Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1008 - DOORS, GATES AND TURNSTILES › Subsection 1008.1 - Doors

Current through Register 1525, July 5, 2024
Means of egress
doors shall meet the
				  requirements of this section. Doors serving a
means of egress
system shall meet the requirements of this section and Section 1020.2. Doors
				  provided for egress purposes in numbers greater than required by this code
				  shall meet the requirements of this section.
Means of egress
doors shall be readily
				  distinguishable from the adjacent construction and finishes such that the doors
				  are easily recognizable as doors. Mirrors or similar reflecting materials shall
				  not be used on
means of egress
doors.
Means of
				  egress
doors shall not be concealed by curtains, drapes, decorations
				  or similar materials.
1008.1.1
Size of doors.
The minimum width of each door opening shall be
				sufficient for the
occupant load
thereof and shall provide a
				clear width of 32 inches (813 mm). Clear openings of doorways with swinging
				doors shall be measured between the face of the door and the stop, with the
				door open 90 degrees (1.57 rad). Where this section requires a minimum clear
				width of 32 inches (813 mm) and a door opening includes two door leaves without
				a mullion, one leaf shall provide a clear opening width of 32 inches (813 mm).
				The maximum width of a swinging door leaf shall be 48 inches (1219 mm) nominal.
Means of egress
doors in a Group I-2 occupancy used for the
				movement of beds shall provide a clear width not less than
				411/2 inches (1054 mm). The
				height of door openings shall not be less than 80 inches (2032 mm).
Exceptions:
1. The minimum and maximum width shall not
				apply to door openings that are not part of the required
means of
				egress
in Group R-2 and R-3 occupancies.
2. Door openings to resident sleeping units
				in Group I-3 occupancies shall have a clear width of not less than 28 inches
				(711 mm).
3. Door openings to
				storage closets less than 10 square feet (0.93 m2)
				in area shall not be limited by the minimum width.
4. Width of door leaves in revolving doors
				that comply with Section 1008.1.4.1 shall not be limited.
5. Door openings within a dwelling unit or
				sleeping unit shall not be less than 78 inches (1981 mm) in height.
6. Exterior door openings in dwelling units
				and sleeping units, other than the required
exit
door, shall
				not be less than 76 inches (1930 mm) in height.
7. In other than Group R-1 occupancies, the
				minimum widths shall not apply to interior egress doors within a dwelling unit
				or sleeping unit that is not required to be an
Accessible
				unit
,
Type A unit
or
Type B
				unit
.
8. Door openings
				required to be accessible within Type B units shall have a minimum clear width
				of 31.75 inches (806 mm).
1008.1.1.1
Projections into clear width.
There shall not be projections into
				the required clear width lower than 34 inches (864 mm) above the floor or
				ground. Projections into the clear opening width between 34 inches (864 mm) and
				80 inches (2032 mm) above the floor or ground shall not exceed 4 inches (102
				mm).
Exception:
Door closers and door stops shall be
				  permitted to be 78 inches (1980 mm) minimum above the floor.