Air renewal in occupied premises |
Renew/time N |
Cathedrals |
0 |
Modern church (low ceilings) |
1 - 2 |
Schools, classrooms |
2 - 3 |
Bank branch |
3 - 4 |
Canteens (factories or military) |
4 - 6 |
Hospitals |
5 - 6 |
General offices |
5 - 6 |
Hotel bar |
5 - 8 |
Fine restaurants |
5 - 6 |
Laboratories (with localised hoods) |
6 - 8 |
Mechanisation workshops |
5 - 10 |
Pubs (with tanks) |
10 - 12 |
General factories |
5 - 10 |
Meeting rooms |
5 - 8 |
Car parks |
6 - 8 |
Dance halls |
6 - 8 |
Discotheques |
10 - 12 |
Average restaurant (third full of smokers) |
8 - 10 |
Upper balconies |
6 - 10 |
Private members clubs (with smokers) |
8 - 10 |
Cafιs |
10 - 12 |
Domestic kitchens (hood installation recommended) |
10 - 15 |
Theatres |
10 - 12 |
Washrooms |
13 - 15 |
Games room (with smokers) |
15 - 18 |
Cinemas |
15 - 18 |
Cafeterias and fast-food |
15 - 18 |
Industrial kitchens (hood must be used) |
15 - 20 |
Launderettes |
20 - 30 |
Foundries (without localised extraction) |
20 - 30 |
Dry cleaners |
20 - 30 |
Bakeries |
25 - 35 |
Industrial units with ovens and baths (without hoods) |
30 - 60 |
Painting workshops (hood installation recommended) |
40 - 60 |