Door Clear Width

OCCUPANCY TYPE (new building)	CODE REF.	DOOR minimum CLEAR WIDTH
AMBULATORY (Sprinklered and Not Sprinklered)	NFPA 101, 2015 (20.2.3.4)	810 mm. required for diagnostics or treatment area such as x-ray, surgical or physical therapy.
BUSINESS (Sprinklered and Not Sprinklered)	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)
HEALTHCARE	NFPA 101, 2015 (18.2.3.6)	810 mm. required for psychiatric hospitals and limited care facilities 1055 mm. required for hospital and nursing homes
HEALTHCARE	NFPA 101, 2015 (18.2.3.7)	810mm. required for exit stair enclosure 810mm. required for newborn nurseries not less than one of the pair of doors shall be 810mm.
EDUCATIONAL	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)
ONE & TWO FAMILY DWELLINGS	NFPA 101, 2015 (24.2.4.1)	710 mm. required for doors in the path of travel of a mean of escape and in room <6.5 sqm 610 mm. for Bathroom <6.5 sqm
HOTELS AND DORMITORIES	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)
APARTMENTS	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)
MERCANTILE	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)
STORAGE	NFPA 101, 2015 (7.3.4.1 [2])	915 mm. required for any means of egress or calculate using table 7.3.3.1 (capacity factor)

In determining the units of exit width for a doorway, only the clear width of the doorway when the door is in the full open position shall be measured. Clear width shall be the net, unobstructed width of the door opening without projections into such width.

DOOR MAXIMUM WIDTH:

IBC limits the maximum width of egress doors – doors in a means of egress may not be more than 1218mm wide.
NFPA 101 no longer limits the maximum width of egress doors – past editions limited the width to 1218mm. A proposal has been submitted to remove the 1218mm limitation from the 2018 IBC, but it has not yet been approved.

DOOR MINIMUM WIDTH: (check NFPA 101-7.2.1.2.3) Notes:

Code Reference used is NFPA-101 2012 edition unless otherwise noted.
These information is not complete and intended to be used as quick references only, always refer to NFPA or your local codes for complete information.

Table 7.3.3.1 Egress Capacity Factors
	Stairways (width per person)	Ramps, Aisles and Corridors (width per person)
Area	mm	mm

Board and Care	10	5
Health Care (sprinklered)	7.6	5
Health Care (nonsprinklered)	15	13
High Hazard Contents	18	10
All Others	7.6	5

Resources: http://idighardware.com/2009/07/clear-opening-width/