The figure shows the layers of soil in a tube that is 100mm x 100 mm in cross section. Water is supplied to maintain a constant head difference of 450 mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are given below. Compute the equivalent hydraulic conductivity in m/hr. Water supply h=450 mm Out flow Direction of flow Soil Soil Soil A 200 200 200 mm mm mm K, = 2 x 10 4 cm/s KR = 3.7 x 10 2 cm/s Kc = 1.2 x 10 -5 cm/s Select one: a. 0.002124 b. 0.002412 c. 0.001224 d. 0.004221

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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The figure shows the layers of soil in a tube that is 100mm x 100 mm in cross section. Water is supplied to maintain a constant head difference
of 450 mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are given below. Compute the
equivalent hydraulic conductivity in m/hr.
Water supply
h=450 mm
Out flow
Direction of flow Soil Soil Soil
A
B
200 200 200
mm mm
mm
K, = 2 x 10-4 cm/s
KR = 3.7 x 10-2 cm/s
Kc = 1.2 x 10
-5
cm/s
Select one:
a. 0.002124
b. 0.002412
c. 0.001224
d. 0.004221
Transcribed Image Text:The figure shows the layers of soil in a tube that is 100mm x 100 mm in cross section. Water is supplied to maintain a constant head difference of 450 mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are given below. Compute the equivalent hydraulic conductivity in m/hr. Water supply h=450 mm Out flow Direction of flow Soil Soil Soil A B 200 200 200 mm mm mm K, = 2 x 10-4 cm/s KR = 3.7 x 10-2 cm/s Kc = 1.2 x 10 -5 cm/s Select one: a. 0.002124 b. 0.002412 c. 0.001224 d. 0.004221
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