As per BIS 456-2000 (reaffirmed 2005), the minimum grade of concrete, – McqOptions

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1.	As per BIS 456-2000 (reaffirmed 2005), the minimum grade of concrete, with normal weight aggregate of 20 mm nominal maximum size, specified for a severe exposure condition is
A.	M 20
B.	M 25
C.	M 30
D.	M 35
Answer» D. M 35

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