Limiting Heights, Wall Limiting Heights, Shaft Wall Limiting Heights

Interior Non-Structural Composite Table *

Interior Non-Structural Composite Table: Data is taken from the SSMA limiting heights table for interior non-structural composite wall systems.
View the table SSMA catalog (pdf) on SSMA. Walls are sheathed on both sides full height using minimum 1/2" gypsum board.

Intermittent Air Pressure Load (wind load)-psf*

Shaft Wall System data taken from system catalog USG Cavity Shaft Wall Systems Catalog - SA926 (pdf)
Visit USG Cavity Shaft Wall System on USG.com

Horizontal Shaft Walls spans are taken from Progressive Engineering Report AER-09038 (pdf)
Visit USG Cavity Shaft Wall System on USG.com

Limiting Heights Tool

Steel Stud Wall

Shaft Wall

Horizontal Shaft Walls

Stud Size

Steel Thickness (Gauge)

Stud Spacing

Allowable Deflection

Interior Non-Structural Composite Table *

Steel Stud Size

Steel Thickness (Gauge)

Allowable Deflection

Fire-rated System

Intermittent Air Pressure Load (wind load)-psf*

Stud Size

Steel Thickness (Gauge)

System Layer