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Grading of Concrete
Ordinary conc...
Question
Ordinary concrete is not used for concrete grades :
A
M 10
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B
M 15
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C
M 25
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D
M 40
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Solution
The correct option is
D
M 40
Ordinary concrete (nominal mix) is used upto M 25.
Note: IS : 456 restricts the use of a nominal mix of M 20 grade only.
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