The water content (w), also known as natural water content or natural moisture content, is the ratio of the weight of water to the weight of the solids in a given mass of soil. This ratio is usually expressed as percentage. When voids are completely filled with air, water content is equal to zero (dry soil).
w(%) = (MW / MS) * 100
The test procedure of the "Oven Dry method" to find the moisture content of soil consists of the following steps:
|Weight of container W1 (gr)|
|Weight of container + wet soil W2 (gr)|
|Weight of container +dry soil W3 gr|
w(%) = ((W2 - W3) / (W3 - W1)) * 100