# Bulk Density

Written by Jerry Ratzlaff on . Posted in Geotechnical Engineering

Bulk density, abbreviated as Y, also called apparent density or volumetric density, is the ratio total weight of soil to the total volume of soil.

## Bulk Density formula

$$\large{ Y = \frac{ W_t }{ V_t } }$$
Symbol English Metric
$$\large{ Y }$$ = bulk density $$\large{ \frac{lbm}{ft^3} }$$ $$\large{ \frac{kg}{m^3} }$$
$$\large{ V_t }$$ = total volume of soil $$\large{ft^3}$$ $$\large{m^3}$$
$$\large{ W_t }$$ = total weight of soil $$\large{lbf}$$ $$\large{N}$$