Penetrations of Fire-Rated Wall Assemblies

07/13/2007
Article and photos by Gregory HavelDownload this article as a pdf!Fire-rated wall assemblies are built to separate building areas with higher hazards from those with lower hazards, to separate people from hazards and storage areas, to divide a building into smaller areas to slow the spread of fire, and to help confine fire to the area of origin.Fire-rated door and frame assemblies are used in fire-rated walls. Fire-rated dampers are used in ducts that pass through fire-rated walls. Openings in these walls for pipes and cables must also be protected.Photo 1 (below) shows a pipe and an electrical conduit that penetrate this two-hour-rated wall. The space between the concrete block and pipe ...

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