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Flanking transmission
Flanking transmission

Flanking transmission is a more complex form of noise transmission where the resultant vibrations from a noise source are transmitted to other rooms of the building usually by elements of structure within the building. For example, in a steel framed building, once the frame itself is set into motion the effective transmission can be pronounced.

In a building, a fraction of the sound transmission between two rooms may go by a flanking building element, such as the outer wall or the ceiling. In order to avoid this, the manufacturer’s instructions must be followed carefully. The figure shows the principal solutions for an outer wall.

[Image: soundinsulation6.jpg]

Solutions for reducing the risk of flanking transmission

There are often requirements for a safety margin in the different sound data of the elements in order to avoid flanking transmission

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