Parameters

Reference Soils

A1

E1

E2

E5

Minimum porosity n_min

0.40

0.34

0.27

0.31

Maximum porosity n_max

0.52

0.42

0.40

0.42

Coefficient of Curvature C_C = (d₃₀)²/(d₆₀*d₁₀)

1.00

3.30

6.70

13.80

Coefficient of Uniformity C_U = d₆₀/d₁₀

2.10

6.80

13.50

23.40

Relative density D_r = (n_max − n)/(n_max − n_min)

0.50

0.75

0.50

0.40

0.75

0.92

0.60

0.85

0.95