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 U344
UL U3443-hr Fire RatingWallSTC 62
Steel StudMulti-Layer GypsumFiberglass BattResilient ChannelPartitionHigh STCDesign

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

UL-listed 3-hour fire-rated shaft wall assembly. 3-5/8" CT studs at 24" o.c. with R-11 fiberglass batt, 3 layers of 5/8" Type X gypsum board each side on resilient channels.

Cross-Section Diagram

1234567899.75"WALL ASSEMBLYSECTION · NOT TO SCALE9 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")
53-5/8" CT studs at 24" o.c.(3.625")
6R-11 fiberglass batt
75/8" Type X gypsum board(5/8")
85/8" Type X gypsum board(5/8")
95/8" Type X gypsum board(5/8")

Specifications

Fire Rating
3-Hour
STC Rating
STC 62
Load Bearing
No
Total Thickness
8.25"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U344
Assembly Type
Wall
Test Standard
UL 263
Construction Group
Concrete/Masonry
Number of Layers
9 layers

Applicable Codes

IRC R302.1

Construction Summary

3-5/8" CT studs at 24" o.c. with R-11 fiberglass batt, 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"
53-5/8" CT studs at 24" o.c.3.625"
6R-11 fiberglass batt—
75/8" Type X gypsum board5/8"
85/8" Type X gypsum board5/8"
95/8" 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.