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Earth Movement
When should you call in a
Soils / Geotechnical Engineer?
Many builders, architects, and
owners are reluctant to hire Geotechnical Engineers to perform
subsurface investigations, and that is easy to understand. The
cost of a house can go up a few thousand dollars. Despite the
cost, there are circumstances where consulting a Soils Engineer is
a wise investment in the project.
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Evidence
of previous earthwork at the site, especially filling, requires
careful investigation. The site may contain uncontrolled fill
soils and debris such as demolition rubble or abandoned vehicles.
Any of these things can cause severe settlement problems.
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Encountering groundwater or weak soil while excavating for
foundations may indicate a potential for settlement in the future.
The problem area should be carefully delineated and remedied by a
Geotechnical Engineer.
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If you are
building a house on a lot with a steep slope, then you need a
Geotechnical Engineer to determine the soil properties and to
evaluate the stability of the slopes.
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A local history of the presence of
clay soils that are susceptible to shrinking and swelling with
changes in moisture content also requires careful investigation.
If you are crossing your fingers
and hoping the soil conditions won't cause a problem, you're
probably right to be uneasy. Call in a specialist. To locate an
Geotechnical Engineer in your area look at the yellow pages under
Engineers or call Department of Public Works Earthwork Division.
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