## Relation Between Void Ratio, Water Content, Degree of Saturation & Specific Gravity

In this article, we will make a formula or equation or relation between void ratio(e), water content(w), **degree of saturation**() and **specific gravity**(G).

Let,

- = Weight of soil solid in a given soil mass.
- = Weight of water.
- = Volume of soil solid in a given soil mass.
- = Volume of water present in the given soil mass.
- = Unit weight of soil solids or
**density of solids**. - = Unit weight of water or density of water.

By definition of **water content**, we can write,

Or,

[ We know, ]

Or,

Or,

[ We know, and ]

So,

Or,

**Alternative Method,**

By the definition of **void ratio**, we have,

Or,

Or,

Or,

Or,

Or,

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Relation Between Porosity and Void Ratio

Relation Between Dry unit Weight, Bulk unit Weight & Water Content