Geophysical Mapping: Problem Details Problem Name: Building stability Problem Type: Buildings and Structures Assigned Methods: + Borehole imaging, Structure logging Borehole Methods + Ground penetrating radar (surface-based) Electromagnetic Methods + Ground penetrating radar - Borehole tomography Electromagnetic Methods + Seismic crosshole tomography Seismic Techniques + Seismic surface waves methods Seismic Techniques + Seismic vibration control Seismic Techniques 0 Acoustic logging Borehole Methods 0 Nuclear logging Borehole Methods 0 Refraction seismic tomography (surface-based) Seismic Techniques 0 Standard refraction seismics Seismic Techniques US Very-high resolution reflection seismics Seismic Techniques    '+' = Technique applicable; '0' = Application possible/limited use; 'US' = Ultra-Sonic (different equipment)