Guides, Manuals & Inventories
Inventory of Fire Resistance-Tested Mass Timber Assemblies and Penetrations
This evolving document lists mass timber assemblies and penetration fire stopping systems in mass timber assemblies that have been tested for fire resistance.
Successful fire tests have been completed on numerous mass timber elements and assemblies, achieving fire-resistance ratings of 3 hours or more. Additional tests by manufacturers and others are ongoing. Most tests are conducted according to ASTM E119 or its Canadian equivalent, ULC S101. Both utilize the same time-temperature curve and performance criteria and, as such, ULC S101 fire tests are usually acceptable to U.S. building officials. However, each project’s building official should be consulted if choosing this design route.
The inventory includes:
- North American fire-resistance tests of mass timber floor/roof assemblies
- North American fire-resistance tests of cross-laminated timber (CLT) wall assemblies
- North American fire tests of penetrations and fire stops in CLT assemblies
- North American fire-resistance tests of connections
Companion paper: WoodWorks’ Fire Design of Mass Timber Members: Code Applications, Construction Types and Fire Ratings