What is the required outdoor air rate for corridors and common areas within conditioned spaces?

The required outdoor air rate for corridors and common areas within conditioned spaces is established to ensure adequate ventilation, improve indoor air quality, and maintain a comfortable atmosphere for occupants. The rate of 0.06 cubic feet per minute (cfm) per square foot of floor area is based on guidelines and standards specified in building and mechanical codes, particularly emphasizing that those areas need proper air exchanges to accommodate the occupancy and supportive activities taking place.

Using this rate helps to regulate moisture levels, reduce pollutants, and provide a consistent fresh air supply, which is crucial for spaces frequented by people, such as corridors and communal areas. Correct adherence to outdoor air requirements plays a vital role in sustaining a healthy indoor environment and preventing issues related to inadequate ventilation.