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Refer to the constant-head arrangement shown in Figure 7.5. For a test, the following are given: L = 450 mm A = area of the specimen = 23 cm² %3D Constant-head difference = h = 700 mm Water collected in 3 min = 350 cm³ %3D Calculate the hydraulic conductivity (cm/s).

Refer to the constant-head arrangement shown in Figure 7.5. For a test, the following are given: L = 450 mm A = area of the specimen = 23 cm² %3D Constant-head difference = h = 700 mm Water collected in 3 min = 350 cm³ %3D Calculate the hydraulic conductivity (cm/s).

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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### Problem 7.1 Refer to the constant-head arrangement shown in Figure 7.5. For a test, the following are given: - \( L = 450 \, \text{mm} \) - \( A = \text{area of the specimen} = 23 \, \text{cm}^2 \) - Constant-head difference \( h = 700 \, \text{mm} \) - Water collected in 3 min \( = 350 \, \text{cm}^3 \) Calculate the hydraulic conductivity (cm/s).
Transcribed Image Text:### Problem 7.1 Refer to the constant-head arrangement shown in Figure 7.5. For a test, the following are given: - \( L = 450 \, \text{mm} \) - \( A = \text{area of the specimen} = 23 \, \text{cm}^2 \) - Constant-head difference \( h = 700 \, \text{mm} \) - Water collected in 3 min \( = 350 \, \text{cm}^3 \) Calculate the hydraulic conductivity (cm/s).
**Figure 7.5: Constant-Head Permeability Test** This diagram illustrates a constant-head permeability test setup, which is used to measure the permeability of a soil specimen. ### Description: - **Soil Specimen**: The central column contains the soil specimen being tested. It's situated between two porous stones to allow water flow but prevent soil particles from escaping. - **Water Flow**: Water enters from a faucet above, creating a constant head of water. This continuous supply ensures a steady flow through the soil specimen. - **Height Measurements**: - **h**: Represents the height difference between the water level above and below the soil specimen. This is crucial for calculating the hydraulic gradient. - **L**: Denotes the length of the soil specimen through which the water flows. - **Overflow System**: Excess water overflows from the side into a surrounding container, maintaining the constant head. - **Graduated Flask**: Water exiting the specimen collects in a graduated flask, allowing measurement of discharge over time. ### Explanation: This setup is used to determine the coefficient of permeability of the soil, which is an important parameter in geotechnical engineering for assessing soil's ability to transmit water. By maintaining a constant water head and measuring the volume of water discharged over time, the permeability of the soil specimen can be calculated.
Transcribed Image Text:**Figure 7.5: Constant-Head Permeability Test** This diagram illustrates a constant-head permeability test setup, which is used to measure the permeability of a soil specimen. ### Description: - **Soil Specimen**: The central column contains the soil specimen being tested. It's situated between two porous stones to allow water flow but prevent soil particles from escaping. - **Water Flow**: Water enters from a faucet above, creating a constant head of water. This continuous supply ensures a steady flow through the soil specimen. - **Height Measurements**: - **h**: Represents the height difference between the water level above and below the soil specimen. This is crucial for calculating the hydraulic gradient. - **L**: Denotes the length of the soil specimen through which the water flows. - **Overflow System**: Excess water overflows from the side into a surrounding container, maintaining the constant head. - **Graduated Flask**: Water exiting the specimen collects in a graduated flask, allowing measurement of discharge over time. ### Explanation: This setup is used to determine the coefficient of permeability of the soil, which is an important parameter in geotechnical engineering for assessing soil's ability to transmit water. By maintaining a constant water head and measuring the volume of water discharged over time, the permeability of the soil specimen can be calculated.
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