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Home / Assemblies / UL X170
UL X1701-hr Fire RatingBeamLoad-Bearing
Design

Wood Beam — Fire-retardant treated wood cladding

UL-listed 1-hour fire-rated wood beam assembly. Glulam beam with Fire-retardant treated wood cladding, 1-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Glulam beam(13")
2Fire-retardant treated wood cladding(1.5")

Specifications

Fire Rating
1-Hour
Load Bearing
Yes
Total Thickness
16"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X170
Assembly Type
Beam
Test Standard
CAN/ULC-S101
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

NFPA 5000IBC 2021 §722

Construction Summary

Glulam beam with Fire-retardant treated wood cladding, 1-hour fire rating

Material Layers

LayerMaterialThickness
1Glulam beam13"
2Fire-retardant treated wood cladding1.5"

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.