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If characteristic compressive strength of concrete fck is defined as strength below which not more than 95% of the test result are expected to fall, the expression of fck in term of mean strength fm and standard deviation σ would be
  • a)
    fm - 1.656
  • b)
    fm + 1.656
  • c)
    fm
  • d)
    fm + 0.1656
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If characteristic compressivestrength of concrete fck is definedas str...
S can be given by:

fck = fm - 1.65s

where:

- fck is the characteristic compressive strength of concrete
- fm is the mean strength of concrete
- s is the standard deviation of concrete strength
- 1.65 is a constant value representing the number of standard deviations from the mean required to obtain a 95% confidence level.

This equation is commonly used to estimate the characteristic strength of concrete based on the results of compressive strength tests. It allows engineers to determine the minimum strength required for a particular application, such as building design or structural analysis.
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If characteristic compressivestrength of concrete fck is definedas strength below which not morethan 95% of the test result areexpected to fall, the expression offck in term of mean strength fm andstandard deviation σ would bea)fm - 1.656b)fm + 1.656c)fmd)fm + 0.1656Correct answer is option 'B'. Can you explain this answer?
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If characteristic compressivestrength of concrete fck is definedas strength below which not morethan 95% of the test result areexpected to fall, the expression offck in term of mean strength fm andstandard deviation σ would bea)fm - 1.656b)fm + 1.656c)fmd)fm + 0.1656Correct answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about If characteristic compressivestrength of concrete fck is definedas strength below which not morethan 95% of the test result areexpected to fall, the expression offck in term of mean strength fm andstandard deviation σ would bea)fm - 1.656b)fm + 1.656c)fmd)fm + 0.1656Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If characteristic compressivestrength of concrete fck is definedas strength below which not morethan 95% of the test result areexpected to fall, the expression offck in term of mean strength fm andstandard deviation σ would bea)fm - 1.656b)fm + 1.656c)fmd)fm + 0.1656Correct answer is option 'B'. Can you explain this answer?.
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