QUESTION $1$

a$)$ Two samples of soil are extracted from a construction site. The data from samples $1$

and $2$ of the laboratory test results are found in the table below. For each sample:

i$)$ Determine the plastic limit

ii$)$ Plot the grading curves

iii$)$ Classify the sample fully according to the AASHTO System and

iv$)$ The Unified System

b$)$ On a simple graph of volume vs moisture content $(\%)$ show by means of labels what is

meant by LL$,$ PL$,$ PI and SL for sample $2.$

c$)$ Which sample has the higher clay content?