2.2.6.7.Doors and Door Hardware

(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.