Villa Eclair

Choisy-le-Roi, France

Property owner

Bouygues Immobilier

Main contractor



Cité Architecture

Acoustic consultant


Structural engineer


13 tonnes on elastomer bearings & 15 tonnes on springs

Building type

Residential & Hotel

Intervention level


Bouygues Immobilier turned to CDM Group to ensure that no vibrations or noise pollution from the nearby railway tracks could reach their latest development project in Choisy-le-Roi. A combination of CDM-CHR springs and CDM-SEB and CDM-VHS elastomer bearings were used to isolate the buildings.

We had to use all our know-how to tackle the challenge that Bouygues Immobilier had set out for us, namely ensuring that the six residental buildings located near the RER C train tracks don’t feel the vibrations.

Beyond the number of buildings the real challenge was to meet the different vibration isolation objectives:


  • On the one hand, offer a solution with a cutoff frequency of 4 Hz: 13,000 tons for 2 buildings supported by CDM-CHR springs.
  • For the other 4 buildings, cutoff vibration at 10 Hz: 15,000 tons supported by CDM-VHS and CDM-SEB elastomer brearings.



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