A standard proctor test is performed on a soil. The data is given below. Provide the following information:
a) Density plot, locating γd(max) and ω opt on the plot
b) Zero-air voids curve for the soil on the same plot
c) Curve representing S = 70%
γ (pcf) ω(%)
120.3 12
124.2 14
123.6 16
120.3 18