## Relation Between Porosity(n) & Void Ratio(e)

By the definition of porosity, we have , n = Vv/V

where Vv = Volume of voids in a given soil mass.

V= Total volume of the soil mass = Volume of voids in the given soil mass(Vv) + Volume of soil solids in the given soil mass(Vs).

Thus, n = Vv / (Vv + Vs)

or, n = 1 / (1 + Vs/Vv)

or, n = 1 / (1 + 1/e)

or, n = e / (1 + e)

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