Q2. The results of a Standard Proctor compaction test are shown in the table below: w (%) 8.1 9.8 11.5 12.3 13.2 15 Bulk unit weight (kN/m³) 18.7 19.5 20.5 20.4 20.1 19.5 (i) (ii) Construct the compaction curve and determine the maximum dry unit weight and optimum water content. On the same graph, plot the zero-air-voids line (specific gravity of soil is 2.6). What is the dry unit weight and water content at 95% standard compaction, dry of optimum? (iii) Determine the degree of saturation at the maximum dry density.