The application of geophysical survey techniques to site investigations for civil engineering purposes. Common investigations include:
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Locate voids and sinkholes
Locate mineshafts and adits
Map bedrock depths
Map bedrock rippability
Map fractures and identify weak zones in bedrock
Locate shallow sand and gravel deposits
Map groundwater surface and flow paths
Determine unknown depth of foundations
Evaluate structures – bridges, weirs
Evaluate pavement - roads, runways
Detect buried hazards on brownfield sites
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