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Home / Assemblies / UL X155
UL X1551.5-hr Fire RatingBeamLoad-Bearing
Design

Steel Beam — Concrete encasement

UL-listed 1.5-hour fire-rated steel beam assembly. Steel plate girder with Concrete encasement, 1.5-hour fire rating.

Cross-Section Diagram

12BEAM PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Steel plate girder(24")
2Concrete encasement(2.25")

Specifications

Fire Rating
1.5-Hour
Load Bearing
Yes
Total Thickness
28.5"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X155
Assembly Type
Beam
Test Standard
ASTM E119
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

IBC 2021 §722IBC 2024 §722

Construction Summary

Steel plate girder with Concrete encasement, 1.5-hour fire rating

Material Layers

LayerMaterialThickness
1Steel plate girder24"
2Concrete encasement2.25"

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.