14X-5-505.9.9.2 High-rise buildings.

In high-rise buildings, all exit stairway doors which are locked from the stairway side must have electrically-controlled locking devices which can be automatically unlocked upon a signal from the fire command center. A stairway door at the level of exit discharge may not be locked from the stairway side.

Exception: Stairways complying with Section 14X-5-505.9.9.1, option 3.

(Amend Coun. J. 10-7-20, p. 21791, Art. V, § 10)

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).