Reaction-to-fire tests for fa？ades — Part 2: Large-scale test

ISO 13785-2:2002 specifies a method of test for determining the reaction to fire of materials and construction of fa ade claddings when exposed to heat and flames from a simulated interior compartment fire with flames emerging through a window opening and impinging directly on the fa ade. The information generated from this test may also be applicable to the scenario of an external fire impinging on a fa ade; however, the results may not be applicable for all fire exposure conditions.

This method is applicable only to fa ades and claddings that are non-loadbearing. No attempt is made to determine the structural strength of the fa ade or cladding.

This test is not intended to determine the fire behaviour of a given building fa ade. Details such as balconies, windows, window shutters, curtains, etc., are not considered in this test. This test does not include the risk of fire spread e.g. through the window details of the fa ade system as it only is constructed as a fa ade wall. There is clear evidence that an internal corner (also called a re-entrant corner) configuration produces a more intense fire exposure than a flat fa ade. The most commonly encountered internal re-entrant cor