A permeameter with a cross-sectional area of 400 cm2 contains 3 soils in 50 cm thick layers. A total head difference of 2.0 metres results in a flow rate of 100 cm3/s. The head loss through the top layer of soil is 50 cm. The hydraulic conductivity of the bottom soil layer is 0.10 cm/s.
a) What is the hydraulic conductivity of the other two soils?
b) If the total head, elevation head, and pressure head all equal zero at the bottom of the bottom soil layer, draw a graph of pressure head versus depth for the soil column.