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Update of german standard DIN 4109 with respect to lightweight frame constructions

: Bietz, Heinrich; Wittstock, Volker; Scholl, Werner; Krämer, Georg; Bohnsack, Sven; Weber, Lutz

Associazione Italiana di Acustica -AIA-; Deutsche Gesellschaft für Akustik -DEGA-, Berlin; European Acoustics Association -EAA-:
AIA-DAGA 2013. International Conference on Acoustics. Proceedings. CD-ROM : EAA Euroregio, EAA Winterschool; 18 - 21 March 2013 in Merano
Berlin: DEGA, 2013
ISBN: 978-3-939296-05-8
Deutsche Jahrestagung für Akustik (DAGA) <39, 2013, Meran>
Italienische Jahrestagung für Akustik (AIA) <40, 2013, Meran>
International Conference on Acoustics <2013, Meran>
Fraunhofer IBP ()

The German building acoustics standard DIN 4109 is currently under fundamental revision. Amongst other things,
this standard includes a "catalogue of components", which lists sound insulation figures for common building techniques and components. These figures are allowed to be used for the proof of noise abatement without individual testing. The advantage of such figures is that they provide building contractors with a reliable database for the planning of their constructions, without the need of carrying out costly and time-consuming laboratory tests on their own. Furthermore, clients have the possibility to obtain an estimation of the acoustical performance of a building while it is being planned. Regarding lightweight frame constructions (metal framework lined with plasterboard), the figures in the current standard have to be reviewed due to the technical development of plasterboards, a fact which has been considered only partially in past updates. Also, to a wide extent the origin of the figures listed in the recent standard is unclear. Accordingly, a working group in the standardization committee responsible proposed a research project in order to randomly check the noise reduction measures of Tables 31 and 32 (flanking transmission loss of metal frame walls and heavy walls with linings), and, by doing so, to provide atleast a minimum data base for the revision of DIN 4109. Moreover, additional test reports containing related resultswere supplied by the Rigips company. The usability of these results was also to be checked in the course of the planned investigations. Finally, the obtained results should be used in order to verify if the prediction method according to the current draft of DIN 4109.x delivers a reasonable and safe estimation for the flanking transmission loss of heavy walls with detached and completely interrupted linings. The research project was conducted by PTB, the measurements were performed by IBP Stuttgart. Cooperative funding was provided by DIBt and the industrial associations IGG and HDB. A report on the achieved measurement results and a resulting proposal for the revised standard are presented in this paper.