Smoke and heat vent systems are an important component of a building's fire protection system. In case of fire the main danger to life is not from the flames, but rather from smoke: 90% of all fire casualties are victims of toxic smoke.
In the event of a fire, smoke and combustion gases rise up in the building due to their thermal uplift and form a layer of smoke gases under the ceiling, which fills up the room in a very short space of time.
With smoke vents in the upper sections of the façade or in the roof, smoke and heat can escape. Ventilation openings in the lower area increase the thermal uplift.