Concept explainers
(a)
Find the absolute permeability of the soil.
(a)
Answer to Problem 7.9P
The absolute permeability of the soil is
Explanation of Solution
Given information:
The length of the soil sample L is 400 mm.
The area of the sample A is
The diameter of the standpipe (d) is 11 mm.
The head difference
The head difference
The unit weight of water
The dynamic viscosity of water
Calculation:
Determine the area of the standpipe a using the relation.
Substitute 11 mm for d.
Determine the hydraulic conductivity k using the relation.
Substitute
Determine the absolute permeability of the soil using the relation.
Substitute
Therefore, the absolute permeability of the soil is
(b)
Find the head difference at 4 min time duration.
(b)
Answer to Problem 7.9P
The head difference at 4 min time duration is
Explanation of Solution
Given information:
The length of the soil sample L is 400 mm.
The area of the sample A is
The diameter of the standpipe (d) is 11 mm.
The head difference
The head difference
The unit weight of water
The dynamic viscosity of water
Calculation:
Determine the head difference at 4 min time duration using the relation.
Substitute
Therefore, the head difference at 4 min time duration is
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Chapter 7 Solutions
PRINCIPLES OF GEOTECH.ENGINEERING >LL+M
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