Geotechnical drilling programs are designed to characterize the subsurface at a project site in order to properly design foundations and avoid any subsurface hazards. However, drilling alone only provides isolated locations where subsurface information is obtained. Performing a geophysical survey at a project site prior to designing the drilling program provides continuous geologic data across the site, without missing any areas of concern. The results of the geotechnical geophysics can help to design a more strategic drilling program that is focused on potential anomalies, as well as reducing the total number of borings required to characterize the site.
- Geophysical data are continuous and fill in gaps between borings
- Geophysical surveys will pinpoint anomalous features that may have been missed by a traditional drilling program
- Significant cost savings can occur by reducing the total number of borings required at a project site