AIR CHANGES
A.OCCUPANCY KNOWN
B. OCCUPANCY UNKNOWN
Type
M³ per person
per hour
Type
Air changes
per hour
I.H.V.E Code 42.0 Minimum Cinemas, Theatres 5-10
London Country Council, Regulations 28.0 Minimum Kitchens, Large 10-20
Small
20-40
Factories, Shops 57.0 Lavatories 5-10
Restaurants 5-10
Factories, where health hazard is present 100.0 Offices 3-8
Schools, Theatres 50.0 Baths 5-8
Hospitals - ordinary 70.0 Garages 5
               - Surgical 85.0 Engines Rooms, Boiler House 4
               - Contagious 170.0

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