reglab/statecodes huggingface dataset:
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.1 - Design occupant load

Current through Register 1525, July 5, 2024
In determining
means of egress
requirements, the number of occupants for whom
means of egress
facilities shall be provided shall be determined in accordance with this
				  section. Where occupants from accessory areas egress through a primary space,
				  the calculated
occupant load
for the primary space shall
				  include the total
occupant load
of the primary space plus the
				  number of occupants egressing through it from the accessory area.
1004.1.1
Areas without fixed
				seating.
The number of occupants shall be computed at the rate of one
				occupant per unit of area as prescribed in Table 1004.1.1. For areas without
				fixed seating, the
occupant load
shall not be less than that
				number determined by dividing the floor area under consideration by the
				occupant per unit of area factor assigned to the occupancy as set forth in
				Table 1004.1.1. Where an intended use is not listed in Table 1004.1.1, the
building official
shall establish a use based on a listed use
				that most nearly resembles the intended use.
Exception:
Where
approved
by
				  the
building official
, the actual number of occupants for whom
				  each occupied space, floor or building is designed, although less than those
				  determined by calculation, shall be permitted to be used in the determination
				  of the design
occupant load
.
TABLE 1004.1.1 MAXIMUM FLOOR AREA ALLOWANCES PER
				  OCCUPANT
FUNCTION OF SPACE
FLOOR AREA IN SQ. FT. PER OCCUPANT
Accessory storage areas, mechanical equipment room
300 gross
Agricultural building
300 gross
Aircraft hangars
500 gross
Airport terminal
Baggage claim
20 gross
Baggage handling
300 gross
Concourse
100 gross
Waiting areas
15 gross
Assembly
Gaming floors (keno, slots, etc.)
11 gross
Assembly with fixed seats
See Section 1004.7
Assembly without fixed seats
Concentrated (chairs only-not fixed)
7 net
Standing space
5 net
Unconcentrated (tables and chairs)
15 net
Bowling centers, allow 5 persons for each lane
							 including 15 feet of runway, and for additional areas
7 net
Business areas
100 gross
Courtrooms-other than fixed seating areas
40 net
Day care
35 net
Dormitories
50 gross
Educational
Classroom area
20 net
Shops and other vocational room areas
50 net
Exercise rooms
50 gross
H-5 Fabrication and manufacturing areas
200 gross
Industrial areas
100 gross
Institutional areas
Inpatient treatment areas
240 gross
Outpatient areas
100 gross
Sleeping areas
120 gross
Kitchens, commercial
200 gross
Library
Reading rooms
50 net
Stack area
100 gross
Locker rooms
50 gross
Mercantile
Areas on other floors
60 gross
Basement and grade floor areas
30 gross
Storage, stock, shipping areas
300 gross
Parking garages
200 gross
Residential
200 gross
Skating rinks, swimming pools
Rink and pool
50 gross
Decks
15 gross
Stages and platforms
15 net
Warehouses
500 gross
For SI: 1 square foot = 0.0929
							 m2.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.2 - Increased occupant load

Current through Register 1525, July 5, 2024
The
occupant load
permitted in any
				  building, or portion thereof, is permitted to be increased from that number
				  established for the occupancies in Table 1004.1.1, provided that all other
				  requirements of the code are also met based on such modified number and the
occupant load
does not exceed one occupant per 7 square feet
				  (0.65 m2) of occupiable floor space. Where required
				  by the
building official
, an
approved aisle
,
				  seating or fixed equipment diagram substantiating any increase in
occupant load
shall be submitted. Where required by the
building official
, such diagram shall be
				  posted.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.3 - Posting of occupant load

Current through Register 1525, July 5, 2024
Every room or space that is an assembly occupancy shall have
				  the
occupant load
of the room or space posted in a conspicuous
				  place, near the main
exit
or
exit access
doorway
from the room or space. Posted signs shall be of an
approved
legible permanent design and shall be maintained by
				  the owner or authorized agent.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.4 - Exiting from multiple levels

Current through Register 1525, July 5, 2024
Where
exits
serve more than one floor, only
				  the
occupant load
of each floor considered individually shall
				  be used in computing the required capacity of the
exits
at
				  that floor, provided that the
exit
capacity shall not decrease
				  in the direction of egress travel.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.5 - Egress convergence

Current through Register 1525, July 5, 2024
Where
means of egress
from floors above and
				  below converge at an intermediate level, the capacity of the
means of
				  egress
from the point of convergence shall not be less than the sum of
				  the two floors.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.6 - Mezzanine levels

Current through Register 1525, July 5, 2024
The
occupant load
of a
mezzanine
level with egress onto a room or area below shall be
				  added to that room or area's
occupant load
, and the capacity
				  of the exits shall be designed for the total
occupant load
thus established.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.7 - Fixed seating

Current through Register 1525, July 5, 2024
For areas having fixed seats and
aisles
,
				  the
occupant load
shall be determined by the number of fixed
				  seats installed therein. The
occupant load
for areas in which
				  fixed seating is not installed, such as waiting spaces and
wheelchair
				  spaces
, shall be determined in accordance with Section 1004.1.1 and
				  added to the number of fixed seats.
For areas having fixed seating without dividing arms, the
occupant load
shall not be less than the number of seats based
				  on one person for each 18 inches (457 mm) of seating length.
The
occupant load
of seating booths shall be
				  based on one person for each 24 inches (610 mm) of booth seat length measured
				  at the backrest of the seating booth.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.8 - Outdoor areas

Current through Register 1525, July 5, 2024
Yards, patios, courts and similar outdoor areas accessible
				  to and usable by the building occupants shall be provided with
means of
				  egress
as required by this chapter. The
occupant load
of such outdoor areas shall be assigned by the
building
				  official
in accordance with the anticipated use. Where outdoor areas
				  are to be used by persons in addition to the occupants of the building, and the
				  path of egress travel from the outdoor areas passes through the building,
means of egress
requirements for the building shall be based
				  on the sum of the
occupant loads
of the building plus the
				  outdoor areas.
Exceptions:
1. Outdoor areas used exclusively for service
				of the building need only have one
means of egress
.
2. Both outdoor areas associated with Group
				R-3 and individual dwelling units of Group R-2.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1004 - OCCUPANT LOAD › Subsection 1004.9 - Multiple occupancies

Current through Register 1525, July 5, 2024
Where a building contains two or more occupancies, the
means of egress
requirements shall apply to each portion of
				  the building based on the occupancy of that space. Where two or more
				  occupancies utilize portions of the same
means of egress
system, those egress components shall meet the more stringent requirements of
				  all occupancies that are served.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1005 - EGRESS WIDTH › Subsection 1005.1 - Minimum required egress width

Current through Register 1525, July 5, 2024
The
means of egress
width shall not be less
				  than required by this section. The total width of
means of
				  egress
in inches (mm) shall not be less than the total
occupant load
served by the
means of egress
multiplied by 0.3 inch (7.62 mm) per occupant for stairways and by 0.2 inch
				  (5.08 mm) per occupant for other egress components. The width shall not be less
				  than specified elsewhere in this code. Multiple
means of
				  egress
shall be sized such that the loss of any one
means of
				  egress
shall not reduce the available capacity to less than 50 percent
				  of the required capacity. The maximum capacity required from any
story
of a building shall be maintained to the termination of
				  the
means of egress
.
Exception:
Means of egress
complying with Section 1028.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1005 - EGRESS WIDTH › Subsection 1005.2 - Door encroachment

Current through Register 1525, July 5, 2024
Doors, when fully opened, and handrails shall not reduce the
				  required
means of egress
width by more than 7 inches (178 mm).
				  Doors in any position shall not reduce the required width by more than
				  one-half. Other nonstructural projections such as trim and similar decorative
				  features shall be permitted to project into the required width a maximum of
				  11/2 inches (38 mm) on each
				  side.
Exception:
The restrictions on a door swing
				  shall not apply to doors within individual dwelling units and sleeping units of
				  Group R-2 and dwelling units of Group R-3.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1005 - EGRESS WIDTH › Subsection 1005.3 - Door hardware encroachment

Current through Register 1525, July 5, 2024
Surface-mounted latch release hardware shall be exempt from
				  inclusion in the 7-inch (178 mm) maximum projection requirement of Section
				  1005.2 when:
1. The hardware is
				mounted to the side of the door facing the corridor width when the door is in
				the open position; and
2. The
				hardware is mounted not less than 34 inches (865 mm) or more than 48 inches
				(1220 mm) above the finished floor.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1006 - MEANS OF EGRESS ILLUMINATION › Subsection 1006.1 - Illumination required

Current through Register 1525, July 5, 2024
The
means of egress
, including the
exit discharge
, shall be illuminated at all times the building
				  space served by the
means of egress
is occupied.
Exceptions:
1. Occupancies in Group U.
2.
Aisle accessways
in Group
				A.
3. Dwelling units and sleeping
				units in Groups R-1, R-2 and R-3.
4. Sleeping units of Group I
				occupancies.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1006 - MEANS OF EGRESS ILLUMINATION › Subsection 1006.2 - Illumination level

Current through Register 1525, July 5, 2024
The
means of egress
illumination level
				  shall not be less than 1 footcandle (11 lux) at the walking surface.
Exception:
For auditoriums, theaters, concert or
				  opera halls and similar assembly occupancies, the illumination at the walking
				  surface is permitted to be reduced during performances to not less than 0.2
				  footcandle (2.15 lux), provided that the required illumination is automatically
				  restored upon activation of a premises' fire alarm system where such system is
				  provided.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1006 - MEANS OF EGRESS ILLUMINATION › Subsection 1006.3 - Illumination emergency power

Current through Register 1525, July 5, 2024
The power supply for
means of egress
illumination shall normally be provided by the premises' electrical
				  supply.
In the event of power supply failure, an emergency electrical
				  system shall automatically illuminate all of the following areas:
1.
Aisles
and unenclosed
				egress
stairways
in rooms and spaces that require two or more
means of egress
.
2.
Corridors
,
exit
				enclosures
and
exit passageways
in buildings required
				to have two or more
exits
.
3. Exterior egress components at other than
				their
levels of
exit discharge
until
exit discharge
is accomplished for buildings required to have
				two or more
exits
.
4. Interior
exit discharge
elements, as permitted in Section 1027.1, in buildings required to have two or
				more
exits
.
5.
				Exterior landings as required by Section 1008.1.6 for
exit
				discharge
doorways in buildings required to have two or more
exits
.
The emergency power system shall provide power for a duration
				  of not less than 90 minutes and shall consist of storage batteries, unit
				  equipment or an on-site generator. The installation of the emergency power
				  system shall be in accordance with Chapter 27.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1006 - MEANS OF EGRESS ILLUMINATION › Subsection 1006.4 - Performance of system

Current through Register 1525, July 5, 2024
Emergency lighting facilities shall be arranged to provide
				  initial illumination that is at least an average of 1 footcandle (11 lux) and a
				  minimum at any point of 0.1 footcandle (1 lux) measured along the path of
				  egress at floor level. Illumination levels shall be permitted to decline to 0.6
				  footcandle (6 lux) average and a minimum at any point of 0.06 footcandle (0.6
				  lux) at the end of the emergency lighting time duration. A maximum-to-minimum
				  illumination uniformity ratio of 40 to 1 shall not be
				  exceeded.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.1 - Accessible means of egress required

Current through Register 1525, July 5, 2024
Accessible
means of egress
shall comply with this section.
Accessible
spaces shall be
				  provided with not less than one
accessible means of egress
.
				  Where more than one
means of egress
are required by Section
				  1015.1 or 1021.1 from any
accessible
space, each
accessible
portion of the space shall be served by not less
				  than two
accessible means of egress
.
Exceptions:
1.
Accessible
means
				of egress
are not required in alterations to existing
				buildings.
2. One
accessible means of egress
is required from an
accessible
mezzanine
level in accordance with
				Section 1007.3, 1007.4 or 1007.5.
3. In assembly areas with sloped or stepped
aisles
, one
accessible means of egress
is
				permitted where the common path of travel is
accessible
and
				meets the requirements in Section 1028.8.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.2 - Continuity and components

Current through Register 1525, July 5, 2024
Each required
accessible means of egress
shall be continuous to a
public way
and shall consist of one
				  or more of the following components:
1.
Accessible routes
complying with Section 1104.
2.
Interior
exit
stairways
complying with Sections 1007.3 and 1022.
3.
Exterior
exit
stairways
complying with Sections 1007.3
				and 1026.
4. Elevators complying
				with Section 1007.4.
5. Platform
				lifts complying with Section 1007.5.
6.
Horizontal exits
complying with Section 1025.
7.
Ramps
complying with Section 1010.
8.
Areas of refuge
complying
				with Section 1007.6.
Exceptions:
1. Where the
exit discharge
is not
accessible
, an exterior area for assisted rescue must
				be provided in accordance with Section 1007.7.
2. Where the
exit
stairway
is open to the exterior, the
accessible means
				of egress
shall include either an
area of refuge
in
				accordance with Section 1007.6 or an exterior area for assisted rescue in
				accordance with Section 1007.7.
1007.2.1
Elevators required.
In buildings where a required
accessible
floor is four or more stories above or below a
level of exit discharge
, at least one required
accessible means of egress
shall be an elevator complying with
				Section 1007.4.
Exceptions:
1. In buildings equipped throughout with an
automatic sprinkler system
installed in accordance with
				Section 903.3.1.1 or 903.3.1.2, the elevator shall not be required on floors
				provided with a
horizontal
exit
and located
				at or above the
levels of
exit
				discharge
.
2. In buildings
				equipped throughout with an
automatic sprinkler system
installed in accordance with Section 903.3.1.1 or 903.3.1.2, the elevator shall
				not be required on floors provided with a ramp conforming to the provisions of
				Section 1010.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.3 - Stairways

Current through Register 1525, July 5, 2024
In order to be considered part of an
accessible
				  means of egress
, an
exit access stairway
as permitted
				  by Section 1016.1 or
exit
stairway
shall have
				  a clear width of 48 inches (1219 mm) minimum between handrails and shall either
				  incorporate an
area of refuge
within an enlarged floor-level
				  landing or shall be accessed from either an
area of refuge
complying with Section 1007.6 or a
horizontal
exit
.
Exceptions:
1. The
area of refuge
is not
				required at open
exit access
or
exit
stairways
as permitted by Sections 1016.1 and 1022.1 in
				buildings that are equipped throughout with an
automatic sprinkler
				system
installed in accordance with Section 903.3.1.1 or
				903.3.1.2.
2. The clear width of 48
				inches (1219 mm) between
handrails
is not required at
exit access
stairway
as permitted by Section
				1016.1 or
exit
stairways
in buildings
				equipped throughout with an
automatic sprinkler system
installed in accordance with Section 903.3.1.1 or 903.3.1.2.
3.
Areas of refuge
are not
				required at
exit
stairways
in buildings
				equipped throughout with an
automatic sprinkler system
installed in accordance with Section 903.3.1.1 or 903.3.1.2.
4. The clear width of 48 inches (1219 mm)
				between
handrails
is not required for
exit
stairways
accessed from a
horizontal
exit
.
5.
Areas of refuge
are not required at
exit
stairways
serving
open parking
				garages
.
6.
Areas
				of refuge
are not required for smoke protected seating areas complying
				with Section 1028.6.2.
7. The
areas of refuge
are not required in Group R-2
				occupancies.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.4 - Elevators

Current through Register 1525, July 5, 2024
In order to be considered part of an
accessible
				  means of egress
, an elevator shall comply with the emergency operation
				  and signaling device requirements of Section 2.27 of ASME A17.1. Standby power
				  shall be provided in accordance with Chapter 27 and Section 3003. The elevator
				  shall be accessed from either an
area of refuge
complying with
				  Section 1007.6 or a
horizontal
exit
.
Exceptions:
1. Elevators are not required to be accessed
				from an
area of refuge
or
horizontal
exit
in
open parking garages
.
2. Elevators are not required to be accessed
				from an
area of refuge
or
horizontal exit
in
				buildings and facilities equipped throughout with an
automatic
				sprinkler system
installed in accordance with Section 903.3.1.1 or
				903.3.1.2.
3. Elevators not
				required to be located in a shaft in accordance with Section 708.2 are not
				required to be accessed from an
area of refuge
or
horizontal
exit
.
4. Elevators are not required to be accessed
				from an
area of refuge
or
horizontal
exit
for smoke protected seating areas complying with Section
				1028.6.2.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.5 - Platform lifts

Current through Register 1525, July 5, 2024
Platform (wheelchair) lifts shall not serve as part of an
accessible means of egress
, except where allowed as part of a
				  required
accessible route
in Section 1109.7, Items 1 through
				  9. Standby power shall be provided in accordance with Chapter 27 for platform
				  lifts permitted to serve as part of a
means of egress
.
1007.5.1
Openness.
Platform
				lifts on an
accessible means of egress
shall not be installed
				in a fully enclosed hoistway.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.6 - Areas of refuge

Current through Register 1525, July 5, 2024
Every required
area of refuge
shall be
accessible
from the space it serves by an
accessible
				  means of egress
. The maximum travel distance from any
accessible
space to an
area of refuge
shall
				  not exceed the travel distance permitted for the occupancy in accordance with
				  Section 1016.1. Every required
area of refuge
shall have
				  direct access to a
stairway
within an
exit
				  enclosure
complying with Sections 1007.3 and 1022 or an elevator
				  complying with Section 1007.4. Where an elevator lobby is used as an
area of refuge
, the shaft and lobby shall comply with Section
				  1022.9 for
smokeproof enclosures
except where the elevators
				  are in an
area of refuge
formed by a
horizontal
exit
or
smoke
				  barrier
.
Exceptions:
1. A
stairway
serving an
area of refuge
is not required to be enclosed where permitted
				in Sections 1016.1 and 1022.1.
2. A
smokeproof enclosure
is not required for an elevator lobby
				used as an
area of refuge
where the elevator is not required
				to be enclosed.
1007.6.1
Size.
Each
area of refuge
shall be sized to accommodate one
wheelchair space
of 30 inches by 48 inches (762 mm by 1219 mm)
				for each 200 occupants or portion thereof, based on the
occupant
				load
of the
area of refuge
and areas served by the
area of refuge
. Such
wheelchair spaces
shall
				not reduce the required
means of egress
width. Access to any
				of the required
wheelchair spaces
in an
area of
				refuge
shall not be obstructed by more than one adjoining
wheelchair space
.
1007.6.2
Separation.
Each
area of refuge
shall be separated from the remainder of the
				story by a
smoke barrier
complying with Section 710 or a
horizontal
exit
complying with Section 1025.
				Each
area of refuge
shall be designed to minimize the
				intrusion of smoke.
Exception:
Areas of refuge
located within an
exit enclosure
.
1007.6.3
Two-way communication.
Areas of refuge
shall be provided with a two-way communication
				system complying with Sections 1007.8.1 and 1007.8.2.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.7 - Exterior area for assisted rescue

Current through Register 1525, July 5, 2024
The exterior area for assisted rescue must be open to the
				  outside air and meet the requirements of Section 1007.6.1. Separation walls
				  shall comply with the requirements of Section 705 for
exterior
				  walls
. Where walls or openings are between the area for assisted
				  rescue and the interior of the building, the building
exterior
				  walls
within 10 feet (3048 mm) horizontally of a nonrated wall or
				  unprotected opening shall have a
fire-resistance rating
of not
				  less than 1 hour. Openings within such
exterior walls
shall be
				  protected by opening protectives having a
fire protection
				  rating
of not less than
				  3/4 hour. This construction
				  shall extend vertically from the ground to a point 10 feet (3048 mm) above the
				  floor level of the area for assisted rescue or to the roof line, whichever is
				  lower.
1007.7.1
Openness.
The exterior area for assisted rescue shall be at least 50
				percent open, and the open area above the guards shall be so distributed as to
				minimize the accumulation of smoke or toxic gases.
1007.7.2
Exterior exit stairway.
Exterior exit
stairways
that are part of the
means of egress
for the exterior area for assisted rescue
				shall provide a clear width of 48 inches (1219 mm) between handrails.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.8 - Two-way communication

Current through Register 1525, July 5, 2024
A two-way communication system shall be provided at the
				  elevator landing on each
accessible
floor that is one or more
				  stories above or below the
story
of
exit
				  discharge
complying with Sections 1007.8.1 and 1007.8.2.
Exceptions:
1. Two-way communication systems are not
				required at the elevator landing where the two-way communication system is
				provided within
areas of refuge
in accordance with Section
				1007.6.3.
2. Two-way communication
				systems are not required on floors provided with
exit
ramps
conforming to the provisions of Section 1010.
1007.8.1
System requirements.
Two-way communication systems shall provide communication between each required
				location and the fire command center or a central control point location
approved
by the fire department. Where the central control
				point is not constantly attended, a two-way communication system shall have a
				timed automatic telephone dial-out capability to a monitoring location or 911.
				The two-way communication system shall include both audible and visible
				signals.
1007.8.2
Directions.
Directions for the use of the two-way communication system,
				instructions for summoning assistance via the two-way communication system and
				written identification of the location shall be posted adjacent to the two-way
				communication system.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.9 - Signage

Current through Register 1525, July 5, 2024
Signage indicating special accessibility provisions shall be
				  provided as shown:
1. Each door
				providing access to an
area of refuge
from an adjacent floor
				area shall be identified by a sign stating: AREA OF REFUGE.
2. Each door providing access to an exterior
				area for assisted rescue shall be identified by a sign stating: EXTERIOR AREA
				FOR ASSISTED RESCUE.
Signage shall comply with the ICC A117.1 requirements for
				  visual characters and include the International Symbol of Accessibility. Where
				  exit sign illumination is required by Section 1011.2, the signs shall be
				  illuminated. Additionally, tactile signage complying with ICC A117.1 shall be
				  located at each door to an
area of refuge
and exterior area
				  for assisted rescue in accordance with Section 1011.3.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.10 - Directional signage

Current through Register 1525, July 5, 2024
Direction signage indicating the location of the other
means of egress
and which are
accessible means of
				  egress
shall be provided at the following:
1. At
exits
serving a
				required
accessible
space but not providing an
approved accessible means of egress
.
2. At elevator landings.
3. Within
areas of
				refuge
.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1007 - ACCESSIBLE MEANS OF EGRESS › Subsection 1007.11 - Instructions

Current through Register 1525, July 5, 2024
In
areas of refuge
and exterior areas for
				  assisted rescue, instructions on the use of the area under emergency conditions
				  shall be posted. The instructions shall include all of the following:
1. Persons able to use the exit stairway do
				so as soon as possible, unless they are assisting others.
2. Information on planned availability of
				assistance in the use of stairs or supervised operation of elevators and how to
				summon such assistance.
3.
				Directions for use of the two-way communications system where
				provided.
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 1008.2 - Gates

Current through Register 1525, July 5, 2024
Gates serving the means of egress system shall comply with
				  the requirements of this section. Gates used as a component in a
means
				  of egress
shall conform to the applicable requirements for
				  doors.
Exception:
Horizontal sliding or swinging gates
				  exceeding the 4-foot (1219 mm) maximum leaf width limitation are permitted in
				  fences and walls surrounding a stadium.
1008.2.1
Stadiums.
Panic
				hardware is not required on gates surrounding stadiums where such gates are
				under constant immediate supervision while the public is present, and where
				safe dispersal areas based on 3 square feet (0.28
				m2) per occupant are located between the fence and
				enclosed space. Such required safe dispersal areas shall not be located less
				than 50 feet (15 240 mm) from the enclosed space. See Section 1027.6 for
means of egress
from safe dispersal areas.
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 1008.3 - Turnstiles

Current through Register 1525, July 5, 2024
Turnstiles or similar devices that restrict travel to one
				  direction shall not be placed so as to obstruct any required
means of
				  egress
.
Exception:
Each turnstile or similar device
				  shall be credited with no more than a 50-person capacity where all of the
				  following provisions are met:
1. Each
				device shall turn free in the direction of egress travel when primary power is
				lost, and upon the manual release by an employee in the area.
2. Such devices are not given credit for more
				than 50 percent of the required egress capacity.
3. Each device is not more than 39 inches
				(991 mm) high.
4. Each device has
				at least 161/2 inches (419
				mm) clear width at and below a height of 39 inches (991 mm) and at least 22
				inches (559 mm) clear width at heights above 39 inches (991 mm).
Where located as part of an
accessible
				  route
, turnstiles shall have at least 36 inches (914 mm) clear at and
				  below a height of 34 inches (864 mm), at least 32 inches (813 mm) clear width
				  between 34 inches (864 mm) and 80 inches (2032 mm) and shall consist of a
				  mechanism other than a revolving device.
1008.3.1
High turnstile.
Turnstiles more than 39 inches (991 mm) high shall meet the requirements for
				revolving doors.
1008.3.2
Additional door.
Where serving an
occupant load
greater
				than 300, each turnstile that is not portable shall have a side-hinged swinging
				door which conforms to Section 1008.1 within 50 feet (15 240
				mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.1 - Stairway width

Current through Register 1525, July 5, 2024
The width of
stairways
shall be determined
				  as specified in Section 1005.1, but such width shall not be less than 44 inches
				  (1118 mm). See Section 1007.3 for
accessible
means of
				  egress
stairways
.
Exceptions:
1.
Stairways
serving an
occupant load
of less than 50 shall have a width of not less
				than 36 inches (914 mm).
2.
Spiral
stairways
as provided for in Section
				1009.9.
3.
Aisle
stairs
complying with Section 1028.
4. Where an incline platform lift or stairway
				chairlift is installed on
stairways
serving occupancies in
				Group R-3, or within dwelling units in occupancies in Group R-2, a clear
				passage width not less than 20 inches (508 mm) shall be provided. If the seat
				and platform can be folded when not in use, the distance shall be measured from
				the folded position.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.2 - Headroom

Current through Register 1525, July 5, 2024
Stairways
shall have a minimum headroom
				  clearance of 80 inches (2032 mm) measured vertically from a line connecting the
				  edge of the
nosings
. Such headroom shall be continuous above
				  the
stairway
to the point where the line intersects the
				  landing below, one tread depth beyond the bottom riser. The minimum clearance
				  shall be maintained the full width of the
stairway
and
				  landing.
Exceptions:
1.
Spiral
stairways
complying with Section 1009.9 are permitted a
				78-inch (1981 mm) headroom clearance.
2. In Group R-3 occupancies; within dwelling
				units in Group R-2 occupancies; and in Group U occupancies that are accessory
				to a Group R-3 occupancy or accessory to individual dwelling units in Group R-2
				occupancies; where the
nosings
of treads at the side of a
flight
extend under the edge of a floor opening through which
				the
stair
passes, the floor opening shall be allowed to
				project horizontally into the required headroom a maximum of
				43/4 inches (121
				mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.3 - Walkline

Current through Register 1525, July 5, 2024
The walkline across
winder
treads shall be
				  concentric to the direction of travel through the turn and located 12 inches
				  (305 mm) from the side where the
winders
are narrower. The
				  12-inch (305 mm) dimension shall be measured from the widest point of the clear
stair
width at the walking surface of the
winder
. If
winders
are adjacent within the
flight
, the point of the widest clear
stair
width of the adjacent
winders
shall be used.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.4 - Stair treads and risers

Current through Register 1525, July 5, 2024
Stair
treads and risers shall comply with
				  Sections 1009.4.1 through 1009.4.5.
1009.4.1
Dimension reference
				surfaces.
For the purpose of this section, all dimensions are exclusive
				of carpets, rugs or runners.
1009.4.2
Riser height and tread
				depth.
Stair
riser heights shall be 7 inches (178 mm)
				maximum and 4 inches (102 mm) minimum. The riser height shall be measured
				vertically between the leading edges of adjacent treads. Rectangular tread
				depths shall be 11 inches (279 mm) minimum measured horizontally between the
				vertical planes of the foremost projection of adjacent treads and at a right
				angle to the tread's leading edge.
Winder
treads shall have a
				minimum tread depth of 11 inches (279 mm) measured between the vertical planes
				of the foremost projection of adjacent treads at the intersections with the
				walkline and a minimum tread depth of 10 inches (254 mm) within the clear width
				of the
stair
.
Exceptions:
1.
Alternating tread devices
in accordance with Section 1009.10.
2. Ship ladders in accordance with Section
				1009.11.
3.
Spiral
stairways
in accordance with Section 1009.9.
4.
Aisle
stairs
in assembly seating areas where the
stair
pitch or slope is set, for sightline reasons, by the
				slope of the adjacent seating area in accordance with Section
				1028.11.2.
5. In Group R-3
				occupancies; within dwelling units in Group R-2 occupancies; and in Group U
				occupancies that are accessory to a Group R-3 occupancy or accessory to
				individual dwelling units in Group R-2 occupancies; the maximum riser height
				shall be 73/4 inches (197
				mm); the minimum tread depth shall be 10 inches (254 mm); the minimum
winder
tread depth at the walkline shall be 10 inches (254
				mm); and the minimum
winder
tread depth shall be 6 inches (152
				mm). A
nosing
not less than
				3/4 inch (19.1 mm) but not
				more than 11/4 inches (32 mm)
				shall be provided on
stairways
with solid risers where the
				tread depth is less than 11 inches (279 mm).
6. See Section 3404.1 for the replacement of
				existing
stairways
.
7. In Group I-3 facilities,
stairways
providing access to guard towers, observation
				stations and control rooms, not more than 250 square feet (23
				m2) in area, shall be permitted to have a maximum
				riser height of 8 inches (203 mm) and a minimum tread depth of 9 inches (229
				mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.5 - Stairway landings

Current through Register 1525, July 5, 2024
There shall be a floor or landing at the top and bottom of
				  each
stairway
. The width of landings shall not be less than
				  the width of
stairways
they serve. Every landing shall have a
				  minimum dimension measured in the direction of travel equal to the width of the
stairway
. Such dimension need not exceed 48 inches (1219 mm)
				  where the
stairway
has a straight run. Doors opening onto a
				  landing shall not reduce the landing to less than one-half the required width.
				  When fully open, the door shall not project more than 7 inches (178 mm) into a
				  landing. When
wheelchair spaces
are required on the
stairway
landing in accordance with Section 1007.6.1, the
wheelchair space
shall not be located in the required width of
				  the landing and doors shall not swing over the
wheelchair
				  spaces
.
Exception:
Aisle
stairs
complying with Section 1028.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.6 - Stairway construction

Current through Register 1525, July 5, 2024
All
stairways
shall be built of materials
				  consistent with the types permitted for the type of construction of the
				  building, except that wood handrails shall be permitted for all types of
				  construction.
1009.6.1
Stairway
				walking surface.
The walking surface of treads and landings of a
stairway
shall not be sloped steeper than one unit vertical in
				48 units horizontal (2-percent slope) in any direction.
Stairway
treads and landings shall have a solid surface.
				Finish floor surfaces shall be securely attached.
Exceptions:
1. Openings in stair walking surfaces shall
				be a size that does not permit the passage of
				1/2-inch-diameter (12.7 mm)
				sphere. Elongated openings shall be placed so that the long dimension is
				perpendicular to the direction of travel.
2. In Group F, H and S occupancies, other
				than areas of parking structures accessible to the public, openings in treads
				and landings shall not be prohibited provided a sphere with a diameter of
				11/8 inches (29 mm) cannot
				pass through the opening.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.7 - Vertical rise

Current through Register 1525, July 5, 2024
A
flight
of
stairs
shall
				  not have a vertical rise greater than 12 feet (3658 mm) between floor levels or
				  landings.
Exceptions:
1.
Aisle
stairs
complying with Section 1028.
2.
Alternating tread devices
used as a
means of egress
shall not have a rise greater than
				20 feet (6096 mm) between floor levels or landings.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.8 - Curved stairways

Current through Register 1525, July 5, 2024
Curved
stairways
with
winder
treads shall have treads and risers in accordance with
				  Section 1009.4 and the smallest radius shall not be less than twice the
				  required width of the
stairway
.
Exception:
The radius restriction shall not
				  apply to curved
stairways
for occupancies in Group R-3 and
				  within individual dwelling units in occupancies in Group R-2.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.9 - Spiral stairways

Current through Register 1525, July 5, 2024
Spiral
stairways
are
				  permitted to be used as a component in the
means of egress
only within dwelling units or from a space not more than 250 square feet (23
				  m2) in area and serving not more than five
				  occupants, or from galleries, catwalks and
gridirons
in
				  accordance with Section 1015.6.
A
spiral
stairway
shall
				  have a 71/2-inch (191 mm)
				  minimum clear tread depth at a point 12 inches (305 mm) from the narrow edge.
				  The risers shall be sufficient to provide a headroom of 78 inches (1981 mm)
				  minimum, but riser height shall not be more than
				  91/2 inches (241 mm). The
				  minimum
stairway
clear width at and below the
handrail
shall be 26 inches (660 mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.10 - Alternating tread devices

Current through Register 1525, July 5, 2024
Alternating tread devices
are limited to an
				  element of a
means of egress
in buildings of Groups F, H and S
				  from a mezzanine not more than 250 square feet (23
				  m2) in area and which serves not more than five
				  occupants; in buildings of Group I-3 from a guard tower, observation station or
				  control room not more than 250 square feet (23 m2)
				  in area and for access to unoccupied roofs.
1009.10.1
Handrails of alternating
				tread devices.
Handrails
shall be provided on both
				sides of
alternating tread devices
and shall comply with
				Section 1012.
1009.10.2
Treads of alternating tread devices.
Alternating tread
				devices
shall have a minimum projected tread of 5 inches (127 mm), a
				minimum tread depth of 81/2
				inches (216 mm), a minimum tread width of 7 inches (178 mm) and a maximum riser
				height of 91/2 inches (241
				mm). The projected tread depth shall be measured horizontally between the
				vertical planes of the foremost projections of adjacent treads. The riser
				height shall be measured vertically between the leading edges of adjacent
				treads. The combination of riser height and projected tread depth provided
				shall result in an alternating tread device angle that complies with Section
				1002. The initial tread of the device shall begin at the same elevation as the
				platform, landing or floor surface.
Exception:
Alternating tread
				  devices
used as an element of a
means of egress
in
				  buildings from a mezzanine area not more than 250 square feet (23
				  m2) in area which serves not more than five
				  occupants shall have a minimum projected tread of
				  81/2 inches (216 mm) with a
				  minimum tread depth of 101/2
				  inches (267 mm). The rise to the next alternating tread surface should not be
				  more than 8 inches (203 mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.11 - Ship ladders

Current through Register 1525, July 5, 2024
Ship ladders are permitted to be used in Group I-3 as a
				  component of a
means of egress
to and from control rooms or
				  elevated facility observation stations not more than 250 square feet (23
				  m2) with not more than three occupants and for
				  access to unoccupied roofs.
Ship ladders shall have a minimum tread depth of 5 inches
				  (127 mm). The tread shall be projected such that the total of the tread depth
				  plus the
nosing
projection is no less than
				  81/2 inches (216 mm). The
				  maximum riser height shall be
				  91/2 inches (241 mm).
Handrails
shall be provided on both sides
				  of ship ladders. The minimum clear width at and below the
handrails
shall be 20 inches (508 mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.12 - Handrails

Current through Register 1525, July 5, 2024
Stairways
shall have
handrails
on each side and shall comply with Section 1012.
				  Where glass is used to provide the
handrail
, the
handrail
shall also comply with Section 2407.
Exceptions:
1.
Handrails
for
aisle
stairs
are not required where permitted
				by Section 1028.13.
2.
Stairways
within dwelling units, s
piral
stairways
and
aisle
stairs
serving seating only on one side are permitted to have a
handrail
on one side only.
3. Decks, patios and walkways that have a
				single change in elevation where the landing depth on each side of the change
				of elevation is greater than what is required for a landing do not require
handrails
.
4. In
				Group R-3 occupancies, a change in elevation consisting of a single riser at an
				entrance or egress door does not require
handrails
.
5. Changes in room elevations of three or
				fewer risers within dwelling units and sleeping units in Group R-2 and R-3 do
				not require
handrails
.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.13 - Stairway to roof

Current through Register 1525, July 5, 2024
In buildings four or more stories above
grade
				  plane
, one
stairway
shall extend to the roof surface,
				  unless the roof has a slope steeper than four units vertical in 12 units
				  horizontal (33-percent slope). In buildings without an occupied roof, access to
				  the roof from the top story shall be permitted to be by an
alternating
				  tread device
.
1009.13.1
Roof access.
Where a
stairway
is provided to a
				roof, access to the roof shall be provided through a
penthouse
complying with Section 1509.2.
Exception:
In buildings without an occupied
				  roof, access to the roof shall be permitted to be a roof hatch or trap door not
				  less than 16 square feet (1.5 m2) in area and having
				  a minimum dimension of 2 feet (610 mm).
1009.13.2
Protection at roof hatch
				openings.
Where the roof hatch opening providing the required access is
				located within 10 feet (3049 mm) of the roof edge, such roof access or roof
				edge shall be protected by
guards
installed in accordance with
				the provisions of Section 1013.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 10 - Means of Egress › Section 1009 - STAIRWAYS › Subsection 1009.14 - Stairway to elevator equipment

Current through Register 1525, July 5, 2024
Roofs and
penthouses
containing elevator
				  equipment that must be accessed for maintenance are required to be accessed by
				  a
stairway
.