Table 1: Typical Shear Wave Velocities [22].

Soil classification Shear wave velocity (m/sec) Very soft soil 84–106 Soft soil 107–137 Medium soil 138–183 Stiff Soil 184–274 Very stiff soil 275–366 Soft rock/cemented soil 367–610 Rippability limit 670 Rock >670 Concrete 2,286–2,438