(1) Except as provided in Sentences (4) and (5), required exit doors and doors in required means of egress, except doors in means of egress within dwelling units, shall swing on the vertical axis.
(2) Except as provided in Sentence (5), breakaway sliding doors, installed as required exit doors or required doors in means of egress, shall be identified as swinging doors by means of a label or decal affixed to the door.
(3) Revolving doors shall comply with Article 3.4.6.15.
(4) Movable partitions used to separate a public corridor from an adjacent business and personal services occupancy or a mercantile occupancy need not conform to Sentence (1), provided the partitions are not located in the only means of egress.
(5) Exit doors need not conform to Sentence (1) or (2), where,
(a) the doors serve accessory buildings where life safety is not adversely affected, or
(b) the doors serve storage garages or other accessory buildings serving a house or an individual dwelling unit.