Small-Scale Test Behavior of Cold-Formed Steel Roof Trusses
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Volume 132, Issue 4
Abstract
Twenty three small-scale roof trusses were fabricated from cold-formed steel and tested to ultimate capacity. Each specimen was subjected to a single point load at the ridge. One series of specimens was fabricated with a hinge connection at the ridge while a second series had a gusset plate connection at this location. The hinge served to isolate the strength properties of the heel connection and upper chords while the addition of the ridge plate provided information that could be used to quantify the load sharing between the ridge and heel connections. The performance of several heel plate configurations, altered by adding edge stiffeners and varying their shapes and thicknesses, was evaluated. Local buckling of the top chord adjacent to the heel plate was the predominant failure mechanism in combination with distortion of the heel plates in instances where the plates were inadequately stiffened. Methods of reinforcing the top chords to prevent local buckling were investigated.
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Acknowledgments
The material required for specimen fabrication was generously donated by Bailey Metal Products. Financial assistance was provided by the Canadian Sheet Steel Building Institute, the Steel Structures Education Foundation, and the Natural Science and Engineering Research Council.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 4 • April 2006
Pages: 608 - 615
Copyright
© 2006 ASCE.
History
Received: Nov 1, 2004
Accepted: Oct 17, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
Notes
Note. Associate Editor: Benjamin W. Schafer
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