Fire-resistive Ratings and Assemblies - Printable Version

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Fire-resistive Ratings and Assemblies - mamta sanjay - 07-19-2014

"Fire resistance rating" is a legal term utilized by model codes to regulate building construction.
The fire-resistive ratings of various materials and constructions are established by laboratory tests
Specified in terms of hours a material or assembly can be expected to withstand exposure to fire.
For exterior walls, floors, and roof of masonry or fire-resistive material with a fire-resistance rating of at least 2 hours.

Fire-Resistive Assemblies

An assembly is a combination of materials put together in a specific way that achieves the fire resistance rating required in the building code.
For example, gypsum wallboard applied to a steel stud.
Fire-resistance ratings apply only to assemblies in their entirety.

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