Fraunhofer Institute for Building Physics
Fraunhofer Institute for Building Physics

Flanking sound transmission via suspended ceilings

Acoustics

© Fraunhofer IBP
Measurement Normalized flanking level difference
Standard DIN EN ISO 10848-2
Measurement object Suspended board ceilings, grid ceilings, metal ceilings, ceilings systems with lights and air terminals, bulkheads (absorbent, boards)


Technical data

Floor area (2 rooms) 18.76 m² and 23.32 m²
Room volume (2 rooms) 55.2 m³ and 72.7 m³
Entrance doors (H × W) 1.900 × 0.805 m and 1.910 × 1.875 m
Height of the ceiling plenum Variable between 400 mm and 1150 mm


Special feature

Max. sound reduction (related to the size of test sample) R'max,w = 70 dB

More information

  • The concrete floor above the suspended ceiling is adjustable in height, so the plenum height can be changed without changing the suspended ceiling.
  • Mounting grids available
  • The separating wall below the suspended ceiling is made of a multi-layer panel construction with high sound insulation.

Suspended Ceilings

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