Firefighting measures – The National Theatre
In case of fire, both the automatic swinging doors mounted at the entrance (Intercontinental area) and the automatic windows with L35 motors open automatically, even in case of power failure, being powered at 24V.
The solution used for creating a natural air flow through the swinging doors at the entrance was the only technical solution available due to the design of the building, which did not allow the embedding of large windows in the facade, of a damp system or any similar mechanisms.
The Normative on Fire Safety of Constructions P 118 provides, for smoke exhaustion, in case of fire (smoke exhaustion) in crowded rooms, as well as in the adjacent areas accessible to the public, the following:
- the existence, in the upper third area, of smoke exhaustion devices automatically actuated
- well-balanced placement and distribution as even as possible
- total area of at least 1/100 of the surface of the hall or assurance of smoke exhaustion by mechanical system.
Simon RWA door actuation motors (located in the lower area of the facade) and Comunello LIWIN L35 motors for windows actuation are synchronized.
In case of fire, the doors open automatically, letting in fresh air, and the windows open automatically, to let the smoke out.
The pressure difference generated will ensure the quick evacuation of the smoke.
The system provided by KADRA at The National Theatre complies with the provisions of Normative P 118, which require that, in case of natural exhaustion of air by sweeping, the synchronizing of the smoke venting ways and of the fresh airways – when the introduction of the exhaust air (the intake of fresh air/compensation air) is made through the door, it will be provided, at its lower part, with a grill the opening of which will be ordered with that of the hatch (of the smoke exhaustion window).