The figure shows layers of soil in a tube that is 100mm x 100mm in cross – section. Wate supplied to maintain a constant head difference of 400mm across the sample. Th ydraulic conductivities of the soils in the direction of flow through them are as follows: Soil k (cm/sec) Porosity, n A 1х10-2 25% B 3x 10-3 32% 4.9 x 104 22% Water supply Constant head difference = 400 mm В 150 mm 150 mm 200 mm Calculate the equivalent k in cm/sec

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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1. The figure shows layers of soil in a tube that is 100mm x 100mm in cross - section. Water
is supplied to maintain a constant head difference of 400mm across the sample. The
hydraulic conductivities of the soils in the direction of flow through them are as follows:
Soil
k (cm/sec)
Porosity, n
А
1х10-2
25%
В
3х 10-3
32%
4.9 x 10-4
22%
Water supply
Constant head
difference = 400 mm
150 mm 150 mm
200 mm
a. Calculate the equivalent k in cm/sec.
b. Calculate the rate of water supply in cm³/hr.
c. Calculate the seepage velocity through soil C in m/sec.
Transcribed Image Text:1. The figure shows layers of soil in a tube that is 100mm x 100mm in cross - section. Water is supplied to maintain a constant head difference of 400mm across the sample. The hydraulic conductivities of the soils in the direction of flow through them are as follows: Soil k (cm/sec) Porosity, n А 1х10-2 25% В 3х 10-3 32% 4.9 x 10-4 22% Water supply Constant head difference = 400 mm 150 mm 150 mm 200 mm a. Calculate the equivalent k in cm/sec. b. Calculate the rate of water supply in cm³/hr. c. Calculate the seepage velocity through soil C in m/sec.
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