On using multiple Kij's in the EN12354 acoustics prediction model to represent excess attenuation in flanking surfaces

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ConferenceProceedings of the 17th International Congress on Acoustics: 02 September 2001, Rome, Italy
Pages12; # of pages: 2
SubjectEN12354, sea, modelling; Flanking
AbstractEN12354 is a standardised method to compute the apparent sound insulation of building assemblies formed by wall and floor elements that are assumed to be heavy, monolithic, homogeneous and moderately damped. However, most large walls and floors are not perfectly homogeneous, they are made by joining together a series of smaller more manageable pieces, (e.g., precast concrete, plasterboard, glass panes, etc.). Depending on the mechanical properties of the joints between panels, there may be significant excess attenuation, which in most cases indicates the surface must be treated as a series of connected panels. This summary paper shows that EN12354 is based on simplified SEA and can be extended to account for excess attenuation introduced by junctions between the elements. However, the effective Kij necessary to account for the excess attenuation is not simply the sum of the Kij's for all junctions, as this leads to significant errors.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number44991
NPARC number20386304
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Record identifier08ad8f6e-c75b-4c8e-adfb-6dee945f9b0c
Record created2012-07-25
Record modified2016-05-09
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