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

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Download	View accepted manuscript: On using multiple Kij's in the EN12354 acoustics prediction model to represent excess attenuation in flanking surfaces (PDF, 632 KiB)
Author	Search for: Nightingale, T. R. T.¹; Search for: Bosmans, I.
Affiliation	National Research Council of Canada. NRC Institute for Research in Construction
Format	Text, Article
Conference	Proceedings of the 17th International Congress on Acoustics: 02 September 2001, Rome, Italy
Subject	EN12354, sea, modelling; Flanking
Abstract	EN12354 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	2001-09-01
Language	English
Peer reviewed	Yes
NRC number	NRCC 44991 NRC-IRC-14144
NPARC number	20386304
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Record identifier	08ad8f6e-c75b-4c8e-adfb-6dee945f9b0c
Record created	2012-07-25
Record modified	2020-03-27

Date modified:: 2024-07-07