This standard applies to all indoor or enclosed spaces that people may occupy@ except where other applicable standards and requirements dictate larger amounts of ventilation than this standard. Release of moisture in residential kitchens and bathrooms@ locker rooms@ and swimming pools is included in the scope of this standard.Additional requirements for laboratory@ industrial@ and other spaces may be dictated by workplace and other standards@ as well as by the processes occurring within the space.Although the standard may be applied to both new and existing buildings@ the provisions of this standard are not intended to be applied retroactively when the standard is used as a mandatory regulation or code.This standard considers chemical@ physical@ and biological contaminants that can affect air quality. Thermal comfort requirements are not included in this standard.Acceptable indoor air quality may not be achieved in all buildings meeting the requirements of this standard for one or more of the following reasons:(a) because of the diversity of sources and contaminants in indoor air;(b) because of the many other factors that may affect occupant perception and acceptance of indoor air quality@ such as air temperature@ humidity@ noise@ lighting@ and psychological stress;(c) because of the range of susceptibility in the population; and(d) because outdoor air brought into the building may be unacceptable or may not be adequately cleaned.