Tests that are done on or in the soil at the site are called “in situ tests.” The standard penetration test (SPT), the field vane test, the cone penetration test (CPT), the pressure meter test and the dilatometer test are the most common in-situ tests (DMT).

In-situ soil testing is necessary to learn about soil properties, measure groundwater pressure, find out how much water is in the soil, and get other important information that can be safety-critical in many situations. Tests that are done on the ground, such as in a borehole, trial pit, or tunnel, instead of in a lab. A vane test, a dynamic penetration test, etc., are all examples of in-situ soil tests.

In-Situ Geotechnical Tests:

  • Pressure meter Test
  • Standard Penetration Test (SPT)
  • Cone Penetration Test (CPT)
  • Flat Dilatometer Test (DMT)
  • Borehole Logging.


  • The results of in-situ tests can be used to design foundations, holding structures, slopes, and hazardous waste impoundments.
  • Situ Tests can be used to measure the risk of liquefaction and how well site improvement measures work.
  • In situ tests are faster and test a larger amount of soil, so the results are more accurate.
  • In-situ SEM micro-pillar compression tests can be used to measure the mechanical response of small amounts of material along one axis.
  • With these tests, stress-strain data can also be linked to each deformation.

In Situ Survey:

In experimental physics, the term “in situ” usually refers to a way to collect data or change a sample without exposing it to the outside world.


The in situ testing methods are talked about in terms of three groups: logging, specific, and combined. The standard penetration test (SPT), the cone penetration test (CPT), and the flat plate dilatometer test are the main logging tests that are talked about (DMT).

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