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Q: The maximum size of aggregate in concrete depends upon
  • A. thickness of the structural section
  • B. spacing of reinforcement
  • C. clear cover
  • D. All option are correct
Correct Answer: Option D - The maximum size of aggregate to be used in reinforced concrete work depends on the thickness of the structural member and the space available around the reinforcing bars. Generally a maximum nominal size of 20mm is found to be satisfactory in RC structural elements. In case of heavily reinforced members, the size is restricted to the 5mm less than the minimum clear spacing between bars. or minimum cover to reinforcement, whichever is smaller.
D. The maximum size of aggregate to be used in reinforced concrete work depends on the thickness of the structural member and the space available around the reinforcing bars. Generally a maximum nominal size of 20mm is found to be satisfactory in RC structural elements. In case of heavily reinforced members, the size is restricted to the 5mm less than the minimum clear spacing between bars. or minimum cover to reinforcement, whichever is smaller.

Explanations:

The maximum size of aggregate to be used in reinforced concrete work depends on the thickness of the structural member and the space available around the reinforcing bars. Generally a maximum nominal size of 20mm is found to be satisfactory in RC structural elements. In case of heavily reinforced members, the size is restricted to the 5mm less than the minimum clear spacing between bars. or minimum cover to reinforcement, whichever is smaller.