A soil sample has a porosity of 40%. The specific gravity of solids is 2.70. What is its void ratio?

At points B (depth 3 m) and C (depth 6 m), calculate the rest lateral earth pressure Po per unit length of wall given Ko = 1 − sin(φ), φ = 20° (sin 20° = 0.342), unit weight γ = 17 kN/m3.

A sand sample above the water table has a natural moisture content of 15% and a total unit weight of 18.84 kN/m3. Laboratory tests on the dried sample give minimum and maximum void ratios of 0.50 and 0.85, respectively. Assuming G = 2.65 and unit weight of water = 9.81 kN/m3, calculate the degree of saturation and relative density.