The target mean strength fm for concrete mix design obtained from the – McqOptions

MCQOPTIONS

1.	The target mean strength fm for concrete mix design obtained from the characteristic strength fck and standard deviation σ, as defined in IS:456-2000, is
A.	fck + 1.35σ
B.	fck + 1.45σ
C.	fck + 1.55σ
D.	fck + 1.65σ
Answer» E.

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