A$.$ SOIL CLASSIFICATION $($AASHTO$)$

The experimental data of soil classification tests $($grain size analysis, liquid limit and plastic limit$)$

are provided in the tables $1-3,$ below.

a$.$ Determine the plasticity index $($PI$)$

i$.$ Liquid limit $($LL$)$ of the soil $($determine LL using multipoint method, plot the data$)$

ii$.$ Plastic limit $($PL$)$

b$.$ Classify the soil according to AASHTO.

T$.1.1$: Grain size analysis test data: Total Mass of dry sample $140\mathrm{.}8($g$)$

Table $2$: Liquid limit test Data

Table $3$: Plastic limit test Data