11. A constant head permeability test is conducted on a certain soil. The diameter of the sample is 5.5 cm, the length is 18 cm, and the constant head is 45 cm. The mass of water collected in 50 seconds is 80 grams. Determine the coefficient of permeability in cm/min.

11. A constant head permeability test is conducted on a certain soil. The diameter of the sample is 5.5 cm, the length is 18 cm, and the constant head is 45 cm. The mass of water collected in 50 seconds is 80 grams. Determine the coefficient of permeability in cm/min.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter9: In Situ Stresses

Section: Chapter Questions

Problem 9.11P

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Concept explainers

Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.

Question

11. A constant head permeability test is conducted on a certain soil. The diameter of the
sample is 5.5 cm, the length is 18 cm, and the constant head is 45 cm. The mass of water
collected in 50 seconds is 80 grams. Determine the coefficient of permeability in cm/min.

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