Comparisons of shear wave velocity measurements using SDMT and other in situ techniques at well-documented test sites

The seismic dilatometer (SDMT) has been used in several soil investigation campaigns, both at research test sites and in construction projects. This paper presents comparisons of shear wave velocity (Vs) profiles in different soil types using the SDMT and other testing methods like cross-hole (CH), down-hole (DH), suspension logging (SL), and surface wave methods at well-documented test sites. The results refer to geographical locations around the world including Italy, New Zealand, Brazil, and Germany. The available experience presented in the paper indicates that VS measurements obtained with SDMT are generally accurate and correspond closely to the CH results considered as a reference in the comparisons.