Geophysicists
Soil and rock variations beneath building sites are mapped through geophysical surveys, which geophysicists use to assess subsurface conditions.Can't find it? Describe what you need and matching suppliers will come to you.
Geophysicists
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Geophysicists support site investigations where a building project needs information between or beyond individual boreholes. Locating a change in rock depth, for example, can help a geotechnical engineer decide where further drilling is needed. Differences in local geology across Australia mean a method suited to one site may not resolve the same question on another.
Geophysicists for building site investigations
A geophysicist’s relevant project experience matters more than the length of their equipment list. Ground-penetrating radar can help investigate shallow buried features, while seismic methods may suit questions about rock depth; neither is suitable for every ground condition. Prospective geophysicists should explain why their proposed method fits the site and what level of detail it can realistically provide.
What information does a geophysicist need to prepare a proposal?
A site plan should show the proposed works and accompany any existing ground investigation records. The request should include the question the investigation must answer, rather than specify a particular survey method without advice.
Can a survey be carried out around an existing building?
Some methods can work within or around buildings, but access and interference from reinforced concrete or buried services may restrict coverage. It should be clear which areas must remain accessible and whether the work will interrupt occupation.
Who uses the results to design foundations?
The geotechnical engineer usually assesses ground conditions for foundation recommendations, which inform the structural engineer’s design. Responsibility for reviewing the geophysical findings alongside borehole or test-pit results should be confirmed before design decisions are made.