(See also Sentence 3.8.3.6.(17))
(1)
Except as required by Article 3.3.3.4. and Sentences 3.3.4.11.(11), 3.8.3.3.(1) and (2), a door that opens into or is located within a public corridor or other facility that provides access to exit from a suite shall
(a)
provide a clear opening of not less than 850 mm, if there is only one door leaf,
(b)
in a doorway with multiple leaves, have the active leaf providing a clear opening of not less than 850 mm,
(c)
not open onto a step, and
(d)
have a threshold not more than 13 mm higher than the floor surface, except where
(i)
the threshold is used to contain spillage, or
(ii)
the doorway provides access to an exterior balcony, other than a balcony required by Sentence 3.3.1.7.(2).
(2)
Except as provided in Sentences (6) and (7), a door in an access to exit shall be readily openable in travelling to an exit without requiring keys, special devices or specialized knowledge of the door opening mechanism.
(3)
Except as permitted by Sentence (4), door release hardware shall be operable by one hand and the door shall be openable with not more than one releasing operation. (See also Sentence 3.8.3.6.(4))
(4)
Except in a retirement home, an egress door from an individual dwelling unit or from a suite of residential occupancy is permitted to be provided with additional devices that require a releasing operation additional to the main door release hardware, provided the devices are readily operable from the inside without the use of keys, special devices or specialized knowledge. (See Note A-3.3.1.13.(4))
(5)
Door release hardware shall be installed not more than 900 mm and 1 100 mm above the finished floor.
(6)
An egress door in an access to exit serving a contained use area or an impeded egress zone is permitted to be equipped with locking devices, provided they can be released either locally or remotely in conformance with Sentence (8) or (9). (See Note A-3.3.1.13.(6))
(7)
A door in an access to exit is permitted to be equipped with an electromagnetic locking device conforming to Sentence 3.4.6.16.(5), except that this permission does not apply to a door
(a)
in an elementary or secondary school,
(b)
a door leading from a Group F, Division 1 occupancy, or
(c)
except as provided in Sentence (11), requiring a latch release device by Article 3.3.2.6.
(8)
Local locking devices permitted by Sentence (6) shall be operable by a key from both sides of the door.
(9)
Controls for the remote release of door locking devices permitted by Sentence (6) shall be located in an area readily available to security personnel.
(10)
Locking devices permitted by Sentence (6) that are electrically operated shall be
(a)
designed to operate on emergency power, and
(b)
capable of manual release by security personnel.
(11)
A door in an access to exit in a gaming premise is permitted to be equipped with an electromagnetic locking device conforming to Sentences 3.4.6.16.(5) and (8).