search
Q: What should be the assumed standard deviation for target mean strength of concrete mix in mix design of M15 grade of concrete as per Indian standard guidelines?
  • A. 4.0 N/mm²
  • B. 4.5 N/mm²
  • C. 3.5 N/mm²
  • D. 5.0 N/mm²
Correct Answer: Option C - See the above explanation.
C. See the above explanation.

Explanations:

See the above explanation.