Problem 7.11 only. 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 = 0.39Effective size, D₁0 = 0.32 mmDetermine the hydraulic conductivity of the sand at a relative densityof 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/secDetermine the hydraulic conductivity of the sand at a relative densityof 50%. Use Eq. (7.31).7.15 For a sand, the porosity n = 0.28 and k = 0.058 cm/sec. Determine k whenn = 0.45. Use Eq. (7.31).

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Answered: 7.11 The hydraulic conductivity of a…

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)

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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Question

Problem 7.11 only.

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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