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Enough falling head permeability test on the soil the time taken for the head to fall from H not 2HIST the test is repeated with same initial head as not the final head H is noted in the time T by two which one of the following equations gives the relation between H1H – H not?
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Enough falling head permeability test on the soil the time taken for t...
Introduction
The falling head permeability test is used to determine the permeability of soil. In this test, the time taken for the head to fall from H to 2H is measured. The test is repeated with the same initial head (H) and the time taken (T) is noted.

Equation
The equation that gives the relation between H1H – H not is:

H1H – H not = (T/2) x log10(2H/H)

Explanation
- H1H: Final head after time T
- H not: Initial head
- T: Time taken for the head to fall from H to 2H
- log10: Common logarithm

The equation is derived from Darcy's law, which states that the rate of flow of water through a porous medium is directly proportional to the hydraulic gradient. The hydraulic gradient is the difference in water level divided by the length of the soil sample.

In the falling head permeability test, the hydraulic gradient is calculated using the final head (H1H) and the initial head (H not). The time taken for the head to fall from H to 2H is used to calculate the hydraulic conductivity (K) of the soil.

Conclusion
The falling head permeability test is a simple and widely used method for determining the permeability of soil. The equation that relates the final head, initial head, and time taken is derived from Darcy's law. By using this equation, the hydraulic conductivity of the soil can be calculated.
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Enough falling head permeability test on the soil the time taken for the head to fall from H not 2HIST the test is repeated with same initial head as not the final head H is noted in the time T by two which one of the following equations gives the relation between H1H – H not?
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Enough falling head permeability test on the soil the time taken for the head to fall from H not 2HIST the test is repeated with same initial head as not the final head H is noted in the time T by two which one of the following equations gives the relation between H1H – H not? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Enough falling head permeability test on the soil the time taken for the head to fall from H not 2HIST the test is repeated with same initial head as not the final head H is noted in the time T by two which one of the following equations gives the relation between H1H – H not? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Enough falling head permeability test on the soil the time taken for the head to fall from H not 2HIST the test is repeated with same initial head as not the final head H is noted in the time T by two which one of the following equations gives the relation between H1H – H not?.
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