Vibrations from internal and external sources consists of structural movement that either disturb building occupants directly (vibration of floors or table surfaces) or indirectly (propagating through building structures and radiates as structural-borne noise.

• Internally generated vibration can be from
• Footfall noise, tables & chairs dragging through hard floor
• Mechanical & electrical equipment
• Threadmills and weight training

Vibration can also be caused by external activities such as piling works and nearby train tracks.