, friction horizontal force (from beam bearing = 0.2V horizontal force on corbel). Main reinforcement: horizontal (primary), plus vertical stirrups. Very different from beam design (very short span).
Related RCC MCQs
More solved RCC questions for AE/JE Civil Engineering exams.
- The 'ductility' of RC structures is improved under earthquake loading by:
- For a circular RC water tank with rigid base, the hoop tension is maximum at:
- The 'end block' in a post-tensioned member is specially designed for:
- A 'shear wall' in a multi-storey RC building acts as:
- The 'minimum clear cover' for reinforcement in a RCC beam in severe exposure (IS 456) is:
- The 'torsion' in RC beams is resisted by:
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