![]() ![]() Unlisted occupancies: If the occupancy category for a proposed space or zone is not listed, the requirements for the listed occupancy category that is most similar in terms of occupant density, activities, and building construction shall be used. To comply with the Standard, designers of mechanical ventilation systems are tasked to provide specific minimum rates of acceptable outdoor air to the breathing. Default combined outdoor air rate (per person): This rate is based on the default occupant density.Ħ. Default occupant density: The default occupant density shall be used when the actual occupant density is not known.ĥ. Rates may be adjusted for actual density but such adjustment is not required for compliance with the standard.Ĥ. ISO 17772 specifies that supply air flow per person in residential buildings should be 10 l/s-person for Category I, 7 l/s-person for Category II, and 4 l/s. Air density: Volumetric airflow rates are based on an air density of 0.075 lb da/ft 3, which corresponds to dry air at a barometric pressure of 1 atm and an air temperature of 70☏. ![]() The occupancy types where this is allowed are most of those with an area outdoor air rate of 0.06 cfm/ft2 (0.3 L/sm2). ![]() Rates for smoking-permitted spaces must be determined using other methods.ģ. H to Table 6.2.2.1, Minimum Ventilation Rates in Breathing Zone. Smoking: This table applies to no-smoking areas. TABLE 6-1 MINIMUM VENTILATION RATES IN BREATHING ZONE. Related requirements: The rates in this table are based on all other applicable requirements of ANSI/ASHRAE Standard 62.1-2007 being met.Ģ. standard increased minimum outdoor airflow rates signifi- cantly and introduced a requirement for. ![]()
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