a. (1 pt) How many equipotential drops are there?
b. (1 pt) How many flow channels are there?
c. (3 pts) Compute the flow rate beneath the dam. [ft^3/s/ft].
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Short Answer
Click here to access the equation sheet.
11. (1 pt) (seep-finelem) In a finite element mesh, a quadratic triangle would have nodes.
12. (seep-analytical) For the following flow net, assume
H1=20 ft,
H2 = 4 ft,
D = 30 ft,
HA = 15 ft,
k = 2e-4 cm/s
Use the bottom of the permeable layer as the datum for your head values in parts d and e.
a. (1 pt) How many equipotential drops are there?
b. (1 pt) How many flow channels are there?
c. (3 pts) Compute the flow rate beneath the dam. [ft^3/s/ft].
d. (1.5 pts) What is the total head at point A? [ft]
e. (1 pt) What is the pressure head at point A? [ft]
f. (1 pt) What is the pore pressure at point A? [psf]
13. (1 pt) (seep-dewater) A gravel-filled trench with a drainage pipe at the the bottom is called a(n) .
14. (3 pts) (seep-goveq) What were the three primary assumptions we made when deriving the governing differential equation?
15. (1 pt) (seep-head, darcy) Seepage velocity is than Darcy velocity.
16. (1 pt) (seep-head, darcy) The minor principal axis of permeability is to the bedding planes in a layered system.
17. (1 pt) (seep-head, darcy) There are three components of head as defined by Bernoulli's equation. In seepage/groundwater problems we typically ignore the head.