Colt smoke control system types
Smoke and heat exhaust ventilation systems, also known as "SHEVS" are natural or powered systems that remove smoke from a building. Inlet ventilators, dampers and ductwork are also often integrated into the scheme.
These prevent the movement of smoke and heat from one area to another. They take the form either of physical barriers such as smoke curtains or fire curtains, or as pressure differential systems, also known as pressurisation systems.
Enclosed or underground car parks normally require ventilation systems to assist firefighting operations. These systems generally also prevent the build-up of carbon monoxide during normal day to day use of the car park.
Smoke shaft systems can be designed to ventilate fire-fighting lobbies so as to assist fire-fighting operations from a fire-fighting shaft, and also to ventilate common corridors in high rise residential developments.
Pressurisation systems or stairwell pressurisation systems protect escape routes and fire-fighting shafts against the ingress of smoke by maintaining the pressure within the escape route higher than that in the adjacent spaces.