Computer · Concrete Technology
The assumed standard deviation for M20 grade concrete, used for calculating the target mean strength during mix design as per IS 10262, is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.5 N/mm2
- 24.0 N/mm2✓
- 31.5 N/mm2
- 41.0 N/mm2
Correct answer
4.0 N/mm2
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