Dry Unit Weight of Sand, River Gravel, and Crushed Stone

What is the dry unit weight of sand, river gravel, and crushed stone?

The dry unit weight (also known as dry density) of a material is a measure of its mass per unit volume when it is completely dry. It's typically expressed in pounds per cubic foot (lb/ft³) or kilograms per cubic meter (kg/m³).

The dry unit weight of sand, river gravel, and crushed stone can vary depending on factors such as the type of material and moisture content.

For example, the dry unit weight of sand typically ranges from 100 to 130 lb/ft³ (1600 to 2080 kg/m³). River gravel can have a dry unit weight of around 95 to 105 lb/ft³ (1520 to 1680 kg/m³). Crushed stone, depending on its composition, can have a dry unit weight ranging from 90 to 100 lb/ft³ (1440 to 1600 kg/m³).

It's important to note that these values can vary based on the specific characteristics of the material. Additionally, the dry unit weight can be influenced by compaction, which can result in higher densities.