Damping of a floor sample

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ConferenceProceedings : ASCE Specialty Conference on Dynamic Response of Structures: 15 January 1981, Atlanta, Geogia, USA
Pages859873; # of pages: 15
Subjectfloors; test procedures; vibration control
AbstractThe dynamic behavior of floors was investigated by constructing a 28 ft x 29 ft (8534 x 8839 mm) single bay floor sample, consisting of a composite concrete slab and open-web steel joists. This paper is primarily concerned with an examination of the effect of four different test methods on the modal damping ratios determined for the fundamental mode of vibration of the floor sample. It was found that the commonly used heel impact test gave consistently higher values of modal damping than a new shaker impact test, white noise or steady state shaker excitations. The higher damping values were a result of the additional damping contributed to the floor sample by the person performing the heel impact. The effect on the fundamental damping ratio of the following structural and architectural modifications to the floor sample were also investigated: varying the edge conditions of the floor sample, adding a suspended ceiling or a gypsum board ceiling, and, bolting steel-neoprene damping strips to the bottom chord of the joists.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number19457
NPARC number20378063
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Record identifier20120820-c700-4953-b3e6-a94076db4049
Record created2012-07-24
Record modified2016-05-09
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