Correct Answer - Option 3 : 9 cm
Explanation:
| Different Regions |
Size of brick |
| Delhi |
19 cm × 9 cm × 9 cm |
| UP PWD |
24 cm × 11.4 cm × 7 cm |
| Punjab PWD |
23 cm × 11 cm × 7 cm |
| Punjab Irrigation |
23 cm × 11 cm × 7 cm |
So, 1/2 brick thick wall ranges from 7 cm to 9 cm.
With 1 cm thick mortar, the actual thickness of wall = Thickness of wall + Mortar thickness = 9 cm to 10 cm.
