The basic configuration of the test furnace and test sample in ASTM E 2307 includes a two-story building with the ground floor fully engaged in a post-flashover fire condition. The fire is provided using two burners, one internal burner placed inside the structure and one external burner placed outside the structure, providing a flame plume up along the side of the building. An exterior curtain wall is then installed on one side of the structure. The void between the curtain wall and the edge of the floor slab is then protected with materials that are intended to prevent the passage of flames through the void and based on the testing the ‘F-Rating (Fire Rating)’ and ‘T-Rating (Insulation rating)’ for the assembly is established.It is important to have the ‘Fire Barrier System’ appropriately designed, installed, inspected, documented and maintained for serving its intended use. The system shall bear the design ‘Listing’ and ‘approval’ label and conform to the construction type, joint gap and fire, smoke and movement rating requirements of each separate assembly. It is the responsibility of the product manufacturer/supplier to provide a formal submittal consisting of system design listing or test certifications, including illustrations, from an accredited testing laboratory as per referenced standards that are applicable to each system configuration.For the design and construction of curtain wall systems, the building regulatory system and the adoption of various national or international test standards can have a critical impact on the performance of a façade, in case of a fire incident. Avoiding or compromising the edge of the slab opening with no systems or a non-tested system can potentially lead to a catastrophic inferno. Perimeter Fire Barriers (PFBs) are one of the critical systems required by the various national and international building codes and it’s an effective way of restricting the movement of fire and smoke.
https://wfmmedia.com/importance-of-perimeter-fire-barriers-in-curtain-wall-construction/
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