What features characterize an exit stairway?

An exit stairway is characterized by being enclosed with self-closing fire doors and leading to an exit. This design is essential for ensuring the safety of occupants during an evacuation, as the stairway must provide a protected route away from a potentially hazardous environment. The self-closing fire doors help to prevent the spread of smoke and flames into the stairway, maintaining a safer area for individuals to exit the building.

The enclosure of the stairway is a critical feature that differentiates it from other types of stairways within a building. It is specifically designed to provide safe passage to the outside, reducing the risk of exposure to fire and smoke while ensuring occupants can use it in an emergency situation without being impeded by external elements. This combination of features is in line with building codes and safety regulations aimed at protecting life during an emergency.