ABSTRACT
With this method, owing to the hammer blow upon the head of the pilot/upper layer of the foundation equipped with a measuring cell, there is produced a wave of the frequency range depending on the hammer type. The cell located on the head of the pilot, measures the inlet strength, while the vertical impact of the pilot’s head might be viewed on the geophone. Entered force and signal velocity are recorded by the digital device, and are computer processed with a fast Fourier (FFT) of the algorithm that converts the data into frequency. Further, the velocity is divided by the force in order to achieve the response, or the function of transmission, which is graphically presented as mobile property of the pilot comparing to the frequency.
