Estimates of flanking paths involving the wall-floor junction in wood framed construction

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ConferenceInter-Noise 2005: 07 August 2005, Rio de Janiero, Brazil
Pages110; # of pages: 10
Subjectflanking, sound transmission; Flanking
AbstractThis paper reports findings from a recently completed study of flanking sound transmission involving the wall/floor junction in wood framed buildings. The paper examines how common construction details affect flanking paths between rooms separated vertically by a floor/ceiling assembly. Variables considered include: the mounting conditions and orientation of joists, the framing of the wall assembly, and the mounting and number of layers of gypsum board. Estimates of the apparent sound insulation were obtained by summing the energy transmitted via the direct path through the floor-ceiling assembly and all the flanking paths involving four wall-floor junctions. Results indicate that if there is no floor topping (i.e., the subfloor is bare) then it is quite likely that the apparent sound insulation for both airborne and impact sources will be limited by flanking. Three different toppings are considered as treatment options for the floor, and additional layers of gypsum board and resilient mounting are considered as options for the walls. The effectiveness of each option is considered and discussed.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number47741
NPARC number20377289
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Record identifier9bec9c06-c6ad-403d-bc8a-4f63efadc6d1
Record created2012-07-24
Record modified2016-05-09
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