Brussels Airport Runway

Zaventem, Belgium

Property owner

Brussels Airport

Main contractor



Acoustic consultant

Structural engineer



Building type


Intervention level


One of the three runways at Brussels Airport was recently renewed. Part of the runway crosses an underground tunnel which is now untainted by large vibrations when aircraft take off thanks to the new CDM-FBT elements.

The inertia base with a width of 60 m and a length of 16 m at the Brussels Airport runway, probably dating from the 70’s and already resting on isolation pads, was to be renovated as the long term stability of the existing pads could not be guaranteed.

To limit the timeframe during which the runway would be out of service, CDM suggested keeping the existing inertia base and only replacing the old isolation pads by means of an innovative method.
More than 2000 new, pre-compressed, CDM-FBT elements were slid under the inertia base through around 500 drill holes. These new elements now take up the load from the old pads so that a long term functioning of the inertia base can be guaranteed.


Brussels Airport Runway – CDM-FBT
Brussels Airport Runway

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