Extracted text: Three soil specimens (Soil 1, Soil 2 and Soil 3), each 150 mm long and 100 mm diameter are placed in series in a constant head flow setup as shown in the figure. Suitable screens are provided at the boundaries of the specimens to keep 560 mm them intact. The values of coefficient of permeability of soil 1, soil 2, and soil 3 are 0.01, 0.003 and 0.03 cm/sec Soil 3 100 mm Soil 1 Soil 2 150 mm+ 150 mm T 150 mm+ respectively. The value of h in the setup is