In IS 800:2007, a compact section is one where:
Choose the correct answer
No local buckling before reaching yield stress at extreme fiber
Full plastic moment can develop without local buckling before rotation capacity is exhausted
Full plastic moment cannot develop
Only elastic moment capacity is achievable
Correct Answer
B. Full plastic moment can develop without local buckling before rotation capacity is exhausted
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IS 800:2007 classifies sections as: Plastic (can develop plastic hinge with rotation capacity), Compact (can reach plastic moment but limited rotation capacity), Semi-compact (only extreme fiber yielding), Slender (local buckling before yield).
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