Conference_programme: 17.6 - Predicting vibration / impact / structure-borne sound in buildings
Lecture: Characterization of a water drainage pipe using the EN 14366 and EN 15657 methods
Author(s): Bailhache Simon, Colin Stéphanie, Ducruet Pascal, Guigou-Carter Catherine
Summary:
Structure-borne sound generated by waste water installations can be measured in the laboratory following EN 14366. In this standard, the characteristic structure-borne sound pressure level is defined as the normalized sound pressure level radiated by a reference wall made of 10 cm of concrete. This approach assumes a force source behavior of the pipe and may thus not be adapted for pipes installed in lightweight buildings. The new version of EN 15657 can be used to determine the structure-borne sound power injected by a piece of equipment installed in any type of construction, from characteristics of the source and of the supporting wall or floor. In this work, the source characteristics defined in EN 15657 – i.e. equivalent blocked force and free velocity levels and equivalent mobility – are determined experimentally. The equivalent mobility of the supporting wall (concrete, 10 cm in thickness) is used to calculate the installed structure-borne sound power. The normalized flanking sound pressure level of the wall for a unit power (1 W) is also measured and used to calculate the normalized sound pressure level in the adjacent room. The result is then compared to the characteristic structure-borne sound pressure level measured following EN 14366. Results for various water flow rates are presented and discussed.
Corresponding author
Name: Mr simon bailhache
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: France
