SPlanRob

In the field of building construction, there is a growing social interest in sustainable building and living. Sustainability in construction also means guaranteeing appropriate acoustic conditions, not only today but over a long period of use. This presupposes that the acoustic comfort level is planned and realized today in such a way that it will also meet future requirements and needs of the society. Piping systems are an integral part of buildings, for which the required sound engineering planning tools and suitable products are to be developed.

The innovation of the project is a method-based, consistent description of the acoustic processes from the exciting source (piping system), the transmission in the building, to the impact on the occupant. The characterization of water-carrying pipe systems as structure-borne sound sources includes solutions generally required for complex sources of structure-borne sound for extended sources with multiple connections to multiple components and steady-state and transient time structure. The characterization of mounting elements, involving isolation measures, in such a complex transmission system is new field, as well as the prediction of the sound transmission in the building, considering the difficulties mentioned, especially the transient time structure and the assessment of the noise effect on occupants. The transfer of scientific solutions to the engineering level requires simplifications that lead to acceptable solutions in a wide range of application.

First, the source is characterized acoustically. For this purpose, measurements are carried out in a building-like test facility and on a reception plate test rig. From this a prediction model is derived and validated. From the knowledge gained, measures for improvement of the fastening elements will be developed and tested. In order to quantify the benefit of such improvements, the psychoacoustical effect of the generated noise on the occupants is examined.

The aim of the work is to predict the noise caused by water-carrying pipe systems. In addition to the purely physical evaluation, the subjective effect on the occupants is also to be predicted. For both targets important parameters must be developed that are suitable for characterizing the acoustical properties.