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Home / Assemblies / UL U306
UL U3063-hr Fire RatingWallSTC 72
Steel StudMulti-Layer GypsumFiberglass BattResilient ChannelPartitionHigh STCDesign

Steel Stud Wall — 2 layers 1/2" Type X on resilient channels

UL-listed 3-hour fire-rated steel stud wall assembly. 6" steel studs at 16" o.c. with R-19 fiberglass batt, 2 layers of 1/2" Type X gypsum board each side on resilient channels.

Cross-Section Diagram

123456710.38"WALL ASSEMBLYSECTION · NOT TO SCALE7 LAYERSsee legend for ① ② ③
Legend
11/2" Type X gypsum board(1/2")
21/2" Type X gypsum board(1/2")
3Resilient channels at 24" o.c.(7/8")
46" steel studs at 16" o.c.(6.0")
5R-19 fiberglass batt
61/2" Type X gypsum board(1/2")
71/2" Type X gypsum board(1/2")

Specifications

Fire Rating
3-Hour
STC Rating
STC 72
Load Bearing
No
Total Thickness
8.875"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U306
Assembly Type
Wall
Test Standard
CAN/ULC-S101
Construction Group
Light Frame
Number of Layers
7 layers

Applicable Codes

IRC R302.1

Construction Summary

6" steel studs at 16" o.c. with R-19 fiberglass batt, 2 layers of 1/2" Type X gypsum board each side on resilient channels

Material Layers

LayerMaterialThickness
11/2" Type X gypsum board1/2"
21/2" Type X gypsum board1/2"
3Resilient channels at 24" o.c.7/8"
46" steel studs at 16" o.c.6.0"
5R-19 fiberglass batt—
61/2" Type X gypsum board1/2"
71/2" 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.