2- Given the following section of an earth dam and underneath subsurface: a) Solve Laplace equation for this system geometrically (Hint: use the scale of 1 in = 100 ft or any scale of your choice), b) Compute the total flow rate from the upstream to the downstream. The length of the dam normal to the page is 850 ft. c) Compute and plot the uplift pressure under the dam. d) Compute the factor of safety against boiling at a point on the dam's toe (the downstream).
2- Given the following section of an earth dam and underneath subsurface: a) Solve Laplace equation for this system geometrically (Hint: use the scale of 1 in = 100 ft or any scale of your choice), b) Compute the total flow rate from the upstream to the downstream. The length of the dam normal to the page is 850 ft. c) Compute and plot the uplift pressure under the dam. d) Compute the factor of safety against boiling at a point on the dam's toe (the downstream).
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Only Handwritten solution please

Transcribed Image Text:2- Given the following section of an earth dam and underneath subsurface:
a) Solve Laplace equation for this system geometrically (Hint: use the scale of 1 in = 100 ft
or any scale of your choice),
b) Compute the total flow rate from the upstream to the downstream. The length of the
dam normal to the page is 850 ft.
c) Compute and plot the uplift pressure under the dam.
d) Compute the factor of safety against boiling at a point on the dam's toe (the
downstream).
40 ft
el. 713.0 ft
el. 701.5 ft
2
10
Earth dam
Reservoir
(assume impervious)
el. 620.0 ft
el. 616.0 ft
8 ft x 52 ft concrete cutoff wall
Gravelly sand with silt and cobbles
.k = 6 x 10-2 cm/s
el. 503.7 ft
Stiff clay (assume impervious)
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