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Situ assessment takes place in the natural environment when the learner is not aware that an assessment is taking place.

In-situ evaluation: What is it?

Without having to remove soil samples from the ground and transport them to a lab for testing, a number of in situ tests can be utilized to quantify soil qualities as they are already present in the environment.

This is often preferable to collecting samples to be analyzed later in the lab, and in some cases—for loose sands, for example—relative density may be the only practical means to ascertain a particular soil property.

The three most common types of in-situ tests are:

  • Empirical tests, where no basic analysis is available and stress routes, drainage conditions, and rate of loading are either uncontrolled or incorrect.
  • Semi-empirical testing, where a slender correlation between variables and results may be established (examples include cone penetrometer tests, California Bearing Ratio (CBR) tests, and borehole permeability tests).
  • Analytical experiments, where stress pathways are regulated (but strain levels and drainage frequently aren't) (examples are vane shear strength, pressuremeter tests, pumping tests, and packer permeability).

Learn more about in-situ assessment with the help of the given link:

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