The practical knowledge of the SisLab team in the field of earthquake engineering. The main activities of SisLab are aimed at the understanding of existing structures through the determination of the structural layout achieved by geometric survey, laser scanner sampling and in situ material characterization. Investigation of a structural materials strength can be performed by either destructive testing (removal of material cores for later laboratory test) or non-destructive testing (ultrasonic, sclerometric, pachometric, thermographic, georadar etc.).