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7.11 The hydraulic conductivity of a sandy soil is 0.011 cm/sec at a room tempera- ture of 24°C. What would be the hydraulic conductivity at 20°C? Use Eq. (7.15).

7.11 The hydraulic conductivity of a sandy soil is 0.011 cm/sec at a room tempera- ture of 24°C. What would be the hydraulic conductivity at 20°C? Use Eq. (7.15).

Principles of Geotechnical Engineering (MindTap Course List)
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter7: Permeability
Section: Chapter Questions
Problem 7.14P
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7.11 The hydraulic conductivity of a sandy soil is 0.011 cm/sec at a room tempera- ture of 24°C. What would be the hydraulic conductivity at 20°C? Use Eq. (7.15). 7.12 The hydraulic conductivity of a sand at a void ratio of 0.85 is 0.08 cm/sec. Estimate its hydraulic conductivity at a void ratio of 0.68. Use Eq. (7.31). 7.13 For a sandy soil, the following are given: • Maximum void ratio = 0.75 • Minimum void ratio = 0.39 Effective size, D₁0 = 0.32 mm Determine the hydraulic conductivity of the sand at a relative density of 80%. Use Eq. (7.32). 7.14 For a sandy soil, the following are given: • Maximum void ratio = 0.86 • Minimum void ratio = 0.4 • Hydraulic conductivity at a relative density of 70% = 0.003 cm/sec Determine the hydraulic conductivity of the sand at a relative density of 50%. Use Eq. (7.31). 7.15 For a sand, the porosity n = 0.28 and k = 0.058 cm/sec. Determine k when n = 0.45. Use Eq. (7.31).
Transcribed Image Text:7.11 The hydraulic conductivity of a sandy soil is 0.011 cm/sec at a room tempera- ture of 24°C. What would be the hydraulic conductivity at 20°C? Use Eq. (7.15). 7.12 The hydraulic conductivity of a sand at a void ratio of 0.85 is 0.08 cm/sec. Estimate its hydraulic conductivity at a void ratio of 0.68. Use Eq. (7.31). 7.13 For a sandy soil, the following are given: • Maximum void ratio = 0.75 • Minimum void ratio = 0.39 Effective size, D₁0 = 0.32 mm Determine the hydraulic conductivity of the sand at a relative density of 80%. Use Eq. (7.32). 7.14 For a sandy soil, the following are given: • Maximum void ratio = 0.86 • Minimum void ratio = 0.4 • Hydraulic conductivity at a relative density of 70% = 0.003 cm/sec Determine the hydraulic conductivity of the sand at a relative density of 50%. Use Eq. (7.31). 7.15 For a sand, the porosity n = 0.28 and k = 0.058 cm/sec. Determine k when n = 0.45. Use Eq. (7.31).
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