AcuWood Report 2, SP Report 2014:15
Wooden multi storey family houses are increasingly build in Europe. Driving forces are better sustainability, a development towards industrialisation of building elements and related to it, cost reduction in the construction sector. In the past years, legislation has enabled wooden multi storey houses in many countries, including Germany. The main problems of fire protection issues have been solved. However, noise and vibration disturbances experienced by residents tends to increase, even if the building code requirements are fulfilled. Therefore, sound and vibration issues have become the new hindrance for multi storey wooden buildings.
The current acoustic requirements in multi storey family houses are based on experience in heavy weight multi storey buildings, as wooden buildings have not been possible previously. The perceived acoustic quality in lightweight buildings is different, compared to heavyweight structures. In particular, low frequency sound transmission of airborne and especially impact sound sources lead to complaints in wooden buildings, and might become very evident and disturbing in lightweight structures .
The currently used rating systems for airborne and impact sound transmission in buildings were developed in the 1950’s and aimed to rate the building constructions of this time. In the 1990’s the introduction of spectrum adaption terms in ISO 717 [2, 3] changed the rating system and included (in parts) low frequencies down to 50 Hz. With the introduction of wooden multi‐storey houses with acoustic requirements on the separating elements (floors and walls), it was obvious that the current rating systems did not prevent increased annoyance of living noise, especially impact noise, in wooden buildings.
In this project, the aim was to find better technical descriptors of impact noise sources by correlation to subjective ratings of impact noise sources in Buildings. Besides wooden constructions, a concrete floor was also investigated to include the behaviour of common floor design in this study.
TräGuiden tillhandahåller information om trä och träbyggande. Webbsidan drivs av Svenskt Trä, en del av Skogsindustrierna, och utgör med sina nära en miljon besökare per år ett viktigt informationsnav för byggande i Sverige.
TräGuiden beskriver tekniska lösningar för träbyggande samt innehåller information om trämaterialets egenskaper. TräGuidens innehåll av illustrationer och konstruktionslösningar kan fritt skrivas ut eller delas med andra.
Det finns också nedladdningsbara ritningar i CAD-format på TräGuiden.
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