Abstract
Standardized prediction models for airborne and impact sound insulation in buildings are described in prEN 12354 parts 1 and 2. These models have been evaluated by comparing the predicted and measured sound insulation for common building constructions used in Nordic dwelling houses. In total, more than 200 comparisons were carried out under a project sponsored by Nordtest. Results from laboratory measurements can be used as input data for the prediction models. However, it is often possible to calculate such input data. The standard includes informative annexes on calculation of, e.g., the sound reduction index for monolithic elements, the vibration reduction index for junctions, etc. Both the annexes and alternative calculation principles have been evaluated. Calculations based on a few modifications of the informative annexes are recommended for application of the standard in the Nordic countries. Finally, acoustical input data are proposed for some types of construction like lightweight double-leaf walls, floor coverings, etc.
Published Version
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