A soil stratum is composed of three different soil layers. The depths and permeability for these soil layers are tabulated: Soil Type Permeability (m/s) Depth (m) 1.25 x 10-7 2.95 × 10-8 3.85 x 10-9 Sand 1.35 Silt 2.75 Clay 0.975 Calculate the ratio of the equivalent permeability in horizontal to vertical direction.

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter8: Stresses In A Soil Mass
Section: Chapter Questions
Problem 8.13P
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2. A soil stratum is composed of three different soil layers. The depths and permeability
for these soil layers are tabulated:
Soil Type
Permeability (m/s)
Depth (m)
1.25 × 10-7
2.95 × 10-8
3.85 x 10-9
Sand
1.35
Silt
2.75
Clay
0.975
Calculate the ratio of the equivalent permeability in horizontal to vertical direction.
Permeability of which of the soil govern during horizontal and vertical flow. Explain
with reason.
Transcribed Image Text:2. A soil stratum is composed of three different soil layers. The depths and permeability for these soil layers are tabulated: Soil Type Permeability (m/s) Depth (m) 1.25 × 10-7 2.95 × 10-8 3.85 x 10-9 Sand 1.35 Silt 2.75 Clay 0.975 Calculate the ratio of the equivalent permeability in horizontal to vertical direction. Permeability of which of the soil govern during horizontal and vertical flow. Explain with reason.
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