(1)
A door that provides access to exit from a room shall
(a)
provide a clear opening of not less than 750 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 750 mm,
(c)
not open onto a step, and
(d)
except as provided in Sentence (2), have a threshold not more than 13 mm higher than the surrounding finished floor surface.
(2)
The door referred to in Sentence (1) is permitted to have a threshold not more than 100 mm higher than the surrounding finished floor surface, where the threshold is used to confine
(a)
the spillage of liquids classified as dangerous goods within a room, or
(b)
animal litter within an animal containment area.
(3)
Door release hardware shall conform to Article 2.2.7.8.