Planning structural noise protection measures

sound transmission paths
© Fraunhofer IBP
Sound transmission paths between adjacent rooms in buildings

Our experts help you with careful acoustic planning to meet high sound insulation requirements

The construction of residential and office buildings, as well as large-scale renovation and conversion measures, are subject to building law requirements. In practice, these aim to ensure a minimum level of structural noise protection. Since it cannot be expected that “noises from outside or from neighboring rooms are no longer perceived as annoying” (source: DIN 4109-1), in many cases the actual acoustic requirements in accordance with the applicable law (such as high-quality comfort apartments) clearly exceed the minimum requirements (e.g. sound insulation levels II and III according to VDI 4100).

Compliance with specifications - regardless of whether these concern minimum requirements or increased sound insulation - generally requires careful acoustic planning before the construction measures are carried out (measurement-based sound insulation certificate). In simple cases, the sound insulation certificate can also be issued by an engineering office using the equations specified in DIN 4109. Our customers, however, benefit from our particular expertise when it comes to complicated structural designs and construction methods that cannot be calculated according to standards and require expert knowledge and experience.

Examples include numerous multi-layer components, composite and facing structures, elastic component joins, and noise caused by building service equipment. We also assess buildings with special acoustic requirements, e.g. building acoustic test facilities, sound studios, and secure, bug-proof rooms.

To assist our clients with their building acoustics planning, we offer the following services both for the design of individual components and for planning:

  • Mathematical assessment of components and design of suitable sound insulation measures
  • Prediction of airborne and impact sound insulation in buildings according to DIN 4109 and DIN EN 12354
  • Sound insulation certificate according to DIN 4109 for building acoustics planning
  • Prognosis of the sound level caused by installed building service equipment
  • Acoustic consulting and planning of construction measures with above-average or special sound insulation requirements
  • Expert reports / technical appraisals concerning structural noise protection in existing and planned buildings.