Experimental Study of Metal Roof Decking Systems Subject to Tornado-Borne Debris Impact
Publication: Journal of Performance of Constructed Facilities
Volume 32, Issue 4
Abstract
Wind-borne debris is a major threat to the integrity of building envelope during hurricanes, tornadoes, and other high-wind events. This paper details the process and outcomes of a series of debris impact tests on different metal roof decking systems. The test assemblies were built with two deck types and two support types and impacted by wood missiles at different velocities and locations. The test protocol was consistent with the industry guidelines for safe rooms and storm shelters. Deformation of metal deck was increased with impact velocity, and impact locations farther away from support exhibited larger deformations. At lower impact velocities, assemblies with hollow steel sections (HSS) support tended to incur larger deformation than those with joist support at near-support locations but less deformation at away-from-support locations. To overcome the limitation of the experiment, future finite-element analysis studies are proposed to investigate a wider range of impact velocities and locations along with additional structural parameters of the metal roof decking system.
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Acknowledgments
This paper is based on work supported by the AISC and the National Science Foundation (NSF) under Grant No. CMMI-1400224. Their generous support is greatly appreciated. Any opinions, findings, conclusions, or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of these sponsors. The authors thank Seyed Saeed Ahmadisoleymani for drafting Figs. 4 and 5 and Dr. Ernst Kiesling of Texas Tech University for initiating the project.
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 32 • Issue 4 • August 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Oct 8, 2017
Accepted: Mar 14, 2018
Published online: Jun 11, 2018
Published in print: Aug 1, 2018
Discussion open until: Nov 11, 2018
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