For egress, the fire service specifically focuses on enclosed exit stairs and protected stairways. These stairs are designed to provide a safe, fire-resistant means of escape during emergencies. They are typically constructed with fire-rated walls and doors to prevent the spread of fire and smoke into the stairwell, ensuring occupants have a clear, protected path to exit. Materials used are usually noncombustible, like concrete or steel with fireproofing. These stairs must be continuous, unobstructed, and meet minimum width and headroom requirements to allow for quick and safe evacuation. Open or unenclosed stairs are generally not permitted for egress because they expose occupants to hazards. Firefighters rely on these protected stairwells for both evacuation and operational access during incidents.