# Shrinkage Limit

Written by Jerry Ratzlaff on . Posted in Geotechnical Engineering

Shrinkage limit, abbreviated as SL, is the maximum water content at which further reduction in the water content will not cause decrease in volume of soil.

## Shrinkage limit formula

 $$\large{ SL = \frac{ \left(m_1 \;-\; m_2\right) \;-\; \left(V_1 \;-\; V_2\right) \; PL }{ m_2 } }$$

### Where:

$$\large{ SL }$$ = shrinkage limit

$$\large{ m_1 }$$  = inlet wet mass of soil

$$\large{ m_2 }$$  = final dry mass of soil

$$\large{ V_1 }$$  = inlet volume of soil

$$\large{ V_2 }$$  = final volume of dry soil

$$\large{ PL }$$  =  plastic limit