Vibration Performance of Lightweight Cold-Formed Steel Floors
Publication: Journal of Structural Engineering
Volume 136, Issue 6
Abstract
A study investigating the modal properties and dynamic response of several laboratory-constructed and in situ floors supported with cold-formed steel C-shaped joists for floors was conducted. The tested floors were typical of residential midrise applications, with oriented-strand board, FORTACRETE, and cold-formed steel deck subfloors, both with and without lightweight concrete topping. Details including span, large lip-reinforced web openings, subfloor, topping, strongback, and framing condition were varied to observe their influence on the fundamental frequency, damping ratio, and deflection. Suggestions for the design and remediation of floors where vibration serviceability is a concern are given. Laboratory tested floor systems were generally found to be the worst-case scenario for the natural frequency and damping ratio. Furniture and finishes were found to not appreciably change the performance of a floor system. The responses of the floor systems tested in this study were evaluated against the ISO 2631 limit for maximum acceleration and Onysko’s static deflection limit, as presented in ATC Design Guide 1: Minimizing Floor Vibration. The in situ floors examined were found to have performed within the acceptable range, as defined by the two criteria.
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Acknowledgments
The writers would like to express thanks to Dietrich Metal Framing, United States Gypsum, and Worthington Integrated Building Systems for providing testing material and support for the experimental portion of this study.
References
Allen, D. E. (1990). “Floor vibrations from aerobics.” Can. J. Civ. Eng., 17(5), 771–787.
Allen, D. E., and Murray, T. M. (1993). “Design criterion for vibrations due to walking.” Eng. J., 4th Qtr., 117–129.
Allen, D. E., Onysko, D. M., and Murray, T. M. (1999). Minimizing floor vibration, Applied Technology Council, Redwood City, Calif.
Allen, D. E., Rainer, J. H., and Pernica, G. (1985). “Vibration criteria for assembly occupancies.” Can. J. Civ. Eng., 12(3), 617–623.
Brownjohn, J. M. W., and Middleton, C. J. (2008). “Procedures for vibration serviceability assessment of high-frequency floors.” Eng. Struct., 30, 1548–1559.
Canadian Construction Materials Centre (CCMC). (1997). “Development of design procedures for vibration-controlled spans using engineered wood members.” Concluding Rep., Canadian Construction Materials Centre, National Research Council of Canada, Ottawa, Canada.
Davis, B. W., Parnell, R., and Xu, L. (2008). “Vibration performance of lightweight floor systems supported by cold-formed steel joists.” Proc., 19th Int. Specialty Conf. on Cold-Formed Steel Structures, St. Louis, MI, Center for Cold-Formed Steel Structures, Rolla, Mo.
Hanagan, L. (2005). “Walking-induced floor vibration case studies.” J. Archit. Eng., 11(1), 14–18.
Hanagan, L. M., Raebel, C. H., and Trethewey, M. W. (2003). “Dynamic measurement of in-place steel floors to assess vibration performance.” J. Perform. Constr. Facil., 17(3), 126–135.
Hu, L. J., Chui, Y. H., and Onysko, D. M. (2001). “Vibration serviceability of timber floors in residential construction.” Prog. Struct. Eng. Mater., 3, 228–237.
ISO. (1989). “Evaluation of human exposure to whole-body vibration—Part 2: Human exposure to continuous and shock-induced vibrations in buildings (1 to 80 Hz).” ISO 2631–2, International Standards Organization, Geneva.
ISO. (2007). “Bases for design of structures—Serviceability of buildings and walkways against vibration.” ISO 10137, International Standards Organization, Geneva.
Johnson, J. (1994). “Vibration acceptability of floor under impact vibration.” MS thesis, Dept. of Civil Engineering, Virginia Polytechnic Institute and State Univ., Blacksburg, Va.
Kraus, C. A., and Murray, T. M. (1997). Floor vibration criterion for cold-formed C-shaped supported residential floor systems, Virginia Polytechnic Institute and State University, Blacksburg, Va.
Lenzen, K. H. (1966). “Vibration of steel joist-concrete slab floors.” Eng. J., 3(3), 133–136.
Liu, W. (2001). “Vibration of floors supported by cold-formed steel joists.” MS thesis, Dept. of Civil Engineering, Univ. of Waterloo, Waterloo, Ont.
Mello, A. V. A., da Silva, J. G. S., da S. Vellasco, P. C. G., de Andrade, S. A. L., and de Lima, L. R. O. (2008). “Dynamic analysis of composite systems made of concrete slabs and steel beams.” J. Constr. Steel Res., 64, 1142–1151.
Murray, T. M. (1998). “Floor vibrations and the electronic office.” Modern Steel Constr., 38(8), 24–28.
Murray, T. M., Allen, D. E., and Ungar, E. E. (1997). Floor vibrations due to human activity, American Institute of Steel Construction, Chicago.
Ohlsson, S. V. (1982). “Floor vibrations and human discomfort.” Ph.D. thesis, Chalmers Univ. of Technology, Goteborg, Sweden.
Ohlsson, S. V. (1988). Springiness and human-induced floor vibrations: A design guide, Vol. D12, Swedish Council for Building Research, Stockholm.
Onysko, D. M. (1985). Serviceability criteria for residential floors based on a field study of consumer response, Forintek Canada Corp., Ottawa, Canada.
Onysko, D. M. (1988). “Performance criteria for residential floors based on consumer response.” Proc., Int. Conf. on Timber Engineering, 69–129.
Onysko, D. M., Demer, R., and Garant, J. C. (1981). Static and dynamic field tests of residential floors, Forintek Canada Corp., Ottawa, Canada.
Pavic, A., Reynolds, P., Waldron, P., and Bennet, K. J. (2001). “Critical review of guidelines for checking vibration serviceability of post-tensioned concrete floors.” Cem. Concr. Compos., 23, 21–31.
Reiher, H., and Meister, F. J. (1931). “The effect of vibration on people.” Forchung auf dem Gebeite des Ingenieurwesens, 2(11), 381–386 (in German) [Translation—Report No. F-TS-626-RE, Headquaters Air Materiel Command, Wright Field, Ohio (1946)].
Smith, I., and Chui, Y. H. (1988). “Design of lightweight wooden floors to avoid human discomfort.” Can. J. Civ. Eng., 15(2), 254–262.
Wiss, J. F., and Parmelee, R. A. (1974). “Human perception of transient vibrations.” J. Struct. Div., 100(ST4), 773–787.
Xu, L. (2000). Dynamic behaviour of residential floor systems using cold-formed steel joists, Dept. of Civil Engineering, Univ. of Waterloo, Waterloo, Ont.
Xu, L., and Tangorra, F. M. (2007). “Experimental investigation of lightweight residential floors supported by cold-formed steel C-shape joists.” J. Constr. Steel Res., 63(3), 422–435.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 136 • Issue 6 • June 2010
Pages: 645 - 653
Copyright
© 2010 ASCE.
History
Received: Aug 25, 2008
Accepted: Dec 9, 2009
Published online: Dec 14, 2009
Published in print: Jun 2010
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