Derive expression to determine coefficient of permeability of coarse grained soil by lab test
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Explanation:
Water flows from the overhead tank consisting of three tubes – The inlet tube, the over-flow tube and the outlet tube. The constant hydraulic gradient i causing the flow is the head h (i.e., difference in water levels of the overhead and bottom tanks) divided by the length L of the sample.
If the length of the sample is large, the head lost over a length of specimen is measured by inserting piezometric tubes. If Q is the total quantity of flow in a time interval t, we have Darcy’s law.
Where A = total cross-sectional area of sample when steady state of flow is reached in time t.
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sorry I don't know sorry mate
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