railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Building Component
Cavity wall is generally provided for
1. heat insulation
2. sound insulation
3. prevention of dampness of these statement
1
1 and 2 are correct
2
2 and 3 are correct
3
1, 2 and 3 are correct
4
None of the above are correct