Geophysical survey is a cost-effective, non-intrusive and relatively quick way of detecting and assessing sub-surface features. CENGRS has developed in-house testing capabilities in geophysics to effectively complement conventional geotechnics for determination of dynamic soil properties, detecting utilities and voids, site characterization, landslide evaluation, etc. 

• Seismic Refraction Test (SRT) using specialized equipment imported from PASI Geophysics, Italy
• Down-Hole Seismic test (DHST) using customized equipment from Olson Engineering, U.S.A.
• Cross-Hole Seismic test (CHST) using customized equipment from Olson Engineering, U.S.A.
• Spectral Analysis of Surface Waves (SASW)
• Multi-Channel Analysis of Surface Waves (MASW)
• Parallel Seismic Test using customized equipment imported from Olson Engineering, U.S.A.
• Electrical resistivity imaging (ERI) and tomography
• Ground-penetrating radar (GPR)