Question

For first-class brickwork, the thickness (in mm) of mortar joint shall not be less than
1. 2
2. 5
3. 10
4. 8

Answer 1

Correct Answer - Option 2 : 5

The following points should be remembered about first class brick work:

1. Tolerance in dimensions is ± 3%.

2. Water absorption less than 15 %.

3. Compressive strength greater than 10.7 N/mm².

4.  Cement sand ratio of mortar should be 1:3 to 1:6.

5.  Curing period is of 10 days.

6.  The thickness of mortar joint shall be greater than 5 mm.

 7. Used for exterior wall brick work, short columns and arches.