An effective tool in evaluating the geotechnical characteristics of soil deposits in-situ (in place) is with cone penetrometer testing (CPT). This method of geotechnical exploration is particularly useful in soft soil deposits that are typical in southeast Louisiana and the Gulf Coast. CPT, when used in combination with soil borings, provides a nice exploration program offering the best of both worlds: high-quality in-situ test data along with soil samples available for laboratory testing.

Eustis Engineering owns and operates two track-mounted CPT rigs each having a deadweight of 15 tons for reaction. The piezocone provides continuous testing of subsoils as the cone is hydraulically advanced through the soil. It has two components, one measuring tip resistance and the other measuring side skin friction. The cone also measures in-place pore pressures and provides an interpretive description of the subsoils encountered as well as equivalent standard penetration test (SPT) values for strata encountered. Eustis Engineering also owns and operates a seismic piezocone that can provide information for dynamic analysis of foundations.

Eustis Engineering has implemented CPT technology in a variety of settings:

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  In confined spaces...

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  In the marsh environment...

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  Adjacent to an impoundment levee...