B
HomeLibrariesCopilotSearchProjectsBookmarks
FeedbackHelp Desk
Libraries
Building Codes
Code LibraryIBC — BuildingIRC — ResidentialIFC — FireIPC — PlumbingIMC — MechanicalIFGC — Fuel GasIECC — EnergyNEC — ElectricalModel Codes
Specifications
CSI SpecificationsDOT SpecsTransit SpecsUSACE
Standards
TransportationRailroadFire SafetyAccessibilityStructural
Tools & References
DiagramsAssembliesProductsCalculatorsChecklistsPermits
PricingLog in
Home / Assemblies / UL X316
UL X3161-hr Fire RatingColumnLoad-Bearing
Design

Steel Column — Concrete encasement

UL-listed 1-hour fire-rated steel column assembly. Steel pipe column with Concrete encasement, 1-hour fire rating.

Cross-Section Diagram

12COLUMN PROTECTIONSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Steel pipe column(17")
2Concrete encasement(2.0")

Specifications

Fire Rating
1-Hour
Load Bearing
Yes
Total Thickness
21"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
X316
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

Steel pipe column with Concrete encasement, 1-hour fire rating

Material Layers

LayerMaterialThickness
1Steel pipe column17"
2Concrete encasement2.0"

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.