This thesis deals with impact of traffic and construction-induced vibrations on existing facilities. Protecting measures are very limitied, therefore it is necessary to set out the calculations and measurrements before the construction work. Parameter for assesing the impact of vibration on the building, which is widely recognized and compared to the criteria given in standard, is peak particle velocity. Based on the peak particle velocity we can determine the minimum distance between the source and existing building, in order to avoid construction damage. Slovenia has no standard for setting limit values for peak particle velocity. We have listed the limit values of peak particle velocity as defined in British, Austrian, German and Swiss standards. Dynamic analyses with computer program Plaxis were carried out to analyze the impact of consrtuctioninduced vibrations on the ground. Since we are interested in the surface waves, the measuirng points were set on ground surface. We selected the appropriate time interval and recorded the highest peak particle velocity. As we were interested in the influence of soil characteristics on the results, the stifness of the ground was varied in the first case and the results compared to empirical equation. In the second case, the results using two different soil material models were compared. A linear-elastic and HS-Small model were used to model the soil. As in first case, the comparission of the calculated peak particle velocities showed, that the HS-Small model is more suitable for the analysis of ground vibrations.