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Home / Assemblies / UL U314
UL U3144-hr Fire RatingWallSTC 51
Steel StudMulti-Layer GypsumResilient ChannelPartitionDesign

Steel Stud Wall — 4 layers 5/8" Type C on resilient channels

UL-listed 4-hour fire-rated steel stud wall assembly. 6" steel studs at 16" o.c., 4 layers of 5/8" Type C gypsum board each side on resilient channels.

Cross-Section Diagram

1234567891011.88"WALL ASSEMBLYSECTION · NOT TO SCALE10 LAYERSsee legend for ① ② ③
Legend
15/8" Type C gypsum board(5/8")
25/8" Type C gypsum board(5/8")
35/8" Type C gypsum board(5/8")
45/8" Type C gypsum board(5/8")
5Resilient channels at 24" o.c.(7/8")
66" steel studs at 16" o.c.(6.0")
75/8" Type C gypsum board(5/8")
85/8" Type C gypsum board(5/8")
95/8" Type C gypsum board(5/8")
105/8" Type C gypsum board(5/8")

Specifications

Fire Rating
4-Hour
STC Rating
STC 51
Load Bearing
No
Total Thickness
11.875"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U314
Assembly Type
Wall
Test Standard
UL 263
Construction Group
Light Frame
Number of Layers
10 layers

Applicable Codes

IBC 2021 Table 722.1IBC 2024 §722

Construction Summary

6" steel studs at 16" o.c., 4 layers of 5/8" Type C gypsum board each side on resilient channels

Material Layers

LayerMaterialThickness
15/8" Type C gypsum board5/8"
25/8" Type C gypsum board5/8"
35/8" Type C gypsum board5/8"
45/8" Type C gypsum board5/8"
5Resilient channels at 24" o.c.7/8"
66" steel studs at 16" o.c.6.0"
75/8" Type C gypsum board5/8"
85/8" Type C gypsum board5/8"
95/8" Type C gypsum board5/8"
105/8" Type C 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.