AASHTO T 206-19 PDF Download

AASHTO T 206-19 is a standard method that outlines the process of conducting the Standard Penetration Test (SPT) for soil analysis. It is similar to the ASTM D 1586-11 standard, with the only difference being the use of SI units.

The primary purpose of this standard is to guide engineers and technicians in obtaining soil samples and assessing the resistance of the soil to penetration. This is achieved by driving a split-barrel sampler into the ground. The resulting soil sample collected during this process is representative of the subsurface conditions.

The SPT is widely used in geotechnical engineering to evaluate the strength and properties of soil. It involves repeatedly driving the split-barrel sampler into the ground using a hammer, and the resistance to penetration is measured. This data helps in characterizing the soil and making informed decisions regarding foundation design, soil classification, and other engineering applications.