Access to the corridors shall be limited to those necessary for exit access through the corridor from normally occupied spaces.The interior corridors or portions thereof serving such accessory spaces shall be constructed as public corridors in accordance with Table 1020.1.2 with 1-hour fire-resistance-rated fire barriers, and 2-hour fire-resistance-rated fire barriers where a dead-end corridor exceeds 40 feet (12 192 mm) in length.Where the aggregate Group R-2 occupancy accessory area of all rooms, areas or spaces, including outdoor spaces that are not provided with independent means of egress and that do not converge into interior means of egress, exceed 50 percent of the building area of the story in which they are located, and the total number of occupants on such story exceeds 150 persons, the following conditions shall apply: Throughout a story in a Group I-2 occupancy, any change in elevation in portions of the means of egress that serve nonambulatory persons shall be by means of a ramp or sloped walkway. A step is permitted in aisles serving seating that has a difference in elevation less than 12 inches (304.8 mm) provided that the risers and treads comply with Section 1029.13 and the aisle is provided with a handrail complying with Section 1029.15.A step with a single riser or a stair with two risers and a tread is permitted where the risers and treads comply with Section 1011.5, the minimum depth of the tread is 13 inches (330 mm) and not less than one handrail complying with Section 1014 is provided within 30 inches (762 mm) of the centerline of the normal path of egress travel on the step or stair.A single step with a maximum riser height of 7 inches (177.8 mm) is permitted for buildings with occupancies in Groups F, H, R-2, R-3, S and U at exterior doors.WINDER.Īt locations that are not required to be accessible by Chapter 11: The following terms are defined in Chapter 2: ACCESSIBLE MEANS OF EGRESS.
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