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Home / Assemblies / UL U104
UL U1041.5-hr Fire RatingWallLoad-BearingSTC 43
Wood StudGypsum BoardResilient ChannelLoad-Bearing WallDesign

Wood Stud Wall — single layer 1/2" Type X on resilient channels

UL-listed 1.5-hour fire-rated wood stud wall assembly. 2x4 wood studs at 16" o.c., single layer of 1/2" Type X gypsum board each side on resilient channels.

Cross-Section Diagram

12345.38"WALL ASSEMBLYSECTION · NOT TO SCALE4 LAYERSsee legend for ① ② ③
Legend
11/2" Type X gypsum board(1/2")
2Resilient channels at 24" o.c.(7/8")
32x4 wood studs at 16" o.c.(3.5")
41/2" Type X gypsum board(1/2")

Specifications

Fire Rating
1.5-Hour
STC Rating
STC 43
Load Bearing
Yes
Total Thickness
5.375"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U104
Assembly Type
Wall
Test Standard
UL 263
Construction Group
Light Frame
Number of Layers
4 layers

Applicable Codes

IBC 2021 Table 722.1IBC 2024 Table 722.1

Construction Summary

2x4 wood studs at 16" o.c., single layer of 1/2" Type X gypsum board each side on resilient channels

Material Layers

LayerMaterialThickness
11/2" Type X gypsum board1/2"
2Resilient channels at 24" o.c.7/8"
32x4 wood studs at 16" o.c.3.5"
41/2" Type X gypsum board1/2"

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.