A soil sample has a total unit weight of 16.97 kN/m3, a void ratio of 0.84, and a specific gravity of soil solids G = 2.68. Determine the moisture content of the soil sample.

A clay sample has a dry density of 1.85 g/cm3 and a specific gravity Gs = 2.71. Estimate the shrinkage limit (ws) of the clay (take density of water ρw = 1.0 g/cm3).

If the coefficient of uniformity (Cu) of a soil is 16 and the coefficient of curvature (Cc) is 1.0, what is the ratio D60 / D30?