Consider the following statements:1. Maximum strain in concrete at the...
Explanation:
To understand the given statements, let's first discuss the provisions of IS : 456-2000 on limit state design for concrete.
Bending:
In bending, the outermost compression fiber of a concrete beam experiences maximum strain. According to IS : 456-2000, the maximum allowable strain in concrete at the outermost compression fiber is taken as 0.0035. This means that the concrete can withstand a maximum strain of 0.0035 before it reaches its ultimate limit state in bending.
Axial Compression:
In axial compression, the entire cross-section of a concrete member is subjected to compressive stresses. According to IS : 456-2000, the maximum allowable compressive strain in concrete is taken as 0.002. This means that the concrete can withstand a maximum compressive strain of 0.002 before it reaches its ultimate limit state in axial compression.
Analysis of Statements:
Now, let's analyze the given statements in light of the provisions of IS : 456-2000.
- Statement 1: "Maximum strain in concrete at the outermost compression fiber is taken to be 0.0035 in bending."
This statement is consistent with the provisions of IS : 456-2000. Therefore, Statement 1 is true.
- Statement 2: "The maximum compressive strain in concrete in axial compression is taken as 0.002."
This statement is also consistent with the provisions of IS : 456-2000. Therefore, Statement 2 is true.
Conclusion:
Both Statement 1 and Statement 2 are true according to the provisions of IS : 456-2000 on limit state design. Therefore, the correct answer is option 'C' - "Both Statement 1 and 2 are true."