After 28 days, the cube strength of a grillage beam should not be less than ?

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Ravi Shankar

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📊 Steel Structures Design

Q. After 28 days, the cube strength of a grillage beam should not be less than ?

(A) 10 N/mm²
(B) 12 N/mm²
(C) 14 N/mm²
(D) 16 N/mm²

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✅ Correct Answer: (D) 16 N/mm²

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