6.1 – Ventilated façade stratigraphy – 5. Protection against the spread of fire on ventilated façades 354 6.1. 5. PROTECTION AGAINST THE SPREAD OF FIRE ON VENTILATED FAÇADES To limit the spread of fire along the façades of buildings, specific regulations, technical guides and regulations have been developed to which reference should be made. The fire-fighting designer defines the technical requirements of the façade according to the type of building, the intended use, the expected fire loads and the distribution of the compartments. In general, it is preferable to use non-combustible materials on the façade; if there are combustible materials, it is possible to limit the spread of fire on the façade by inserting strips of non-combustible material, in compliance with current regulations. In the event of a fire, temperatures of 900 °C can be reached at the windows and, without sufficient protection, the flames could penetrate the ventilated cavity. The use of fire barriers protects against this risk. 1. 2. 3. In general, three typical fire propagation scenarios can be described on the building façade system: 1. propagation of the fire from the outside due to radiation with flying embers from adjacent buildings; 2. propagation of the fire from the outside due to nearby sources of fire, through radiation or direct exposure to flames (waste on balconies, parked cars, etc.); 3. propagation of the fire inside the building through the openings in the façade (windows, doors, etc.). EXCERPT
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