Schallschutz von Holzbalkendecken - Planungshilfen für die Altbausanierung

Sound insulation of wood beam ceilings - design guidance for building refurbishment projects, part I: Direct sound insulation.

The restoration of existing buildings plays an increasing role in the construction industry. If projected remedial actions are not subject to preservation requirements, then the relevant requirements to be applied are those listed in the current building standards. One structural element that requires an especially careful planning is the vertical partition between apartments, which often comprises of a timber beam floor construction. The current knowledge for the planning of the acoustic properties is insufficient, both in the standards as in literature. In order to close this gap, a research project was carried out at the ift Rosenheim, in which insulation against airborne as well as impact sound was tested for typical floor constructions in existing old buildings. Also a variety of remedial actions to improve the acoustic insulation were tested under laboratory conditions (not including flanking transmission) [1] [2]. A subsequent research project was carried out in collaboration with the University of Applied Sciences Rosenheim to investigate flanking transmission for various types of connections of the masonry wall with the floor. The present article describes the influence of the floor construction on the acoustic insulation and the generation of numbers for acoustic planning parameters concerning the direct transmission of sound via the floor. A subsequent article will address the issue of planning data for the flanking sound transmission.