Prefabricated Steel Stair Performance under Combined Seismic and Gravity Loads
Publication: Journal of Structural Engineering
Volume 135, Issue 2
Abstract
Tests were performed on full-size prefabricated steel stair assemblies to assess seismic interstory drift response combined with factored gravity loads. The stair assemblies were production-run units of a standard system and were designed for a typical steel frame building. Two different stair assembly units were tested: one with checker plate and one with concrete-filled pans. A loading system and testing protocol were developed to evaluate the seismic performance using seismic and gravity load combinations. Lateral drifts were imposed in both orthogonal stair directions followed by factored live and dead gravity loads. Imposed lateral drift placed high deformation demands on the stair-to-landing connections and overall performance is dependent on the deformability and endurance of these connections. Careful detailing, fabrication, and inspection of the stair-to-landing connections are required to ensure desired system performance.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writer would like to acknowledge the support for this research by Pacific Stair Co. of Salem, Oregon. The findings and conclusions are those of the writer.
References
AISC. (2003). Load and resistance factor design specification for structural steel buildings (LRFD), 3rd Ed., American Institute of Steel Construction, Chicago.
ASCE. (2005). “Minimum design loads for buildings and other structures.” ASCE 7-05, American Society of Civil Engineers, Reston, Va.
ATC. (1992). “Guidelines for cyclic seismic testing of components of steel structures.” ATC-24, Applied Technology Council, Redwood City, Calif.
BSSC. (2001a). NEHRP recommended provisions for seismic regulations for new buildings and other structures, 2000 Ed., Part 1: Provisions (FEMA 368), Building Seismic Safety Council, Washington, D.C.
BSSC. (2001b). NEHRP recommended provisions for seismic regulations for new buildings and other structures, 2000 Ed., Part 2: Commentary (FEMA 369), Building Seismic Safety Council, Washington, D.C.
BSSC. (2004a). NEHRP recommended provisions for seismic regulations for new buildings and other structures, 2003 Ed., Part 1: Provisions (FEMA 450), Building Seismic Safety Council, Washington, D.C.
BSSC. (2004b). NEHRP recommended provisions for seismic regulations for new buildings and other structures, 2003 Ed., Part 2: Commentary (FEMA 450), Building Seismic Safety Council, Washington, D.C.
Krawinkler, H., Gupta, A., Medina, R., and Luco, N. (2000). “Loading histories for seismic performance testing of SMRF components and assemblies.” SAC/BD-00/10, SAC Joint Venture, Sacramento, Calif.
Krawinkler, H., Zohrei, M., Lashkari-Irvani, B., Cofie, N. G., and Hadidi-Tamjed, H. (1983). “Recommendations for experimental studies on the seismic behavior of steel components and materials.” Report No. 61, John A. Blume Center, Dept. of Civil Engineering, Stanford Univ.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 135 • Issue 2 • February 2009
Pages: 122 - 129
Copyright
© 2009 ASCE.
History
Received: Jul 19, 2007
Accepted: Sep 26, 2008
Published online: Feb 1, 2009
Published in print: Feb 2009
Notes
Note. Associate Editor: Akshay Gupta
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.