Abstract
A method is suggested for predicting the probable level of vibrations from piling operations at any site. Terms used in the consideration of vibration are defined and the generation and propagation of ground vibration discussed with reference to other published work. Soil stiffness is considered by the authors to be of more importance than hammer or pile type. Data from published work is analysed and suggestions made for upper bounds for peak particle velocity for varying degrees of soil stiffness. Three case histories are then outlined which involved sheet piling for temporary works and foundations for a pipeline. Instrumentation is described and graphs presented of the measurements taken. A graph is then presented for use as a predictive tool and three categories of site suggested - having no problem, needing further investigation and unsuitable for traditional impulsive piling methods. It is suggested that Attwell and Farmer's upper bound vibration line is too conservative.
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