14X-5-505.10 Ramps.

Ramps must comply with Sections 14X-5-505.10.1 through 14X-5-505.10.2.

14X-5-505.10.1 Slope of ramps.

Ramp runs utilized as part of a means of egress may not have a running slope steeper than one unit vertical in 10 units horizontal (10-percent slope). The slope of other ramps may not be steeper than one unit vertical in eight units horizontal (12.5-percent slope).

14X-5-505.10.2 Width of ramps.

Existing ramps must have a minimum width of 30 inches (762 mm) but not less than the width required for the number of occupants served as determined by Section 14X-5-505.3.

14X-5-505.11 Areas of rescue assistance.

Each area of rescue assistance must be identified by a permanent sign which states "area of rescue assistance" and displays the international symbol of accessibility.

14X-5-505.12 Fire escapes.

Fire escapes must comply with Sections 14X-5-505.12.1 through 14X-5-505.12.7.

14X-5-505.12.1 Limitations.

Fire escape stairways are allowed in existing buildings but may not be used to provide more than 50 percent of the required egress capacity.

(Amend Coun. J. 2-19-20, p. 14473, Art. V, § 31)

14X-5-505.12.2 Location.

Where located on the front of the building and where projecting beyond the building line, the lowest landing must be at least 12 feet (3658 mm) and no more than 14 feet (4267 mm) above ground-level and must be equipped with a counterbalanced stairway to the street. In alleyways and thoroughfares less than 30 feet (9144 mm) wide, the clearance under the lowest landing must be at least 14 feet (4267 mm).

14X-5-505.12.3 Construction.

The structure must be capable of supporting a live load of 100 pounds per square foot (4788 Pa) and must be constructed of steel or other approved noncombustible materials. Walkways and railings located over or supported by combustible roofs in buildings of Type III and IV construction may be constructed of wood not less than nominal 2 inches (51 mm) thick. Stair treads and landings must be so constructed as to prevent accumulation of snow or ice, but the maximum dimension of any opening, through such treads, landings, or floors may not exceed 1-1/4 inches (32 mm).