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Home / Assemblies / UL X253
UL X2534-hr Fire RatingColumnLoad-Bearing
Structural SteelMineral WoolDesign

Steel Column — Spray-applied mineral fiber

UL-listed 4-hour fire-rated steel column assembly. W-shape steel column with Spray-applied mineral fiber, 4-hour fire rating.

Cross-Section Diagram

12COLUMN PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1W-shape steel column(14")
2Spray-applied mineral fiber(2.36")

Specifications

Fire Rating
4-Hour
Load Bearing
Yes
Total Thickness
18.72"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X253
Assembly Type
Column
Test Standard
UL 263
Construction Group
Non-Combustible
Number of Layers
2 layers

Applicable Codes

IBC 2024 §722IBC 2021 §722

Construction Summary

W-shape steel column with Spray-applied mineral fiber, 4-hour fire rating

Material Layers

LayerMaterialThickness
1W-shape steel column14"
2Spray-applied mineral fiber2.36"

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.