Unformatted text preview: uce the required width of the
corridor by more than one-half.
(3) Access to Exits. When more than one exit is require, they shall be so arranged to allow
going to either direction from any point in the corridor or exterior exit balcony to a separate exit, except
for dead ends permitted by this Code.
(4) Dead Ends. Corridors and exterior exit balconies with dead ends are permitted when the
dead end does not exceed 6.00 meters in length.
(5) Construction. Walls and ceiling of corrdors shall not be less than one-hour fire-resistive
construction. Provided, that this requirement shall not apply to exterior exit balconies, railings, and
corrdiors of one-storey building housing a Group E and F nor to corrdors, formed by temporary
partitions. Exterior exit balconies shall not project into an area where protected openings are required.
(6) Openings. Where corridor wall are required to be one-hour fire-resistive construction,
every interior door opening shall be protected as set forth in generally recognized and accepted
requirements for dual purpose fire exit doors. Other interior openings except ventilation louvers
equipped with approved automatic fire shutters shall be 7 millimeters thich fixed wire glass set in steel
framed. the total area of all openings other than doors, in any portion of an interior corridor wall shall
not exceed twenty-five percent of the area of the corridor wall of the room being separated from the
(e) Stairways. Except stairs or ladders used only to access equipment, every stairway serving
any building or portion thereof shall conform to the following requirements:
(1) Width. Stairways serving an occupant load of more than 50 shall not be less than 1.10
meters. Stairways serving an occupant load of 50 or less may be 900 millimeters wide. Private
stairways serving an occupant load of less than 10 may be 750 millimeters. Trim and handrails shall not
reduce the required width by more than 100 millimeters.
(2) Rise and Run. The rise of every step in a stairway shall not exceed 200 millimeters and
the run shall not be less than 250 millimeters. The maximum variations in the height of risers and the
width of treads in any one flight shall be 5 millimeters: Except, in case of private stairways serving an
occupant load of less than 10, the rise may be 200 millimeters and the run may be 250 millimeters,
except as provided in sub-paragraph (3) below.
(3) Winding Stairways. In Group A Occupancy and in private stairways in Group B
Occupancies, winders may be used if the required width of run is provided at a point not more than 300
millimeters from the side of the stairway where the treads are narrower but in no case shall any width of
run be less than 150 millimeters at any point. (4) Circular Stairways. Circular stairs may be used as an exit provided the minimum width
of run is not less than 250 millimeters. All treads in any one flight between landings shall have identical
dimensions within a 5 millimeter tolerance.
(5) Landings. E...
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This note was uploaded on 09/22/2013 for the course ARIDBE AR taught by Professor Any during the Fall '12 term at Mapúa Institute of Technology.
- Fall '12