Laboratory characterisation and prediction of structure- borne sound transmission of sanitary installations in heavyweight buildings
Invited paper
HFT Stuttgart
Tuesday 2 june, 2015, 14:40 - 15:00
Auditorium 2 (592)
Abstract:
Sound transmission from sanitary installation systems can be a significant
source of annoyance in buildings. Typical constructions are pre-wall
installations that contain the sanitary equipment such as washbasin, toilet
and fresh- and waste-water pipes. Structure-borne sound due to operation of
the sanitary equipment is transmitted into the pre-wall and from there through
the mounting points into the installation wall (separating wall) and flanking
elements that subsequently radiate sound into adjacent rooms. At present the
possibilities to predict the sound levels due to sanitary installation systems
especially for transient excitation are limited. For this reason it is
essential that there are validated approaches to characterise the pre-wall
installation in order to be able to incorporate these data in prediction
models. For this paper, investigations were carried out on a pre-wall
installation that was installed onto a reception plate in order to
characterise the structure-borne sound power using EN 15657 and to obtain
input data for the EN 12354-5 prediction model. For this purpose, stationary
and transient excitations due to operation of sanitary equipment were
investigated and the prediction model used to predict the sound transmission
in a building-like test rig for comparison with in-situ measurements.