ABSTRACT
Abstract A flexible joint technique for wooden building components was developed. Object was to achieve acceptable sound insulation in wooden apartment buildings due to reducing flanking transmission. Attention was particularly paid on the impact sound insulation of the light weight wooden joist floor. To ensure the sound insulation produced by the developed structures a full scale two-storey test building was constructed. Airborne and impact sound insulation were measured both vertically and horizontally. This paper deals only with the vertical insulation, which is usually more problematic. According to ISO method measured standardized impact sound pressure levels were 42 - 47 dB and apparent sound reduction indices 65-72 dB. Keywords: Timber structures, sound insulation.
