Revision of the Swedish sound classification scheme for premises

Abstract

The Swedish building code puts requirements on noise protection in new buildings. For residential buildings, minimum requirements are given directly in the building code, and demands for better acoustic quality are given in a sound classing scheme according to the Swedish Standard SS 25267, which has been revised in 2015. For premises, such as offices, schools, or hotels, the building code does not contain specific quantified minimum requirements on the acoustic properties, but refer instead to the sound classing standard SS 25268 for tabulated values. Sound class C corresponds to the minimum requirements for new buildings, and demands for better acoustic quality are given according to class B or class A. The sound classing standard for premises, SS 25268, is currently under revision, and during the last years, the needs for changes and updates have been collected in cooperation with stakeholders and experts. The paper presents the motivations for the revision and the status of the work. Ideas for major revisions are being discussed such as suggestions for improved room acoustic requirements in schools, as well as sound insulation and acoustic comfort in open plan offices.