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Home / Assemblies / UL X243
UL X2432-hr Fire RatingColumnLoad-Bearing
Structural SteelDesign

Steel Column — Spray-applied cementitious fireproofing

UL-listed 2-hour fire-rated steel column assembly. W-shape steel column with Spray-applied cementitious fireproofing, 2-hour fire rating.

Cross-Section Diagram

12COLUMN PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1W-shape steel column(9")
2Spray-applied cementitious fireproofing(1.56")

Specifications

Fire Rating
2-Hour
Load Bearing
Yes
Total Thickness
12.12"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X243
Assembly Type
Column
Test Standard
CAN/ULC-S101
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

NFPA 5000IBC 2024 §722

Construction Summary

W-shape steel column with Spray-applied cementitious fireproofing, 2-hour fire rating

Material Layers

LayerMaterialThickness
1W-shape steel column9"
2Spray-applied cementitious fireproofing1.56"

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.