Which method involves extracting material by driving a pipe with a split sampling pipe into the soil?

The method that involves extracting material by driving a pipe with a split sampling pipe into the soil is known as dry sample boring. This technique allows for obtaining undisturbed soil samples efficiently. The split sampling pipe, which is driven into the ground, captures the soil as the pipe penetrates, minimizing disturbance to the material while enabling geotechnical analysis. This approach is particularly useful for assessing the composition and characteristics of the soil layers without altering their natural state significantly. Dry sample boring is often preferred in planning for construction and other projects, as it provides valuable information about the subsurface conditions.