A falling-head permeability test was conducted on a soil that is classified SM. The diameter and length of the test specimen were 10.55 cm and 17.00 cm, respectively. The cross-sectional area of the standpipe was 2.08 cm², and the water temperature was 20°C. It took 38.6 min for the water in the standpipe to drop from a height of 104.0 cm at the beginning of the test to 91.0 cm at the end of the test. Required Determine the soil's coefficient of permeability, in cm/s. Do not use scientific notation. Include 3 digits at the end of leading zeros, e.g., 0.000123 instead of 1.23 x 10-4. Your 0.

A falling-head permeability test was conducted on a soil that is classified SM. The diameter and length of the test specimen were 10.55 cm and 17.00 cm, respectively. The cross-sectional area of the standpipe was 2.08 cm², and the water temperature was 20°C. It took 38.6 min for the water in the standpipe to drop from a height of 104.0 cm at the beginning of the test to 91.0 cm at the end of the test. Required Determine the soil's coefficient of permeability, in cm/s. Do not use scientific notation. Include 3 digits at the end of leading zeros, e.g., 0.000123 instead of 1.23 x 10-4. Your 0.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.8P

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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

A falling-head permeability test was conducted on a soil that is classified SM. The
diameter and length of the test specimen were 10.55 cm and 17.00 cm,
respectively. The cross-sectional area of the standpipe was 2.08 cm², and the water
temperature was 20°C.
It took 38.6 min for the water in the standpipe to drop from a height of 104.0 cm at
the beginning of the test to 91.0 cm at the end of the test.
Required
Determine the soil's coefficient of permeability, in cm/s. Do not use scientific
notation. Include 3 digits at the end of leading zeros, e.g., 0.000123 instead of 1.23 x
10-4.
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