Fire resistance: the fire resistance of a product is measured in time (minutes, shortened to 60’= 60 minutes). Due to the broad definition the term fire performance criteria is used.
E stands for 'integrity'. Integrity corresponds with the time that no flames are spread to the non-exposed side of the wall (for partitions).
In a construction element, no openings are allowed like cracks, splits, loosening joints,…through which a fairly large throughput of smoke gases could get through and cause fire.
I stands for insulation or thermal insulation. The criterion thermal insulation limits the allowed temperature rise on the side which is turned away from the oven of the element to be tested.
S stands for smoke leakage. During the fire test the smoke leakage is measured alongside the passage. The leakage has to be limited because the otherwise escaping smoke gases could give rise to the propagation of fire.
Open to innovation, closed to fire
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