Percent finer 100 00 80 00 60 10 20 20 T 10 155 1.0 0.5 0.1 0.05 0.01 Grain-size distribution (mm) Fig. P2.5 2.5. For a granular material with the grain-size distribution shown in Fig. P2.5, compare the estimates of hydraulic conductivity using all the relevant empirical methods discussed in Section 2.5. Porosity of the soil n = 0.3.