A cohesive soil sample was taken from an SPT and returned to the laboratory in a glass jar. It was found to weigh 140.5 grams. The sample was then placed in a container of V = 500 cm3 and 423 cm3 of water were added to fill the container. From these data, what was the unit weight of the soil in kN/m3 and pcf?
For formulas of soil phase relationships read Soil Phase Relationships article.
Notice that the 140.5 grams is a mass. Therefore, the ratio of mass to volume is the density rho
for conversion from SI units to US units: