General Design Criteria for Commercial & Public Buildings

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General Design Criteria for Commercial & Public Buildings

Applications Handbook 2003

American Society of Heating, Refigerating and Air Conditioning Engineers (ASHRAE)

Category	52.2 Filter Efficiency	52.1 Filter Efficiency	Air changes per hour	Air movement	Temperature & humidity, winter	Temperature & humidity, summer	Comments
Airport terminals	MERV 7 or better	35% or better	8 to 12	25 to 30 fpm @ 6' above floor	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh	Positive air pressure required in terminal
Bars	MERV 7	35%	15 to 20	30 fpm @ 6' above floor	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh
Bowling centers	MERV 5	10 to 15%	10 to 15	50 fpm @ 6' above floor	70 to 74^•F 20 to 30% rh	75 to 78^•F 50 to 55% rh
Bus terminals	MERV 7 with exfiltration	35% with exfiltration	8 to 12	25 to 30 fpm @ 6' above floor	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh	Positive air pressure required in terminal
Cafeterias & luncheonettes	MERV 7 or better	35% or better	12 to 15	50 fpm @ 6' above floor	70 to 74F ^a 20 to 30% rh	78^•F 50% rh
Garages ^d	MERV 5	10 to 15%	4 to 6	30 to 75 fpm	40 to 55^•F	80 to 100^•F	Negative air pressure required to rmove fumes; positive air pressure required in adjacent occupied spaces
Kitchens	MERV 5	10 to 15% or better	30 to 50 fpm	12 to 15^b	70 to 74^•F	85 to 88^•F	Negative air pressure required for odor control (see ASHRAE Handook, Applications, Chapter 31)
Museums (average)	MERV 7 to MERV 11 or better	35 to 60% or better	8 to 12	below 25 fpm	68 to 72^•F 40 to 45% rh
Museums (archival)	MERV 7 prefilters, charcoal, MEFV 13 to 14 final filters	35% prefilters, charcoal, 85-95% final filters ^c	8 to 12	below 25 fpm	See ASHRAE Handbook for Applications or contact Camfil Farr
Nightclubs & casinos	MERV 7 ^a	35% ^a	20 to 30	below 25 fpm @ 5' above floor	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh
Office buildings	MERV 7 to MERV 11 or better	35 to 60% or better	4 to 10	25 to 45 fpm, 0.75 to 2 cfm/ft²	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh
Radio & television stations	MERV 7 or better	35% or better	15 t0 40	below 25 fpm @ 12' above floor	74 to 78^•F 30 to 40% rh	74 to 78^•F 40 to 55% rh	Constant temperature & humidity required
Restaurants	MERV 7 or better	35% or better	8 to 12	25 to 30 fpm	70 to 74^•F 20 to 30% rh	74 to 78^•F 55 to 60% rh
Shipping docks	MERV 5	10 to 15%	8 to 12	25 to 30 fpm @ 6' above floor	70 to 74^•F 20 to 30% rh	74 to 78^•F 50 to 60% rh	Positive air pressure required in waiting area
Telephone terminal rooms	MERV 13 or better	85% or better	8 to 20	25 to 35 fpm	72 to 78^•F 40 to 50% rh	72 to 78^•F 50 to 55% rh	Constant temperature & humidity required
Warehouses	MERV 5 to 7	10 to 35%	1 to 4	N/A	Inside design temperature often depends on materials stored

This table shows design criteria differences between various commercial and public buildings. It should not be used as the sole source for design criteria. Each type of data contained here can be determined from the ASHRAE Handbooks and Standards. Consult governing codes to determine minimum allowable requirements. Outside air requirements may be reduced if high-efficiency adsorption equipment or other odor- or gas-removal equipment is used. See ASHRAE Standard 62 for calculation procedures. Also see Chapter 45 in ASHRAE Applications Handbook and Chapter 13 of the 2001 ASHRAE Handbook—Fundamentals.

^a Food in these areas is often eaten more quickly than in a restaurant; therefore, turnover of diners is much faster. Because diners seldom remain for long periods, they do not require the degree of comfort necessary in restaurants. Thus, it may be possible to lower design criteria standards and still provide reasonably comfortable conditions. Although space conditions of 80°F and 50 rh may be satisfactory for patrons when it is 95°F and 50 rh outside, inside conditions of78°F and 40 rh are better.

^b Usually determined by kitchen hood requirements.

^c Methods for removal of chemical pollutants must also be considered.

^d Also includes service stations

Information on ASHRAE may be found at www.ashrae.org