A fine-grained soil (no sand) is found to have a liquid limit of 70 percent and a plastic limit of 38 percent. (a) What do the percentages for these limit values represent? (b) What is the plasticity...

A fine-grained soil (no sand) is found to have a liquid limit of 70 percent and a plastic limit of 38 percent.

(a) What do the percentages for these limit values represent?

(b) What is the plasticity index for this soil?

(c) On the plasticity chart for the Unified Soil

Classification System, what soil type is this?

(d) On the plasticity chart for the AASHTO classification system, what soil type is this?