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Prediction of Vibration from Vibratory Piling (TRL)    1/1, 1/3

A first approximation of vibration which may arise from vibrodriving may be obtained from the expression:

\nu_(res)=k_v/x^\delta
where:
• k_v=60, with a 50% probability of the vibration level being exceeded
• k_v=126, with a 33% probability of the vibration level being exceeded
• k_v=266, with a 5% probability of the vibration level being exceeded
• x is the distance measured along the ground surface from the pile (m)
• \delta=1.2 (start up and run down); 1.4 (steady-state) or 1.3 (all operations)
• \nu_(res) is the resultant peak particle velocity (mm/s)

Source: Transport Research Laboratory Report 429 Groundborne vibration caused by mechanised construction works (2000), Equation 20