Extracted text: For setup shown in the figure, the cross-sectional 70 mm area of the soil is 2200 mm2, knowing that in 240 seconds 40 mm 0.8 Liter of water flows through the samples. 25 mm Determine: 1- Elevation, pressure and total heads in points A, B, C and D. 2- Estimate the coefficient of permeability for each sample. 90 mm 30 mm 100 mm Sample I Sample 2