What is the target mean strength (N/mm2) the M30 grade concrete, the standard deviation is 5.0?

Questions › Category: Civil Engineering › What is the target mean strength (N/mm2) the M30 grade concrete, the standard deviation is 5.0?

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VideRime Staff asked 4 years ago

What is the target mean strength (N/mm2) the M30 grade concrete, the standard deviation is 5.0?

a) 21.75

b) 30

c) 38.25 (Ans)

d) 40.25

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