### Basic Terms and Definitions in Soil Engineering

The degree of saturation is the ratio of the volume of water to the volume of voids. It is denoted by ''S''. S=Vw/Vv. The degree of saturation generally expressed as a percentage. It is equal to zero when the soil is absolutely dry and 100% when the soil is fully saturated. 4. Percentage air voids. It is the ratio of volume of air to the total volume.

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