Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement is provided on thei) bottom face in front counterfortii) inclined face in front counterfortiii) bottom face in back counterfortiv) inclined face in back counterEortThe correct answer is

(iii) and (iv)
(i) and (iv)
(i) and (ii),
(ii) and (iii)

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Concrete Technology and Design of Concrete Structures
According to IS : 456-1978, the fiexural strength of concrete is

inversely proportional to square root of compressive strength
directly proportional to square root of compressive strength
directly proportional to compressive strength
inversely proportional to compressive strength

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