Lateral Resistance Reduction to Cold-Formed Steel-Framed Shear Walls under Various Fire Scenarios
Publication: Journal of Structural Engineering
Volume 146, Issue 5
Abstract
This paper examines the structural response of cold-formed steel-framed building lateral force-resisting systems under combinations of simulated earthquake and fire loading. Full-scale experiments with gypsum-sheet steel composite panel sheathed walls, oriented strand board sheathed walls, and steel strap braced walls are presented. Twenty-two test specimens are subjected sequentially to combinations of cyclic shear deformation and fires of varying intensity; some approximate temperatures in standard furnace tests, and most have characteristics of actual building fires. In select tests, the walls are predamaged to simulate fire following an earthquake. The results show a progressive decrease of postfire lateral load capacity with increasing fire intensity for all walls; however, each wall type exhibits varied sensitivity to the fire intensity as well as to predamage. By understanding the response of these structural systems in real fires, designers can better plan for situations in which multiple hazards, including fire, exist.
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Acknowledgments
This work was funded by the National Institute of Standards and Technology (NIST). We thank Carleton Elliott (Sure-Board), Fernando Sesma (CEMCO), Jim DesLaurier (Marino/WARE), Brian Mucha (Panel Systems, Inc.), Larry Williams (SFIA), Benjamin Schafer (Johns Hopkins University), and Rob Madsen (Devco Engineering) for their expert consultation. We also thank the NIST Fire Research Division staff, including Brian Story, Laurean DeLauter, Anthony Chakalis, Philipp Deardorff, Michael Selepak, Marco Fernandez, William Grosshandler, and Artur Chernovsky, whose efforts and expertise made these experiments possible.
Disclaimer
Certain commercial products are identified in this paper to specify the materials used and the procedures employed. In no case does such identification imply endorsement or recommendation by the National Institute of Standards and Technology, nor does it indicate that the products are necessarily the best available for the purpose.
References
AISI (American Iron and Steel Institute). 2016a. North American specification for the design of cold-formed steel structural members. AISI S100. Washington, DC: AISI.
AISI (American Iron and Steel Institute). 2016b. North American standard for seismic design of cold-formed steel structural systems (with supplement 1). AISI S400-15 w/S1. Washington, DC: AISI.
Alfawakhiri, F. 2001. Behaviour of cold-formed-steel-framed walls and floors in standard fire resistance tests. Ottawa: Carleton Univ.
Andres, B., M. S. Hoehler, and M. F. Bundy. Forthcoming. “Fire resistance of cold-formed steel framed shear walls under various fire scenarios.” Fire Mater. https://doi.org/10.1002/fam.2744.
Ariyanayagam, A. D., and M. Mahendran. 2015. “Fire design rules for load bearing cold-formed steel frame walls exposed to realistic design fire curves.” Fire Saf. J. 77 (Oct): 1–20. https://doi.org/10.1016/j.firesaf.2015.05.007.
ASTM. 2011. Standard test methods for cyclic (reversed) load test for shear resistance of vertical elements of the lateral force resisting systems for buildings. ASTM E2126. West Conshohocken, PA: ASTM.
ASTM. 2015. Standard specification for steel sheet, carbon, metallic- and nonmetallic-coated for cold-formed framing members. ASTM A1003/A1003M. West Conshohocken, PA: ASTM.
ASTM. 2016. Standard test methods for fire tests of building construction and materials. ASTM E119. West Conshohocken, PA: ASTM.
Ayhan, D., S. Baer, Z. Zhang, C. A. Rogers, and B. W. Schafer. 2018. “Cold-formed steel framed shear wall database.” In Proc., Int. Specialty Conf. on Cold-Formed Steel Structures. Rolla, MO: Missouri Univ. of Science and Technology.
Bryant, R. A., and M. F. Bundy. 2019. “The NIST 20 MW Calorimetry measurement system for large-fire research.”. Gaithersburg, MD: NIST.
Bwalya, A. C., G. D. Lougheed, A. Kashef, and H. H. Saber. 2011. “Survey results of combustible contents and floor areas in multi-family dwellings.” Fire Technol. 47 (4): 1121–1140. https://doi.org/10.1007/s10694-009-0130-8.
Chen, W., J. Ye, Y. Bai, and X.-L. Zhao. 2013. “Improved fire resistant performance of load bearing cold-formed steel interior and exterior wall systems.” Thin Walled Struct. 73 (Dec): 145–157. https://doi.org/10.1016/j.tws.2013.07.017.
Feng, M., and Y. C. Wang. 2005. “An experimental study of loaded full-scale cold-formed thin-walled steel structural panels under fire conditions.” Fire Saf. J. 40 (1): 43–63. https://doi.org/10.1016/j.firesaf.2004.08.002.
Gunalan, S., P. Kolarkar, and M. Mahendran. 2013. “Experimental study of load bearing cold-formed steel wall systems under fire conditions.” Thin Walled Struct. 65 (Apr): 72–92. https://doi.org/10.1016/j.tws.2013.01.005.
Hoehler, M. S., B. Andres, and M. F. Bundy. 2019a. Influence of fire on the lateral resistance of cold-formed steel shear walls. Phase 2: Oriented strand board, strap braced, and gypsum-sheet steel composite. Gaithersburg, MD: NIST.
Hoehler, M. S., B. Andres, and M. F. Bundy. 2019b. Dataset from influence of fire on the lateral resistance of cold-formed steel shear walls. Phase 2. Gaithersburg, MD: NIST.
Hoehler, M. S., and C. M. Smith. 2016. Influence of fire on the lateral load capacity of steel-sheathed cold-formed steel shear walls: Report of test. Gaithersburg, MD: NIST.
Hoehler, M. S., and C. M. Smith. 2018. “Dataset from influence of fire on the lateral resistance of cold-formed steel shear walls. Phase 1.” Accessed December 5, 2019. https://www.nist.gov/el/fire-research-division-73300/national-fire-research-laboratory-73306/influence-fire-lateral.
Hoehler, M. S., C. M. Smith, T. C. Hutchinson, X. Wang, B. J. Meacham, and P. Kamath. 2017. “Behavior of steel-sheathed shear walls subjected to seismic and fire loads.” Fire Saf. J. 91 (Jul): 524–531. https://doi.org/10.1016/j.firesaf.2017.03.021.
Intertek. 2010. Test report on the fire resistance of sure board series 200 and 200 W panels. Coquitlam, BC, Canada: Intertek Testing Services.
Schafer, B. W., et al. 2016. “Seismic response and engineering of cold-formed steel framed buildings.” Structures 8 (Nov): 197–212. https://doi.org/10.1016/j.istruc.2016.05.009.
Simpson Strong-Tie. 2017. “S/HDS and S/HDB Holdowns.” In Connectors for cold-formed steel construction, 245–246. Pleasanton, CA: Simpson Strong-Tie.
Sultan, M. A. 1996. “A model for predicting heat transfer through noninsulated unloaded steel-stud gypsum board wall assemblies exposed to fire.” Fire Technol. 32 (3): 239–259. https://doi.org/10.1007/BF01040217.
Takeda, H. 2003. “A model to predict fire resistance of non-load bearing wood-stud walls.” Fire Mater. 27 (1): 19–39. https://doi.org/10.1002/fam.816.
UL (Underwriters Laboratory). 2017a. Fire resistance ratings. Northbrook, IL: UL.
UL (Underwriters Laboratory). 2017b. Fire resistance ratings. Northbrook, IL: UL.
UNDESA (United Nations Department of Economic and Social Affairs). 2014. “World urbanization prospects: The 2014 revision.” In Demographic research. New York: UNDESA.
Wang, X., E. Pantoli, T. C. Hutchinson, J. I. Restrepo, R. L. Wood, M. S. Hoehler, P. Grzesik, and F. H. Sesma. 2015. “Seismic performance of cold-formed steel wall systems in a full-scale building.” J. Struct. Eng. 141 (10): 04015014. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001245.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 5 • May 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Apr 4, 2019
Accepted: Oct 15, 2019
Published online: Mar 5, 2020
Published in print: May 1, 2020
Discussion open until: Aug 5, 2020
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