Stairs that are protected from fire and smoke in the building they serve are called what?

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Multiple Choice

Stairs that are protected from fire and smoke in the building they serve are called what?

Explanation:
Stairs protected from fire and smoke in the building they serve are called exit stairs. These stairways are designed as a protected path for occupants to evacuate, enclosed with fire‑resistant construction and self-closing or smoke‑resistant doors to prevent smoke from entering. They run from occupied floors to the outside or to a safe area, keeping the route tenable during a fire. This distinguishes them from service stairs, which are mainly for staff use and may not be required to be fire‑protected. Access stairs and main stairs aren’t standard terms for a protected egress path.

Stairs protected from fire and smoke in the building they serve are called exit stairs. These stairways are designed as a protected path for occupants to evacuate, enclosed with fire‑resistant construction and self-closing or smoke‑resistant doors to prevent smoke from entering. They run from occupied floors to the outside or to a safe area, keeping the route tenable during a fire. This distinguishes them from service stairs, which are mainly for staff use and may not be required to be fire‑protected. Access stairs and main stairs aren’t standard terms for a protected egress path.

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