(1) Except as provided in Sentence (4), swinging doors in their swing shall conform to Sentences (2) and (3),
(a) at exit doors,
(b) at doors that open into or are located within a public corridor, and
(c) at doors that open into or are located within another facility that provides access to exit from a suite.
(2) When fully open, doors described in Sentence (1) shall not decrease the required exit width by more than,
(a) 100 mm in exit corridors, and
(b) 50 mm for other exit facilities.
(3) The swing of doors described in Sentence (1) shall not reduce the width of the path of travel to less than,
(a) the required exit width in exit corridors and passageways, and
(b) 750 mm on exit stairs or landings.
(4) Doors serving a house or an individual dwelling unit need not comply with Sentences (2) and (3).