Consider the following statements regarding bricks:
- The burnt clay bricks having compressive strength more than 40 N/mm2 are known as heavy duty bricks.
- The water absorption in good brick. Should not, in any case exceeds 20 percent of weight of dry.
- Bricks having crushing strength above 14 N/mm2 are graded as AA.
Which of the above statements is/are correct?
1
1 only
2
2 and 3
3
1 and 3
4
1,2 and 3
5
Question Not Attempted