A 10 feet thick clay that was unsaturated with a unit weight of 108 pcf and a water content of 20% gets saturated and also swells by 20% due to rain. G=2.70.
Compute:
a) Before Saturation: Dry unit weight, e, n, and S.
b) After saturation: Dry unit weight, e, n, water content, and how much the 10 feet thick clay layer swelled.