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.