Abstract: This paper presents the investigation results of thick sand and boulder soils for a high-rise building site. Geophysical testing methods, such as, wave velocity, pulsation, resistivity, transient electromagnetic and seismic wave, are used as complimentary testing methods to the conventional geotechnical investigation methods. These methods provide useful information for the site characterizations.

Key words: Sand and Boulder Soils, Wave Velocity Testing, Pulsation Testing; , Resistivity; , Transient Electromagnetic Method, Seismic Wave Method