§ 15.01.470. Chapter 10, Section 1003.5 amended—Elevation change.

Chapter 10, Section 1003.5, of the International Fire Code, 2012 Edition, is amended to read as follows:

[B]1003.5 Elevation change. Where changes in elevation of less than 12 inches (305 mm) exist in the means of egress, sloped surfaces shall be used. Where the slope is greater than one unit vertical in 20 units horizontal (5-percent slope), ramps complying with Section 1010 shall be used. Where the difference in elevation is 6 inches (152 mm) or less, the ramp shall meet the requirements of the Americans with Disability Act ("ADA").

Exceptions :

1.

A single step with a maximum riser height of 7 inches (178 mm) is permitted for buildings with occupancies in Groups F, H, R-2 and R-3 and Group S and U at exterior doors not required to be accessible by the Americans with Disabilities Act ("ADA") or locations served by a ramp meeting the requirements of the Americans with Disabilities Act ("ADA").

2.

A stair with a single riser or with two risers and a tread is permitted at locations not required to be accessible by the Americans with Disabilities Act ("ADA"), provided that the risers and treads comply with Section 1009.7, the minimum depth of the tread is 13 inches (330 mm) and at least one handrail complying with Section 1012 is provided within 30 inches (762 mm) of the centerline of the normal path of egress travel on the stair.

3.

A step is permitted in aisles serving seating that has a difference in elevation less than 12 inches (305 mm) at locations not required to the accessible by the Americans with Disabilities Act ("ADA"), provided that the risers and treads comply with Section 1028.11 and aisle is provided with a handrail complying with Section 1028.13.

Throughout a story in a Group I-2 occupancy, any change in elevation in portions of the means of egress that serve non-ambulatory persons shall be by means of a ramp or sloped walkway.

(Ord. No. 50-530, § 47, 5-9-17)