For multi-family housing buildings accommodating 100 or more units, ventilation systems, whether natural circulation or forced circulation, shall be installed to ensure at least 0.7 ventilation per hour.
Complex facilities with gross area of 2,000 m2 or larger (underground commercial area) or 3,000 m2 or larger (library, welfare facility) must have forced ventilation systems with flow rate of 36 m3/h or larger, and sales and business facilities must have forced ventilation systems with flow rate of 29 m3/h or larger.
School Health Act
Forced ventilation system shall be operating on a regular basis
- Flow rate per person: 21m3/h or above
CO2 concentration: 1,000 ppm/h or below
Fine Dust: 150 ug/m3 or below 24-hour mean
Indoor Air Quality (Recommended Standard)
- CO : 1,000ppm/h or below
CO2 : 1,000ppm/h or below
Form Aldehyde: 210 ug/m3 or below
Benzene: 30 ug/m or below
Indoor Air Pollutants and effects thereof