In stairwell non-combustible construction, which landings must have sprinkler coverage?

In stairwell non-combustible construction, the requirement for sprinkler coverage on landings is based on fire safety codes, which aim to ensure adequate protection in the event of a fire. Sprinkler systems are designed to control or extinguish a fire, and coverage is essential in areas where people may be trapped or where smoke could accumulate, such as stairwells.

The top and bottom landings are critical points because they serve as access points for individuals using the stairs and can be primary locations for smoke and heat accumulation. Additionally, if there are landings with more than one opening, these areas could present an increased risk for fire spread or smoke migration, necessitating protection.

Incorporating sprinklers at all landings with more than one opening is crucial as these additional openings may allow for the rapid spread of smoke and fire to other areas of the building through the stairwell. By requiring coverage for all these landings, the fire protection system can help ensure a safer egress route for building occupants while also protecting the structural integrity of the stairwell, further aiding in effective evacuation and fire control efforts.