A sample of wet silty clay soil has a mass of 126 kg. The following data were obtained from laboratory tests on the sample: Wet density, \rho_{t}=2.1 g / cm ^{3}, G=2.7, water content, w = 15%.
Determine (i) dry density, \rho_{d}, (ii) porosity, (iii) void ratio, and (iv) degree of saturation.