Behavior of Self-Drilling Screws in Light-Gauge Steel Construction
Publication: Journal of Structural Engineering
Volume 133, Issue 6
Abstract
Single point, self-drilling fasteners are commonly used in light-gauge steel constructions including domestic, agricultural, and industrial structures. Fasteners installed in practice often suffer from a variety of in situ conditions that can affect the capacity of the fastener, such as construction tolerances creating combined shear and bending in the fastener (rather than pure shear), overtorqueing the fastener which can cause stripping of the thread or shearing off the head, nonperpendicular insertion of the fastener and accidental impact on the structure creating dynamic loads on the fastener. This note describes a series of 120 single lap connection tests of single screw fasteners under a variety of the above-mentioned conditions, performed on fasteners of different gauge inserted into different thicknesses and grades of steel. A design equation is proposed to modify the nominal shear strength to account for these conditions.
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References
Australian/New Zealand Standard (AS/NZS). (2005). “Cold-formed steel structures.” AS/NZ 4600, Standards Australia, Sydney, Australia.
Bambach, M. R., and Rasmussen, K. J. R. (2006). “Strength and ductility of single point, self-drilling fasteners in bending and shear.” Research Rep. No. R872, Dept. of Civil Engineering, Univ. of Sydney, Sydney, Australia, www.civil.usyd.edu.au/publications .
NAS. (2001). “North American specification for the design of cold-formed steel structural members.” AISI standard, 2001 Ed., American Iron and Steel Institute.
NAS. (2004). “2004 supplement to the North American specification for the design of cold-formed steel structural members.” AISI standard, 2001 Ed., American Iron and Steel Institute.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 6 • June 2007
Pages: 895 - 898
Copyright
© 2007 ASCE.
History
Received: May 11, 2006
Accepted: Jul 10, 2006
Published online: Jun 1, 2007
Published in print: Jun 2007
Notes
Note. Associate Editor: Benjamin W. Schafer
Authors
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