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Home / Assemblies / GA SP2201
GA SP22011-hr Fire RatingWallSTC 50
Wood StudGypsum BoardPartitionDesign

GA Steel Stud Partition — 1 layer 5/8" Type X

Gypsum Association file SP2201 — 1-hour fire-rated steel stud partition. GA file SP2201: 2x4 wood studs at 16" o.c., 1 layer of 5/8" Type X gypsum board each side.

Cross-Section Diagram

1232.75"WALL ASSEMBLYSECTION · NOT TO SCALE3 LAYERSsee legend for ① ② ③
Legend
15/8" Type X gypsum board(5/8")
22x4 wood studs at 16" o.c.
35/8" Type X gypsum board(5/8")

Specifications

Fire Rating
1-Hour
STC Rating
STC 50
Load Bearing
No
Total Thickness
6.44"
Source / Publisher
GA (Gypsum Association)
Design Number
SP2201
Assembly Type
Wall
Test Standard
ASTM E119
Construction Group
Light Frame
Number of Layers
3 layers

Applicable Codes

IBC 2021 §722IBC 2024 §722

Construction Summary

GA file SP2201: 2x4 wood studs at 16" o.c., 1 layer of 5/8" Type X gypsum board each side

Material Layers

LayerMaterialThickness
15/8" Type X gypsum board5/8"
22x4 wood studs at 16" o.c.—
35/8" Type X gypsum board5/8"

Important Notice

This assembly listing is for reference only. Always verify against the current GA Fire Resistance Design Manual database before specifying in construction documents. Material substitutions may void the fire rating. Consult with a qualified fire protection engineer for project-specific requirements.