Method | Lft 41/4 | Kvfd 96/4 | Fbmd 17/0.5a | Fbmd’ 43/1b |
Constant head seepage cell, klab (×10−7 m/s) | klab = 5.93 | klab = 0.69 | - | klab = 1.71 (scalped sample) |
Double-ring infiltrometer infiltration capacity, f, “permeability” kin situ (×10−7 m/s) | kin situ ≈ 7.5 (+27% of klab) | kin situ ≈ 0.6 (−10% of klab) | kin situ ≈ 17 (full sample) | - |
Hazen’s formula, Equation (1) empirical permeability, kest (×10−7 m/s). | kest = 25.6 @ C=0.01; D10 = 0.016 (+430% of klab) | kest = 2.0 @ C = 0.01; D10 = 0.0045 (+290% of klab) | kest = 40 @ C = 0.01; D10 = 0.02 | kest = 6.4 @ C = 0.01; D10 = 0.008 (+376% of klab) |