Skip to main content

Dry Density

The in-situ soil dry density or bulk unit weight can be measured in the lab by using a high quality in-tact soil sample obtained within a sleeve of known volume. This can consist of rings, brass sleeves, Shelby tube samples or others. The weight of the soil at natural moisture content and sampler is measured. The volume of the sampler and weight of the sampler are measured, and then the soil moisture content is determined. With this information, the dry density of the soil or bulk unit weight can be calculated.