8. Doors and Fire Ratings
Chapter objectives
1. Chapter Overview
2. What Are Fire Ratings?
3. Door Assembly Ratings
4. Fire Penetration Ratings
5. “Path of Egress” Doors
6. Electrified Locks and Fire Ratings
7. Chapter Summary
CHAPTER OVERVIEW
If you are going to have a career designing, installing, or maintaining access control systems, you will need to thoroughly understand doors and fire ratings. Fire ratings are the metrics used by licensed underwriting agencies, government entities, door/frame manufacturers, installers, and fire code officials to judge the worthiness of a given door and frame assembly to withstand a fire for a certain time period.
Doors and frames are fire rated together as an assembly, not individually as pieces. The integrity of ...

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