Cold-Formed Steel Slotted Track Design Strength
Publication: Practice Periodical on Structural Design and Construction
Volume 23, Issue 3
Abstract
Slotted tracks are commonly used in the construction of nonload-bearing infill walls in steel and concrete frame structures. These members are configured with closely spaced slots in the track flanges to accommodate the relative vertical displacements between adjacent floors and a variety of stud spacings. Engineered design of slotted tracks is based entirely on manufacturer published data, which in turn are largely based on testing. Published data typically give allowable design strength but often do not indicate the controlling limit state—strength or serviceability—and there is a general lack of information on safety and resistance factors. Based on a series on monotonic tests, it is shown that the setup used to evaluate performance and develop design values can significantly influence the reported design values. It is finally recommended that manufacturers, and the cold-formed steel industry, move toward development of a standard for evaluation and reporting of test-based design values.
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References
AISI (American Iron and Steel Institute). 2016. North American specification for the design of cold-formed steel structural members. AISI S100-16. Washington, DC: AISI.
Bailey Metal Products Limited. 2015. “Slotted track structural framing.” Accessed May 24, 2017. http://www.bmp-group.com/products/structural-framing/slotted-tracks.
Brady Innovations. 2011. “SLP-TRK slotted steel tracks for interior partitions and exterior nonload-bearing wall systems.” Accessed May 24, 2017. http://www.sliptrack.com/ESR-1042.pdf.
CEMCO. 2016. “Head of wall and FAS track systems.” Accessed May 24, 2017. http://www.cemcosteel.com/steel-framing/head-wall-products.
Clark Dietrich. 2014. “Exterior framing head-of-wall deflection systems.” Accessed May 24, 2017. http://www.clarkdietrich.com/products/head-wall-deflection-systems/maxtrak-slotted-deflection-track.
Rahman, N. (2005). Design of single deep leg track to accommodate vertical deflection. Durham, NC: The Steel Network.
SCAFCO Steel Stud Company. 2018. “Slotted leg and seismic drift track.” Accessed March 12, 2018. https://www.scafco.com/wp-content/uploads/scafco-slotted-track-catalog.pdf.
Steeler. 2011. “Steeler steel framing products: Steeler Slotted Stud.” Accessed May 24, 2017. http://www.steeler.com/uploads/pdf/icc-esr-2054-catalog-rs.pdf.
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Copyright
© 2018 American Society of Civil Engineers.
History
Received: Aug 28, 2017
Accepted: Nov 14, 2017
Published online: Mar 29, 2018
Published in print: Aug 1, 2018
Discussion open until: Aug 29, 2018
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