Ul Fire Resistance Directory 2017 Link
The directory provides a comprehensive list of assemblies that have passed rigorous fire-resistance testing, primarily following the standard. These tests measure how long a specific construction assembly—such as a wall, floor, or column—can maintain its structural integrity and prevent the spread of fire.
The was a critical technical resource used by architects, engineers, and building officials to identify fire-rated assemblies and certified construction materials. While UL has since transitioned most of this data to the digital UL Product iQ platform, the 2017 directory remains a benchmark for understanding how passive fire protection is categorized and applied in building design. Core Purpose of the Directory ul fire resistance directory 2017
Here is a retrospective look at why the 2017 Directory was a cornerstone for code compliance and life safety. The directory provides a comprehensive list of assemblies
Underwriters Laboratories (UL) is a non-profit organization that tests and certifies products for safety, including fire resistance. UL's primary goal is to promote public safety by evaluating products and materials for compliance with safety standards. While UL has since transitioned most of this
: The UL Fire Resistance Directory (also known as the "Orange Book") contains UL-certified fire-resistive assemblies (walls, columns, floors, roofs) and their construction details (e.g., steel studs, gypsum board thickness, insulation).
The UL Fire Resistance Directory is an annual publication that provides a comprehensive listing of fire-resistant materials and assemblies that have been tested and certified by UL. The directory includes: