D8 (Dynamic Cone Penetrometer)

The D8, or Dynamic Cone Penetrometer, is a testing device used to assess the strength and stability of soil and pavement layers. It works by dropping a weight onto a cone that penetrates the ground. The number of blows needed to drive the cone a certain distance indicates the soil’s resistance, helping engineers determine its load-bearing capacity. This quick, portable test provides valuable information for construction, road design, and geotechnical assessments, ensuring safety and proper foundation support.