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Q: Which of the following represent the crushing strength (MPa) for the good quality stone that are used in the construction of buildings?
  • A. Less than 20
  • B. 20 to 60
  • C. 60 to 80
  • D. Greater than 100
Correct Answer: Option D - In the construction of building the good quality stone having crushing strength greater than 100 MPa. A good stone should be strong and durable to withstand the disintegrating action of weather. Crushing strength is determining with the help of compression testing machine (IS–1121–1974). The load is applied gently at a rate of 14N/mm² per minute.
D. In the construction of building the good quality stone having crushing strength greater than 100 MPa. A good stone should be strong and durable to withstand the disintegrating action of weather. Crushing strength is determining with the help of compression testing machine (IS–1121–1974). The load is applied gently at a rate of 14N/mm² per minute.

Explanations:

In the construction of building the good quality stone having crushing strength greater than 100 MPa. A good stone should be strong and durable to withstand the disintegrating action of weather. Crushing strength is determining with the help of compression testing machine (IS–1121–1974). The load is applied gently at a rate of 14N/mm² per minute.