As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete shearing slab, in concrete pavements, must confirm to the requirement that ?

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Ritu Nagar

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📊 Highway Engineering

Q. As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete shearing slab, in concrete pavements, must confirm to the requirement that ?

(A) the base or sub-base extends atleast 30 cm wider on either side of the width to be concreted
(B) no soft spots are present in the sub-grade or sub-base
(C) the sub-grade is properly drained
(D) all of the above

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✅ Correct Answer: (D) all of the above

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