Soil Investigation works will help in characterizing the subsurface at a project site to properly design foundations and also avoid any subsurface hazards. However, drilling alone only will only provide isolated locations at places where subsurface information is obtained. Performing a geophysical survey at the project site before designing the soil investigation works gives continuous geologic data across the site, without leaving behind any areas of concern. The outcome of the geotechnical geophysics can help in designing a more strategic drilling program that is centered on potential anomalies, as well as the reduction of the total number of borings needed to characterize the site.
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Geophysical data are continuous data, and they fill in gaps between borings
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Geophysical surveys will indicate any anomalous features that might have been missed using a traditional drilling program
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Significant cost savings can occur through reduction of the total number of borings needed at a project site
