Abstract
A seismic cone, equipped with two receivers, was developed to measure in situ shear wave velocity. Using this cone, site investigations were conducted at several sites with different subsoil conditions. Due to its two receivers, the cone was able to measure the shear wave velocity of ground more precisely than the conventional P-S logging of down hole type. The case studies indicated that the strain level caused by the seismic cone is of the order of 10-6 to 10-7. The damping factor h estimated from the seismic cone using spherical wave formula showed values in good agreement with that measured in laboratory using undisturbed samples.
