search
arrow-left Previous
Next arrow-right
Q: Water absorption for class A type of roof tiles is:
  • A. 4-9%
  • B. 20-24%
  • C. 14-19%
  • D. 26-29%
Correct Answer: Option C - Roofing tiles are generally have thinner sections as compared to bricks and therefore require better care and attention at all stages of manufacture. As per IS 654-1972– • Water absorption for class A type of roofing tiles are 14–19% and average breaking load 68 kg/cm². • Water absorption for class AA type of roofing tiles are 9–10% and average breaking load 102 kg/cm².
C. Roofing tiles are generally have thinner sections as compared to bricks and therefore require better care and attention at all stages of manufacture. As per IS 654-1972– • Water absorption for class A type of roofing tiles are 14–19% and average breaking load 68 kg/cm². • Water absorption for class AA type of roofing tiles are 9–10% and average breaking load 102 kg/cm².

Explanations:

Roofing tiles are generally have thinner sections as compared to bricks and therefore require better care and attention at all stages of manufacture. As per IS 654-1972– • Water absorption for class A type of roofing tiles are 14–19% and average breaking load 68 kg/cm². • Water absorption for class AA type of roofing tiles are 9–10% and average breaking load 102 kg/cm².