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 U139
UL U1393-hr Fire RatingWallLoad-BearingSTC 62
Wood StudMulti-Layer GypsumResilient ChannelLoad-Bearing WallHigh STCDesign

Wood Stud Wall — 3 layers 5/8" Type X on resilient channels

UL-listed 3-hour fire-rated wood stud wall assembly. 2x4 wood studs at 24" o.c., 3 layers of 5/8" Type X gypsum board each side on resilient channels.

Cross-Section Diagram

123456788.13"WALL ASSEMBLYSECTION · NOT TO SCALE8 LAYERSsee legend for ① ② ③
Legend
15/8" Type X gypsum board(5/8")
25/8" Type X gypsum board(5/8")
35/8" Type X gypsum board(5/8")
4Resilient channels at 24" o.c.(7/8")
52x4 wood studs at 24" o.c.(3.5")
65/8" Type X gypsum board(5/8")
75/8" Type X gypsum board(5/8")
85/8" Type X gypsum board(5/8")

Specifications

Fire Rating
3-Hour
STC Rating
STC 62
Load Bearing
Yes
Total Thickness
8.125"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U139
Assembly Type
Wall
Test Standard
CAN/ULC-S101
Construction Group
Light Frame
Number of Layers
8 layers

Applicable Codes

IBC 2021 §722

Construction Summary

2x4 wood studs at 24" o.c., 3 layers of 5/8" Type X gypsum board each side on resilient channels

Material Layers

LayerMaterialThickness
15/8" Type X gypsum board5/8"
25/8" Type X gypsum board5/8"
35/8" Type X gypsum board5/8"
4Resilient channels at 24" o.c.7/8"
52x4 wood studs at 24" o.c.3.5"
65/8" Type X gypsum board5/8"
75/8" Type X gypsum board5/8"
85/8" Type X gypsum board5/8"

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.