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In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5 cm; diameter of sample = 10.16 cm; height of water level at beginning of test (hi) = 30 cm; length of sample (L) = 20 cm. The soil had a coefficient of permeability (k) equal to 3.4 x 10°cm/sec. If the test was conducted for a period of 8 hours, what was the water level at the end of the test (h2)? %3D Time when water level is at h, is t (t,) a = area of standpipe Time when level is at 194 h, is t2 (t2) A = cross-sectional area of soil sample Soil sample

In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5 cm; diameter of sample = 10.16 cm; height of water level at beginning of test (hi) = 30 cm; length of sample (L) = 20 cm. The soil had a coefficient of permeability (k) equal to 3.4 x 10°cm/sec. If the test was conducted for a period of 8 hours, what was the water level at the end of the test (h2)? %3D Time when water level is at h, is t (t,) a = area of standpipe Time when level is at 194 h, is t2 (t2) A = cross-sectional area of soil sample Soil sample

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5 cm; diameter of sample = 10.16 cm; height of water level at beginning of test (h₁) = 30 cm; length of sample (L) = 20 cm. The soil had a coefficient of permeability (k) equal to 3.4 x 10⁻⁵ cm/sec. If the test was conducted for a period of 8 hours, what was the water level at the end of the test (h₂)? **Diagram Explanation:** The diagram illustrates a falling head permeability test setup, including: - **Standpipe**: A vertical tube where the water level begins at height \( h_1 \) at time \( t_1 \) and falls to height \( h_2 \) at time \( t_2 \). - **Soil Sample**: Positioned horizontally, with a length \( L \), below the standpipe. Water percolates through the soil. - The diagram highlights the relationship between the various components: - \( a \) represents the area of the standpipe. - \( A \) refers to the cross-sectional area of the soil sample. This setup measures how water moves through the soil, helping determine the soil's permeability.
Transcribed Image Text:In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5 cm; diameter of sample = 10.16 cm; height of water level at beginning of test (h₁) = 30 cm; length of sample (L) = 20 cm. The soil had a coefficient of permeability (k) equal to 3.4 x 10⁻⁵ cm/sec. If the test was conducted for a period of 8 hours, what was the water level at the end of the test (h₂)? **Diagram Explanation:** The diagram illustrates a falling head permeability test setup, including: - **Standpipe**: A vertical tube where the water level begins at height \( h_1 \) at time \( t_1 \) and falls to height \( h_2 \) at time \( t_2 \). - **Soil Sample**: Positioned horizontally, with a length \( L \), below the standpipe. Water percolates through the soil. - The diagram highlights the relationship between the various components: - \( a \) represents the area of the standpipe. - \( A \) refers to the cross-sectional area of the soil sample. This setup measures how water moves through the soil, helping determine the soil's permeability.
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