Effectiveness of toppings to control flanking transmission in lightweight framed floors

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ConferenceJoint Meeting of CIB WG51 Acoustics and European Acoustical Association: 15 September 2002, Sevilla, Spain
Pages16; # of pages: 6
Subjectflanking, sound insulation, floor toppings, vibration attenuation; Flanking; Floors
AbstractThis paper examines the effectiveness of toppings to control direct and flanking paths for an impact source placed on a wood-I joist floor. The change in flanking sound insulation due to adding a topping is shown to be different for paths where energy propagates perpendicular to the joists, compared to those where energy propagates parallel to the joists. Floor vibration mappings reveal that a topping will change not only the power injected but also the propagationlosses across the floor. The most effective toppings reduce input power and increase propagation losses relative to the bare floor. One type of topping exhibits significant improvement in the flanking sound insulation in one direction and a significant worsening in the other. The results are used to establish the basis for a semi-empirical model for flanking transmission in structures with very high internal losses.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number45673
NPARC number20386263
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Record identifieref136dae-5033-4658-a1ec-f66c4fcf9305
Record created2012-07-25
Record modified2016-05-09
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