Figure 7.23 shows three layers of soil in a tube that is 200 mm X 200 mm in cross section. Water is supplied to maintain a constant-head difference of h across the sample so that the rate of flow is 500 cm³/hr. The hydraulic conductivities of the soils in the direction of flow through them are as follows. Soil A B C k (cm/s) 10-2 3 x 10-3 4.9 X 10 4 Soil A B с Water supply k (cm/s) 10-2 3 x 10-3 4.9 × 10 4 EXAMPLE 7.14 Refer to Example 7.13 and Figure 7.23. Determine the magnitudes of h, and hg. B Water supply 150 mm 150 mm 150 mm → B ha с 150 mm 150 mm 150 mm Constant-head difference h Constant-head difference = h

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Figure 7.23 shows three layers of soil in a tube that is 200 mm X 200 mm in cross
section. Water is supplied to maintain a constant-head difference of h across the
sample so that the rate of flow is 500 cm³/hr. The hydraulic conductivities of the soils
in the direction of flow through them are as follows.
Soil
A
B
C
k (cm/s)
10-2
3 x 10-3
4.9 X 10 4
Soil
A
B
C
Water supply
k (cm/s)
10-2
3 x 10-3
4.9 × 10 4
EXAMPLE 7.14
Refer to Example 7.13 and Figure 7.23. Determine the magnitudes of h, and hg.
B
Water supply
150 mm 150 mm 150 mm →
B
ha
с
150 mm 150 mm 150 mm
Constant-head
difference h
Constant-head
difference = h
Transcribed Image Text:Figure 7.23 shows three layers of soil in a tube that is 200 mm X 200 mm in cross section. Water is supplied to maintain a constant-head difference of h across the sample so that the rate of flow is 500 cm³/hr. The hydraulic conductivities of the soils in the direction of flow through them are as follows. Soil A B C k (cm/s) 10-2 3 x 10-3 4.9 X 10 4 Soil A B C Water supply k (cm/s) 10-2 3 x 10-3 4.9 × 10 4 EXAMPLE 7.14 Refer to Example 7.13 and Figure 7.23. Determine the magnitudes of h, and hg. B Water supply 150 mm 150 mm 150 mm → B ha с 150 mm 150 mm 150 mm Constant-head difference h Constant-head difference = h
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