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Home / Assemblies / UL U152
UL U1521.5-hr Fire RatingWallLoad-BearingSTC 44
Wood StudGypsum BoardMineral WoolLoad-Bearing WallDesign

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

UL-listed 1.5-hour fire-rated wood stud wall assembly. 2x6 wood studs at 16" o.c. with R-15 mineral wool batt, single layer of 1/2" Type X gypsum board each side.

Cross-Section Diagram

12348.00"WALL ASSEMBLYSECTION · NOT TO SCALE4 LAYERSsee legend for ① ② ③
Legend
11/2" Type X gypsum board(1/2")
22x6 wood studs at 16" o.c.(5.5")
3R-15 mineral wool batt
41/2" Type X gypsum board(1/2")

Specifications

Fire Rating
1.5-Hour
STC Rating
STC 44
Load Bearing
Yes
Total Thickness
6.5"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U152
Assembly Type
Wall
Test Standard
UL 263
Construction Group
Light Frame
Number of Layers
4 layers

Applicable Codes

IBC 2021 §722IBC 2024 §722

Construction Summary

2x6 wood studs at 16" o.c. with R-15 mineral wool batt, single layer of 1/2" Type X gypsum board each side

Material Layers

LayerMaterialThickness
11/2" Type X gypsum board1/2"
22x6 wood studs at 16" o.c.5.5"
3R-15 mineral wool batt—
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.