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Building Code Title 27 Subchapter 6 Title 27 / Subchapter 6
163
SUBCHAPTER 6
MEANS OF EGRESS
TABLE OF CONTENTS
[Sub-Art.
Art.
or Sec.]*
or Sec.

**
[600.0]
Art. 1
General
[600.1]
354
Scope
[600.2]
355
Definitions
[600.3]
356
Inadequate Exits for Existing
Structures
[601.0]
Art. 2
Determination of Exit
Requirements
[601.1]
357
Exit Requirements
[601.2]
358
Occupant Load
[601.3]
359
Capacity of Exits
[601.4]
360
Travel Distance
[602.0]
Art. 3
Location of Exits
[602.1]
361
Arrangement
[602.2]
362
Tenant Spaces
[602.3]
363
Remote Location
[602.4]
364
Exit Discharge
[603.0]
Art. 4
Number of Exits
[603.1]
365
Egress from Rooms and
Spaces
[603.2]
366
Exits from Floors
[603.3]
367
Exit Reduction
[604.0]
Art. 5
Access Requirements and
Exit Types
[604.1]
368
General
[604.2]
369
Corridors
[604.3]
370
Exit Passageways
[604.4]
371
Doors
[604.5]
372
Area of Refuge
[604.6]
373
Horizontal Exits
[604.7]
374
Supplemental Vertical Exits
[604.8]
375
Interior Stairs
[604.9]
376
Exterior Stairs
376.1
Fire Tower
[604.10]
377
Ramps
[604.11]
378
Escalators
[604.12]
379
Moving Walkways
[604.13]
380
Fire Escapes
[605.0]
Art. 6
Exit Lighting
[605.1]
381
Requirements
[605.2]
382
Power Source
[606.0]
Art. 7
Exit Signs and Other
Markings
[606.1]
383
Requirements
383.1
Additional Requirements for
High Rise Office Buildings
and Occupancy Group E
High Rise Buildings
[606.2]
384
Power Source
[606.3]
385
Exit Sign Design
[606.4]
386
Directional Sign Design
[606.5]
387
False Exits
[607.0]
Art. 8
Exit Signs for Existing Buildings
[607.1] 388
Retroactive Provisions
[607.2]
389
Designation of Required Means of
Egress
[608.0]
Art. 9
Stair and Elevator Signs
[608.1]
390
Applicability
[608.2]
391
Signs at Elevator Landings
[608.3]
392
Floor Numbering Signs
[608.4]
393
Stair and Elevator
Identification Signs
[608.5]
394
Stair Re-entry Signs in Office
Buildings
[608.6]
395
Materials for Signs
[608.7]
396
Signs in Existing Buildings
[609.0]
Art. 10
Signs in Sleeping Rooms
[609.1]
396.1
Applicability
[609.2]
396.2
Requirements
[609.3]
396.3
Retroactive Requirements
[610.0]
Art.11
Emergency Power
[610.1]
396.4
Requirements
[610.2]
396.5
Registration
[610.3]
396.6
Applicability
*
"C26" omitted from section numbers in this column.
**
"27" omitted from section numbers in this column.
LIST OF TABLES
Table No.
6-1 Determination of Exit and Access Requirements
6-2 Occupant Load Requirements Net Area Table
6-3 Maximum Occupant load-Spaces with One Door
6-4 Maximum Riser Height and Minimum Tread Width
ARTICLE 1 GENERAL
§[C26-600.1] 27-354 Scope. -
The provisions of this subchapter shall control the design,
construction, protection, location,
arrangement and
maintenance of required exit
facilities to provide safe means of
egress from all buildings hereafter erected, altered or
changed in occupancy, except that exit requirements for
special uses and occupancies, as provided in subchapters
seven and eight of this chapter, shall take precedence over the
provisions of this subchapter and except further that
buildings in existence on December sixth, nineteen hundred
sixty-eight shall comply with the applicable requirements of
section 27-356 of this article, section 27-371 of article five
of this subchapter and articles eight and nine of this
subchapter.
revision: October 1, 2004 Title 27 / Subchapter 6
164
§[C26-600.2] 27-355 Definitions. - For definitions to be
used in the interpretation of this subchapter, see
subchapter two of this chapter.
§[C26-600.3] 27-356 Inadequate exits for existing structures.-
Every structure existing on December sixth, nineteen
hundred sixty-eight which is not provided with exit
facilities as prescribed in this code, and in which the exit
facilities are, in the opinion of the commissioner,
inadequate for the safety of the occupants, shall be
provided with such means of egress or fire protection as
the commissioner shall direct.
ARTICLE 2 DETERMINATION OF EXIT
REQUIREMENTS
§[C26-601.1] 27-357 Exit requirements. -
The determination of exit requirements for a building shall
be based upon the occupancy group classification of the
building, the number of occupants, the floor area, the travel
distance to an exit, and the capacity of the exits, as provided
in table 6-1 and herein. Every floor of a building shall be
provided with exit facilities for its occupant load. The
occupant loads of floors shall not be cumulative for the
purpose of designing vertical exits, except where one floor
is used by another as a means of egress. Vertical exits
provided from any floor above grade may serve simultaneously
all floors above grade, and vertical exits provided from any
floor below grade may serve simultaneously all floors
below grade.
(a) Mixed occupancy. - When a building is classified in
more than one occupancy group in accordance with the
provisions of section 27-239 of article two of subchapter
three of this chapter, the exit requirements for the entire
building shall be determined on the basis of the occupancy
group having the strictest exit requirements, or the exit
requirements for each building section shall be
determined separately.
(b) Incidental occupancies. - When a building contains
incidental occupancies classified in occupancy groups
other than that under which the building is classified, the
exit requirements for the floor on which such
occupancies occur shall be based upon those of the
occupancy group under which the building is classified;
but the access and exit requirements for the incidental
occupancy shall be based upon the occupancy group
classification of the incidental occupancy.
(c) Multiple occupancy or use. - Where a building,
floor, or space is used for multiple purposes involving
different activities at different times, that occupancy
involving the greatest number of occupants shall be
used in determining the exit requirements.
***(d) Building access. - All buildings classified in
other than occupancy groups A, mechanical and electrical
equipment rooms and boiler and furnace rooms of D-2 or J-3
shall have at least one primary entrance accessible to and usable
by individuals who use wheelchairs. Such entrance shall
provide access to a level that makes elevators
available in buildings where elevators are provided.
Where ramps are used to comply with this requirement, they
shall have a slope not greater than one in
twelve and shall
otherwise conform to the
provisions of section 27-377 and
reference standard RS 4-6.
The commissioner may waive the requirements of this
section in the alteration of buildings existing on the
effective date of this code in accordance with section
27.292 of this code.
***Local Law 58-1987.
As enacted but "27-292" probably intended.
§[C26-601.2] 27-358 Occupant load. -
The number of occupants for whom exit facilities shall be
provided shall be established either (1) by the actual
number of occupants for whom each occupied space,
floor, or building, as the case may be, is designed, or (2)
by using the appropriate occupant-area ratios from table
6-2, whichever is larger. The occupant load of any space
shall include the occupant load of all spaces that
discharge through it in order to gain access to an exit.
(a) Unlisted occupancies. - Where data regarding the sq.
ft. per person for an occupancy is not listed in table 6-2, the
occupant load shall be established by an architect or
engineer, subject to the approval of the commissioner.
(b) Modifications. -
(1) When the actual occupant load of any space will be
significantly lower than that listed in table 6-2, the
commissioner may establish a lower basis for the
determination of the occupant load.
(2). When a building existing on December sixth, nineteen
hundred sixty-eight is altered or changed in occupancy or
use so as to require enlarged exit facilities, the commissioner
may authorize the alteration or change in occupancy or
use without an enlargement of exit facilities, provided
the occupant load is limited to that accommodated by
the existing exit facilities as determined by the
provisions of this code, and the building or space is
posted accordingly with a sign. Such signs shall be at
least twelve inches in width and sixteen inches in
height. The lettering shall be red on a white
background. The letters shall be not less than one inch
high and the numerals not less than one and one-
quarter inches high.
(c) Nonsimultaneous occupancy. - The occupant load of
toilets, locker rooms, meeting rooms, storage rooms,
employee cafeterias, and similar rooms or spaces that are
not occupied at the same time as other rooms or spaces on
the same floor of a building, may be omitted from the
occupant load calculation of the floor on which they are
located to the extent that such spaces serve occupied
rooms on the same floor.
revision: October 1, 2004 Title 27 / Subchapter 6
165
TABLE 6-1 DETERMINATI