# Water Content

Written by Jerry Ratzlaff on . Posted in Geotechnical Engineering

Water content, abbreviated as w, also called moisture content, a dimensionless number, is the ratio of weight of soil to the weight of water or the quantity of water contained in a material.

## water content formulas

 $$\large{ w = \frac{M_w}{M_s } }$$ $$\large{ w = \frac{W_w}{W_s } }$$ $$\large{ w = \frac{ S \; e }{ G_s } }$$

### Where:

 Units English Metric $$\large{ w }$$ = water content (% moisture contemt) $$\large{dimensionless}$$ $$\large{ S }$$ = degree of saturation (expressed as %) $$\large{dimensionless}$$ $$\large{ M_s}$$ = mass of solid $$\large{lbm}$$ $$\large{kg}$$ $$\large{ M_w }$$ = mass of water $$\large{lbm}$$ $$\large{kg}$$ $$\large{ G_s }$$ = specific gravity of soil $$\large{dimensionless}$$ $$\large{ e }$$ = void ratio $$\large{dimensionless}$$ $$\large{ W_s}$$ = weight of solid $$\large{lbf}$$ $$\large{N}$$ $$\large{ W_w }$$ = weight of water $$\large{lbf}$$ $$\large{N}$$