45 cm A small-scale flow experiment is conducted in the box shown to scale in the Figure below with a model sheet pile wall A'-D. Out-of-plane width of the model is 10 cm. Permeability k of the soil is 0.002 cm/s. (a) Identify all equipotential EQ and flow line FL boundary conditions directly on the figure below. (b) Using lines 1, 2, 3, and 4 on the figure as flow lines, sketch the equipotential lines for a square flownet directly on the figure. (c) Using your flownet, estimate the total volume of flow through the model in 5 minutes, in cm³. (d) A standpipe is inserted at point 1, 35 cm below the upstream water level A-A'. Using the flow net shown, estimate the height of water in this standpipe below the upstream water level A-A'? (e) During the experiment, with water flowing, the downstream ground surface is altered to location F-G. Indicate the revised equipotential boundary condition on the downstream side. Sketch likely revised flow line locations in the downstream region using dashed lines directly on the Figure. A water 40 cm 15 cm line 1 2 B 3 4 F C E A' 20 cm B' 1 2 soil D 40 cm F' water E' G 'C'
45 cm A small-scale flow experiment is conducted in the box shown to scale in the Figure below with a model sheet pile wall A'-D. Out-of-plane width of the model is 10 cm. Permeability k of the soil is 0.002 cm/s. (a) Identify all equipotential EQ and flow line FL boundary conditions directly on the figure below. (b) Using lines 1, 2, 3, and 4 on the figure as flow lines, sketch the equipotential lines for a square flownet directly on the figure. (c) Using your flownet, estimate the total volume of flow through the model in 5 minutes, in cm³. (d) A standpipe is inserted at point 1, 35 cm below the upstream water level A-A'. Using the flow net shown, estimate the height of water in this standpipe below the upstream water level A-A'? (e) During the experiment, with water flowing, the downstream ground surface is altered to location F-G. Indicate the revised equipotential boundary condition on the downstream side. Sketch likely revised flow line locations in the downstream region using dashed lines directly on the Figure. A water 40 cm 15 cm line 1 2 B 3 4 F C E A' 20 cm B' 1 2 soil D 40 cm F' water E' G 'C'
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A small-scale flow experiment is conducted in the box shown to scale in the Figure below with a model sheet pile wall A'-D. Out-of-plane width of the model is 10 cm. Permeability k of the soil is 0.002 cm/s. (a) Identify all equipotential EQ and flow line FL boundary conditions directly on the figure below. (b) Using lines 1, 2, 3, and 4 on the figure as flow lines, sketch the equipotential lines for a square flownet directly on the figure. (c) Using your flownet, estimate the total volume of flow through the model in 5 minutes, in cm³. (d) A standpipe is inserted at point 1, 35 cm below the upstream water level A-A'. Using the flow net shown, estimate the height of water in this standpipe below the upstream water level A-A'? (e) During the experiment, with water flowing, the downstream ground surface is altered to location F-G. Indicate the revised equipotential boundary condition on the downstream side. Sketch likely revised flow line locations in the downstream region using dashed lines directly on the Figure.
Transcribed Image Text:45 cm
A small-scale flow experiment is conducted in the box shown to scale in the Figure below with a model
sheet pile wall A'-D. Out-of-plane width of the model is 10 cm. Permeability k of the soil is 0.002 cm/s.
(a) Identify all equipotential EQ and flow line FL boundary conditions directly on the figure below.
(b) Using lines 1, 2, 3, and 4 on the figure as flow lines, sketch the equipotential lines for a square flownet
directly on the figure.
(c) Using your flownet, estimate the total volume of flow through the model in 5 minutes, in cm³.
(d) A standpipe is inserted at point 1, 35 cm below the upstream water level A-A'. Using the flow net
shown, estimate the height of water in this standpipe below the upstream water level A-A'?
(e) During the experiment, with water flowing, the downstream ground surface is altered to location F-G.
Indicate the revised equipotential boundary condition on the downstream side. Sketch likely revised
flow line locations in the downstream region using dashed lines directly on the Figure.
A
water
40 cm
15 cm
line 1
2
B
3
4
F
C
E
A'
20 cm
B'
1
2
soil
D
40 cm
F'
water
E'
G
'C'
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