Dry Unit Weight

Dry unit weight, abbreviated as \( \gamma_d \), is the ratio of the weight of soil to the volume of soil or when the soil voids are filled with air and no water. 

 

Dry Unit Weight formulas
\(\large{ \gamma_d =  \frac{ W_s }{ V_t }    }\)
Symbol	English	Metric
\(\large{ \gamma_d } \)  (Greek symbol gamma) = dry unit weight	\(\large{ \frac{lbm}{ft^3} }\)	\(\large{ \frac{N}{m^3} }\)
\(\large{ V_t } \) = total volume of soil	\(\large{ft^3}\)	\(\large{m^3}\)
\(\large{ W_s } \) = weight of soil	\(\large{lbf}\)	\(\large{N}\)