The ground conditions at a site figure. The water table at the site which was initially at
The ground conditions at a site figure. The water table at the site which was initially at
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![The ground conditions at a site are as shown in the
figure. The water table at the site which was initially at
a depth of 5m below the ground level got permanently
lowered to a depth of 15 m below the ground level due
to pumping of water over a few years. Assume the
following data
GL
5 m
Original water table
15 m
20 m
Lowered water table
Clay soil layer
5 m
1. unit weight of water = 10KN/m3
2. unit weight of sand above water table = 18
kN/m3
3. unit weight of sand and clay below the water
table = 20 kN/m³
4. coefficient of volume compressibility
= 0.25 m?/MN
What is the change in the effective stress in
kN/m? at mid-depth of the clay layer due to the
lowering of the water table?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1ba28d51-0bd0-4c40-843e-2ec131203fb3%2F96231f00-4af8-4db8-a5a7-cd5841a79173%2Fbjiabih_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The ground conditions at a site are as shown in the
figure. The water table at the site which was initially at
a depth of 5m below the ground level got permanently
lowered to a depth of 15 m below the ground level due
to pumping of water over a few years. Assume the
following data
GL
5 m
Original water table
15 m
20 m
Lowered water table
Clay soil layer
5 m
1. unit weight of water = 10KN/m3
2. unit weight of sand above water table = 18
kN/m3
3. unit weight of sand and clay below the water
table = 20 kN/m³
4. coefficient of volume compressibility
= 0.25 m?/MN
What is the change in the effective stress in
kN/m? at mid-depth of the clay layer due to the
lowering of the water table?
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