Q3. A flow net for flow around a single row of sheet piles in a permeable soil layer is shown in Figure below with a scale as shown. Given that kx = kz= k = 4 x 10-³ cm/sec, determine H=(5+x+y) m a. How high (above the ground surface) the water will rise if piezometers are placed at points a and b b. The total rate of seepage through the permeable layer per c. The approximate average hydraulic gradient at c factor of safety against piping d. a Dam unit length Scale 5 m b Impermeable layer

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
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Chapter7: Seepage
Section: Chapter Questions
Problem 7.7CTP
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A flow net for flow around a single row of sheet piles in a permeable soil layer is

shown in Figure below with a scale as shown. Given that kx = kz=k = 4 x 10-3

cm/sec, determine

  1. How high (above the ground surface) the water will rise if piezometers are placed at points a and b
  2. The total rate of seepage through the permeable layer per unit length
  3. The approximate average hydraulic gradient at c
  4. factor of safety against piping

x=1.6 y=2.8

Q3. A flow net for flow around a single row of sheet piles in a permeable soil layer is
shown in Figure below with a scale as shown. Given that kx = kz= k = 4 x 10-³
cm/sec, determine
H=(5+x+y) m
a.
How high (above the ground surface) the water will rise if piezometers are
placed at points a and b
b.
c.
d.
a
The total rate of seepage through the permeable layer per unit length
The approximate average hydraulic gradient at c
factor of safety against piping
Dam
Ah
Scale
5 m
b
Impermeable layer
Transcribed Image Text:Q3. A flow net for flow around a single row of sheet piles in a permeable soil layer is shown in Figure below with a scale as shown. Given that kx = kz= k = 4 x 10-³ cm/sec, determine H=(5+x+y) m a. How high (above the ground surface) the water will rise if piezometers are placed at points a and b b. c. d. a The total rate of seepage through the permeable layer per unit length The approximate average hydraulic gradient at c factor of safety against piping Dam Ah Scale 5 m b Impermeable layer
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