Calculation of shrinkage limit, Ws

Mass of wet soil = Mo =(M1-M3)=-------------g

Mass of dry soil = Ms =(M2–M3)=-------------g

Volume of shrinkage dish = Volume of wet soil = Vo = ---------------

Volume of dry soil = Vd = ---------------

Vd = Mm / 13.6
where,
13.6 g/cm3 is the density of mercury.

Srinkage limit,Ws is
Ws= ((Mo-Ms)-(Vo-Vd)×ρw)/Ms

Shrinkage ratio, Sr =((Vo-Vd)/Vo)×100