B
HomeLibrariesCopilotSearchProjectsBookmarks
FeedbackHelp Desk
Libraries
Building Codes
Code LibraryIBC — BuildingIRC — ResidentialIFC — FireIPC — PlumbingIMC — MechanicalIFGC — Fuel GasIECC — EnergyNEC — ElectricalModel Codes
Specifications
CSI SpecificationsDOT SpecsTransit SpecsUSACE
Standards
TransportationRailroadFire SafetyAccessibilityStructural
Tools & References
DiagramsAssembliesProductsCalculatorsChecklistsPermits
PricingLog in
Home / Assemblies / UL X179
UL X1792-hr Fire RatingBeamLoad-Bearing
Design

Wood Beam — Intumescent coating

UL-listed 2-hour fire-rated wood beam assembly. Glulam beam with Intumescent coating, 2-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Glulam beam(18")
2Intumescent coating(0.12")

Specifications

Fire Rating
2-Hour
Load Bearing
Yes
Total Thickness
18.24"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X179
Assembly Type
Beam
Test Standard
ASTM E119
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

NFPA 5000IBC 2021 §722

Construction Summary

Glulam beam with Intumescent coating, 2-hour fire rating

Material Layers

LayerMaterialThickness
1Glulam beam18"
2Intumescent coating0.12"

Important Notice

This assembly listing is for reference only. Always verify against the current UL Product iQ database before specifying in construction documents. Material substitutions may void the fire rating. Consult with a qualified fire protection engineer for project-specific requirements.