AASHTO T 207-12 (2020) PDF Download

AASHTO T 207-12 (2020) is a standard method of test that outlines the procedure for using thin-walled metal tubes to retrieve relatively undisturbed soil samples for laboratory testing of engineering properties. These properties include strength, compressibility, permeability, and density. The standard specifies the use of thin-walled tubes in piston, plug, or rotary-type samplers such as the Denison or Pitcher. It notes that this method does not apply to liners used within these samplers.

There is a cautionary note that not all tubes specified in this method may have a sufficient diameter to perform all strength or consolidation testing. To determine if a specific tube will be appropriate for a particular test, it is advised to refer to the appropriate test method for the minimum sample size.

It is worth mentioning that, apart from the use of SI units, AASHTO T 207-12 (2020) is considered technically equivalent to ASTM D 1587-08.