Fraunhofer Institute for Building Physics
Flanking sound transmission of wall constructions
Acoustics
| Measurement | Normalized flanking level difference, vibration transmission (index) of wall junctions |
| Standards | DIN EN ISO 10848-2, DIN EN ISO 10848-3 |
| Measurement object | Separating walls (massive, masonry, lightweight), additional linings, internal and external thermal insulation composite systems, wall junctions |
Technical data
| Floor area (4 rooms) | 89.5 m² (total) |
| Room volume (4 rooms) | 276.6 m³ (total) |
| Entrance doors (H × W) | 2.00 × 0.83 m and 2.06 × 1.94 m |
Special feature
| Max. sound reduction (related to the size of test sample) | Rw,max = 81 to 83 dB (depending on transmission path) |
More information
- The test facility with concrete walls can be separated in 4 adjacent rooms, which are divided by isolated joints (horizontal, vertical) in order to minimize the flanking sound transmission.
- Reproduction of standard construction situations
- Reduced flanking transmission
- Typical scenarios in buildings can be investigated, considering all horizontal direct and flanking transmission paths of airborne and structure-borne sound.