What Is a Geotechnical Investigation?

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In this video, we're talking with Randy Pail of Driesenga & Associates about geotechnical investigations.

Geotechnical investigations are a vital tool to uncover information about soil and rock's physical and chemical properties. Geotechnical engineers study the load-bearing behavior of soils and rocks. This type of study helps identify the possible causes of engineering problems such as landslides and sinkholes.

Geotechnical investigations identify the foundation and type of soil encountered at a site. They evaluate the soil's load-bearing capacity, landslide potential, slope stability, and flooding susceptibility. Geotechnical investigations are conducted for projects such as civil structures, buildings, roads, foundations, and utilities.

0:00 - Intro
0:11 - What is a Geotechnical Investigation
0:20 - Why do people need this information?
0:33 - What do you NOT want to find beneath the surface?
0:58 - What equipment is used for a geotechnical investigation?
2:08 - Are there different types of geotechnical investigations?
2:34 - How much time does it take to collect the soil samples?
2:57 - Is there a way to mitigate soil problems?
3:36 - What affects the cost of a geotechnical investigation?
3:49 - How does a geotechnical investigation differ from an environmental site assessment?
4:10 - Have you ever found anything surprising beneath the surface?
4:34 - How accurate are the nationwide USDA soil maps?
5:18 - Can those soil maps be useful for any kind of due diligence?
5:28 - Is a geotechnical investigation ever used to identify wetlands?
5:43 - Is it possible to identify soil problems without a geotechnical investigation?
6:30 - What does a geotechnical investigation NOT tell you?

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