Bulk Unit Weight is the weight of a unit volume of soil. It is a measure of the density of the soil when it is in its natural, undisturbed state. And is denoted by γbulk. Bulk Unit Weight is usually measured using the Kilonewton per Cubic Meter for Specific Weight. Note that the value of Bulk Unit Weight is always positive. Typically, the value of Bulk Unit Weight is greater than 0.