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Home / Assemblies / UL X192
UL X1921.5-hr Fire RatingBeamLoad-Bearing
Design

Wood Beam — None (heavy timber)

UL-listed 1.5-hour fire-rated wood beam assembly. Solid sawn timber beam with None (heavy timber), 1.5-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Solid sawn timber beam(20")
2None (heavy timber)(2.25")

Specifications

Fire Rating
1.5-Hour
Load Bearing
Yes
Total Thickness
24.5"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X192
Assembly Type
Beam
Test Standard
ASTM E119
Construction Group
Heavy Timber
Number of Layers
2 layers

Applicable Codes

IBC 2021 §722IBC 2024 §722

Construction Summary

Solid sawn timber beam with None (heavy timber), 1.5-hour fire rating

Material Layers

LayerMaterialThickness
1Solid sawn timber beam20"
2None (heavy timber)2.25"

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.