[AIVC, Air infiltration and ventilation glossary, 1992]:the time during which people are in a building (generally expressed in hours per day)

[AIVC, Air infiltration and ventilation glossary, 1992]:the pattern of activity of occupants in a building, including the number of occupants, their distribution, activities and time spent within the building, and how they interact with the buildings facilities, such as ventilation … Continue reading →

[ISO 16814:2008, 3.26]:values set by competent national authorities or other relevant national institutions as limits for concentrations of hazardous compounds in workplace air to prevent adverse health effects on healthy adult workers.