Civil Engineering > GATE 2017 SET-2 > Reinforced Concrete
Let the characteristic strength be defined as that value, below which not more than 50% of the results are expected to fall. Assuming a standard deviation of 4 MPa, the target mean strength (in MPa) to be considered in the mix design of a M25 concrete would be
A
18.42
B
21.00
C
25.00
D
31.58

Correct : d

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