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
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.

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/

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NFPA References

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Ramps

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