Permeability

1. For clay soils, soils with greater void ratios have ____ permeability.
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2. Due to change in temperature, the viscosity (μ) of the liquid reduced by 40%. What is the change in the permeability of the soil?
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3. Permeable soil has a K (cm / sec) value of ____.
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4. Coefficient of permeability is also called as which of the following?
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5. A constant head permeability test on a medium soil sample having a cross sectional area (A) of 7585 mm2 yielded the following data: Distance between stand-pipes (L) = 100 mm, Constant head difference (h) = 70.4 mm, Quantity of water collected (Q) = 500 * 103 mm3, Time of collection (t) = 132 s. Determine the coefficient of permeability of the sand specimen.
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6. In a falling head permeability test, a soil sample of 7585 mm2 cross-section (A) and 210.2 mm length (L) was subjected to a flow of water from a stand-pipe having cross-sectional area (a) of 730 mm2. The stand-pipe level changed from 1650 mm (h1) to 550 mm (h2) above the reservoir datum during a time interval (t) of 182 sec. Determine the coefficient of permeability of the soil.
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