Question

A constant-head permeameter has a diameter of 2.5 cm. A 5.0 cm soil sample with the...

A constant-head permeameter has a diameter of 2.5 cm. A 5.0 cm soil sample with the same cross-sectional area is place in the permeameter. When a head difference of 5 cm is applied between the inlet and outlet ports, the permeameter discharges 50 cm3 of water in 90 s.

(a) Calculate the hydraulic conductivity of the soil in m/s and in ft/day. (b) What is the intrinsic permeability of the soil at 20 ◦C?

(c) What would be the soil’s hydraulic conductivity for salt water with a density of 1055 kg/m3 and a dynamic viscosity of 1.15 × 10−3 N · s/m2 ?

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