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If fck and fy are characteristic strength of concrete and yield stress of steel respectively and Es is the modulus of elasticity of steel, the ultimate flexural strain in concrete can be taken as
  • a)
    0.002
  • b)
    fck/1000
  • c)
    0.0035
  • d)
    (fy/ (1.15 Es)) + 0.002
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If fck and fy are characteristic strength of concrete and yield stress...

At certain depth, the fibers would have reached the strain of 0.002 and the stress of 0.446fck.
On further increasing the load, the strain will ultimately reach to the value of 0.0035.
Beyond this strain, the concrete is believed to fail. So, once the extreme fibers fail, the cracks will develop, which leads to the weakening of the section and leading to failure of the structure.
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Most Upvoted Answer
If fck and fy are characteristic strength of concrete and yield stress...
Ultimate Flexural Strain in Concrete

The ultimate flexural strain in concrete can be determined using the given parameters, which include the characteristic strength of concrete (fck), the yield stress of steel (fy), and the modulus of elasticity of steel (Es).

Formula for Ultimate Flexural Strain

The formula for the ultimate flexural strain in concrete is not explicitly mentioned in the options. However, we can determine the correct answer by analyzing the given options and the parameters involved.

Option Analysis

Let's analyze each option to determine the correct answer:

a) 0.002
This option suggests a fixed value of 0.002 for the ultimate flexural strain in concrete. However, the ultimate flexural strain is not a constant and depends on several factors, including the properties of the materials used.

b) fck/1000
This option suggests that the ultimate flexural strain is equal to the characteristic strength of concrete divided by 1000. However, this is not a commonly used formula for determining the ultimate flexural strain.

d) (fy/ (1.15 Es))
This option suggests that the ultimate flexural strain is equal to the yield stress of steel divided by 1.15 times the modulus of elasticity of steel. While this formula includes the parameters of steel, it does not consider the concrete properties, which are essential in determining the ultimate flexural strain.

Correct Answer: c) 0.0035
This option suggests that the ultimate flexural strain in concrete is equal to 0.0035. Although the formula for determining the ultimate flexural strain is not explicitly given, this option provides a specific value that is commonly used in practice. The value of 0.0035 represents a reasonable estimate for the ultimate flexural strain in concrete.

Conclusion

Based on the analysis of the given options and the parameters involved, the correct answer for the ultimate flexural strain in concrete is option c) 0.0035. This value is commonly used in engineering practice and provides a reasonable estimate for the ultimate flexural strain.
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If fck and fy are characteristic strength of concrete and yield stress of steel respectively and Es is the modulus of elasticity of steel, the ultimate flexural strain in concrete can be taken asa)0.002b)fck/1000c)0.0035d)(fy/ (1.15 Es)) + 0.002Correct answer is option 'C'. Can you explain this answer?
Question Description
If fck and fy are characteristic strength of concrete and yield stress of steel respectively and Es is the modulus of elasticity of steel, the ultimate flexural strain in concrete can be taken asa)0.002b)fck/1000c)0.0035d)(fy/ (1.15 Es)) + 0.002Correct answer is option 'C'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about If fck and fy are characteristic strength of concrete and yield stress of steel respectively and Es is the modulus of elasticity of steel, the ultimate flexural strain in concrete can be taken asa)0.002b)fck/1000c)0.0035d)(fy/ (1.15 Es)) + 0.002Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If fck and fy are characteristic strength of concrete and yield stress of steel respectively and Es is the modulus of elasticity of steel, the ultimate flexural strain in concrete can be taken asa)0.002b)fck/1000c)0.0035d)(fy/ (1.15 Es)) + 0.002Correct answer is option 'C'. Can you explain this answer?.
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