2. Principles of sound insulation
Acoustic insulation must be considered at the design stage, taking into account all potential sources of noise, then specified and implemented according to the different walls concerned.
2.1 Wall acoustics
Acoustic insulation is based on three main principles: the law of mass, the law of mass-spring-mass, and the law of tightness.
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Mass law
The heavier it is, the better it insulates. The acoustic performance of a single wall, made of a single material, varies according to its nature and mass per unit area. For example, for the same thickness, a concrete wall insulates better than a plasterboard wall, because concrete is heavier than plaster for the same volume. The sound insulation level...
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Principles of sound insulation
Protecting against external noise
Bibliography
Also in our database
Regulations
Order of October 28, 1994 – New acoustic regulations (NRA) relating to sound insulation in residential buildings
Order of June 30, 1999 on acoustic characteristics of residential buildings
Decree of April 25, 2003 on noise abatement in educational, health and hotel establishments
Decree no. 2006-1099 of August 31, 2006 on the fight against neighborhood...
Organizations
Center for Information and Documentation on Noise (CIDB) http://www.bruit.fr
Groupement de l'ingénierie acoustique (GIAc) – Member of the CINOV federation http://www.cinov.fr/syndicats/giac
French Environment and Energy Management...
Standards and norms
- Vérification de la qualité acoustique des façades - NF S 31 057 - 10-82
- Acoustics – Assessment of sound insulation of buildings and building components - NF EN ISO 717 (indice de classement S 31-032) -
- Systèmes électroacoustiques pour services de secours - NF EN 60849 - 08-98
Documents
A new version of the document "Examples of acoustic solutions – Acoustic Regulations 2000" was published in February 2014 by the French Ministry of Land and Housing. New solutions have been added: lightweight timber structures (strip houses and interior staircases) and façade and roofing solutions in particular, downloadable at http://www.developpement-durable.gouv.fr
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