CDM-VHS-BOX Pre-compressed Very High Stress bearings isolate buildings from vibration and structure-borne noise caused by trains or trams running nearby or underneath buildings, whilst keeping deflections on site very low.


System features:

  • Can be designed to meet natural frequencies anywhere between 8Hz and 18Hz
  • Easily replaceable
  • Limits deflection of the building during construction
  • Easy to install
  • Lifespan greater than 50 years
  • Easily adapted to meet different loads and performance requirements
  • Steel parts are centrifugal hot dip galvanized / hot dip galvanized.

To design the CDM-VHS-BOX structural isolation bearings CDM’s engineers require the following information:

  • Natural frequency requirement
  • Working Dead and Live loads on each contact point
  • Lateral and turning forces at each support point
  • Contact areas and dimensions as well as locations of any fixings
  • Fire protection requirements
  • Seismic requirements

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