Excitation of wood joist floors with the standard rubber ball

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ConferenceInter-noise 2009: 23 August 2009, Ottawa, Ontario
Pages19; # of pages: 9
Subjectimpact sound transmission, lighweight structures, rubber ball, source characterization; Office acoustics
AbstractCharacterizing and rating the impact sound isolation of floors and of building structures are important issues in building acoustics. During impact tests the floor is excited structurally with standard impact sources that exert forces normal to the floor like e.g. as occurs when a person is walking. However, different kinds of impact sources exist and unfortunately the excitation spectrum of the lightweight tapping machine according to ISO 140-7 differs significantly from the heavy sources according to JIS A 1418-2 (the rubber ball and the tire that are dropped from a defined height on the floor). Excitation due to a drop of a rubber ball is considered in the course of a current research project on the impact sound isolation of lightweight wood joist floors. In this paper the change of the impact sound level with drop height of the ball is investigated. In a first step the change of the impact force caused by the ball is predicted with an analytical model and the results are compared to experiment.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number51310
NPARC number20374930
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Record identifier62a8d8e3-9df0-4067-b0b4-578666181470
Record created2012-07-23
Record modified2016-05-09
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