Question: A plastic limit (PL) test for a soil showed that moisture content was 18.0 percent. Data from a liquid limit test were as follows: Number

A plastic limit (PL) test for a soil showed that moisture content was 18.0 percent. Data from a liquid limit test were as follows:

Number of blows (N)Moisture content (%)
1639.8
2139.2
2638.4
3036.9


(a) Draw the flow curve and obtain the liquid limit.
(b) What is the plasticity index of the soil?

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