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Home / Assemblies / UL X187
UL X1871-hr Fire RatingBeamLoad-Bearing
Design

Wood Beam — Intumescent coating

UL-listed 1-hour fire-rated wood beam assembly. Solid sawn timber beam with Intumescent coating, 1-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Solid sawn timber beam(12")
2Intumescent coating(0.07")

Specifications

Fire Rating
1-Hour
Load Bearing
Yes
Total Thickness
12.14"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X187
Assembly Type
Beam
Test Standard
CAN/ULC-S101
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

IBC 2021 §722NFPA 5000

Construction Summary

Solid sawn timber beam with Intumescent coating, 1-hour fire rating

Material Layers

LayerMaterialThickness
1Solid sawn timber beam12"
2Intumescent coating0.07"

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.