Ambient Vibration is the recording, evaluation and interpretation of the vibration behavior of a structure under ambient influences without artificial excitation. Noise Monitoring is also included in this report.

Ground Vibration can be caused by construction, equipment or blasting, etc. Seismographs can be used to measure and record ground vibration. It is measured in terms of Peak Particle Velocity (PPV) and the unit is mm/s. PPV refers to the movement within the ground of molecular particles and not surface movement. Ground vibration on a building or structure should be measured outside the structure and at ground level. The displacement value in mm refers to the movement of particles at the surface.