Impact Sound Transmission by a Timber Beam Ceiling

The family living in the flat above may be very friendly. But it is possible to hear every step that its members take. And in existing, older apartments all parties can tell you a tale about the impact noise nuisance they suffer - except the party in the roof space.

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Timber-Concrete Composite Fibula

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TCC Norms

In addition to EC 5 »Design and construction of timber structures«, the HBV shall be standardised. In preparation for this, several research institutions in Europe are currently working on a technical specification.

Properties of TCC

  • Large load spans
  • low dead weight
  • good fire resistance
  • good sound insulation
  • low susceptibility to vibration
  • prefabrication possible

A timber-beamed ceiling is made-up of the “raw” ceiling structure, the flooring and the underfoot covering. Impact sound is the name for sound generated by movement (e.g., by walking ) or by vibration (such as from a washing machine in operation) and induced into the floor structure. This kind of sound is transmitted in the form of solid-borne sound and is frequently perceived as an irritation. Timber-beamed ceilings frequently do not have an adequate insulation for the protection against such impact sound.