ASHRAE+62.1-2022+(1) - Page 060
Extracted Content
Table J-1 Rate Rationale (see Table 6-1) (Continued)
Occupancy Category Description/Rationale
Daycare (through age 4) Occupant activity is moderate. There is considerable aerobic activity in addition to the occupants being very vocal.
Also, the occupants are primarily young children with higher metabolic rates. There are significant space-related contaminants, including diapers, arts-and-crafts supplies, and cleaning agents. These contaminants, particularly the diapers, result in this space being classified as Air Class 2.
Lecture classroom Occupant activity is primarily sedentary (seated or light walking). However, occupants are generally more vocal, resulting in higher metabolic rates. There are no significant space-related contaminants.
Lecture hall (fixed seats) Occupant activity is primarily sedentary (seated or light walking). However, occupants are generally more vocal,
resulting in higher metabolic rates. There are no significant space-related contaminants.
Media center Occupant activity is primarily sedentary (seated or light walking). However, occupants are generally more vocal. Also, the occupants are primarily children/young adults with higher metabolic rates and often more bioeffluents. There are some significant space-related contaminants, typically toner cartridges and paper (both loose leaf and bound).
Multiuse assembly Occupant activity is primarily sedentary (seated or light walking). However, occupants are generally more vocal, resulting in higher metabolic rates. There are no significant space-related contaminants.
Music/theater/dance Occupant activity is high. There is considerable aerobic activity in addition to the occupants being very vocal. There are no significant space-related contaminants.
Science laboratories Occupant activity is moderate. There is considerable aerobic activity in addition to the occupants being very vocal. Also, the occupants are primarily children with higher metabolic rates. There are significant space-related contaminants, including open chemicals and cleaning agents. The presence of these open contaminants result in this space being classified as Air Class 2. OSHA regulated exposure limits must be maintained, ensuring Class 2 defined air is present. This condition is covered in Table 6-2.
People Outdoor Air Rate, cfm/person
People Outdoor Air Rate, L/s/person
Area Outdoor Air Rate,
cfm/ft [2]
Area Outdoor Air Rate, Air
L/s·m [2] Class
University/college laboratories
Occupant activity is moderate. There is considerable aerobic activity in addition to the occupants being very vocal. Also, the occupants have higher metabolic rates. There are significant space-related contaminants, including open chemicals and cleaning agents. The presence of these open contaminants results in this space being classified as Air Class 2. OSHA regulated exposure limits must be maintained, ensuring Class 2 defined air is present. This condition is covered in Table 6-2.
Wood/metal shop Occupant activity is moderate. There is considerable aerobic activity in addition to the occupants being very vocal. Also, the occupants can be children/young adults with higher metabolic rates. There are significant space-related contaminants, including sawdust, oils, metal shavings, and chemical agents. The presence of these open contaminants result in this space being classified as Air Class 2.
Food and Beverage Service
Bars, cocktail lounges Occupant activity is moderate (standing, talking, eating/drinking, waiting tables). The presence of large quantities of open drinks and prepared foods creates higher levels of space-related contaminants. The associated food and drink odors results in this space being classified as Air Class 2.
Cafeteria/ fast-food dining
Occupant activity is moderate (standing, talking, eating, cleaning tables). The presence of large quantities of unpackaged, prepared foods creates higher levels of space-related contaminants. The associated food odors result in this space being classified as Air Class 2.
10 5 0.18 0.9 2
7.5 3.8 0.06 0.3 1
7.5 3.8 0.06 0.3 1
10 5 0.12 0.6 1
7.5 3.8 0.06 0.3 1
10 5 0.06 0.3 1
10 5 0.18 0.9 2
10 5 0.18 0.9 2
10 5 0.18 0.9 2
7.5 3.8 0.18 0.9 2
7.5 3.8 0.18 0.9 2