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Home / Assemblies / UL X165
UL X1654-hr Fire RatingBeamLoad-Bearing
Design

Steel Beam — Spray-applied cementitious fireproofing

UL-listed 4-hour fire-rated steel beam assembly. Steel plate girder with Spray-applied cementitious fireproofing, 4-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Steel plate girder(21")
2Spray-applied cementitious fireproofing(2.39")

Specifications

Fire Rating
4-Hour
Load Bearing
Yes
Total Thickness
25.78"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X165
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

Steel plate girder with Spray-applied cementitious fireproofing, 4-hour fire rating

Material Layers

LayerMaterialThickness
1Steel plate girder21"
2Spray-applied cementitious fireproofing2.39"

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.