Wall Stud-To-Track Gap: Experimental Investigation
Because of an increasing interest in the use of cold-formed steel for commercial and residential framing, both design and installation guidelines are needed. The wall framing, which typically consists of axial load bearing C-section studs, is laterally braced and attached at the bottom and top of the wall to a track section. The common bottom and top attachment consists of the wall stud and track of nominally the same cross-section depth. Because the nominal depths of the C-section and the track are similar, a tight connection is often not achieved and a gap occurs. The Standard for Cold-Formed Steel Framing—General Provisions specifies that the gap between the wall stud and track in a wall assembly must not exceed 1/8 in. This gap dimension is consistent with the gap specified by ASTM C 1007. The value of 1/8 in. Is based on industry experience and practice but had not been experimentally verified. To explore both the stud-to-track connection strength and the aesthetic concerns associated with a gap between the axial load bearing stud and the track in a typical cold-formed steel wall assembly, a test program was initiated at the University of Missouri-Rolla. Based on the findings of the 54 wall assembly tests and short column tests performed in this experimental study, design guidelines are proposed for a typical wall stud assembly.
R. A. LaBoube and P. F. Findlay, "Wall Stud-To-Track Gap: Experimental Investigation," Journal of Architectural Engineering, American Society of Civil Engineers (ASCE), Jun 2007.
The definitive version is available at http://dx.doi.org/10.1061/(ASCE)1076-0431(2007)13:2(105)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Cold-Formed Steel; Experimentation; Frames; Studs; Walls
Article - Journal
© 2007 American Society of Civil Engineers (ASCE), All rights reserved.