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Fire Test Methods
Dec 01, 2018


 

There are two primary fire test methods that are used to establish the fire ratings of doors. The first is UL 10B and is referred to as neutral pressure; the second is UL 10C, and is referred to as positive pressure.

 

The difference between the two test methods concerns the location of a neutral pressure plane in the test furnace. In the late 1990’s, the test method required in building codes changed to a positive pressure test method. This change was adopted in the Uniform Building Code (UBC) and the International Building Code (IBC) for swinging-type fire doors.

 

Fire doors required to be tested to either method may be specified by calling out the test method or by indicating that the product must meet a specific section of a model building code. 13 Smoke and draft control


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