Earthworks
Where is the water table?
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0:20
A
A
B
B
C
C
D
D
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Lesson duration is: 15 minItems in this lesson
Where is the water table?
timer
0:20
A
A
B
B
C
C
D
D
Slide 1 - Quiz
Where is the sub-soil water?
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0:20
A
A
B
B
C
C
D
D
Slide 2 - Quiz
Where is the ground water?
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0:20
A
A
B
B
C
C
D
D
Slide 3 - Quiz
Which causes run-off into the sewer network?
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0:20
A
Surface Water
B
Ground Water
C
Water Table
D
Sub-Soil Water
Slide 4 - Quiz
Suitable for sands & gravels. Use in shallow excavations. Simple & easy to install. Fines are removed. Lift limited to 7.5m
timer
0:30
A
Bored Wells
B
Well Points
C
Sump Pumps
D
Electro-osmosis
Slide 5 - Quiz
Suitable for silts and clays. Use in open excavation and speeds up consolidation. Can be used when other methods are unsuitable. High installation and running costs.
timer
0:30
A
Bored Wells
B
Well Points
C
Sump Pumps
D
Electro-osmosis
Slide 6 - Quiz
Suitable in gravel to silty sands. Use in open excavations of longer duration and deep excavations. No limit on lift. Submersible pumps are used with little to no noise. Installation costs are high.
timer
0:30
A
Bored Wells
B
Well Points
C
Sump Pumps
D
Electro-osmosis
Slide 7 - Quiz
Suitable in sandy gravels. Use in open and progressive excavations e.g. pipe trenches. Quick to install in sands and economical for short periods. Difficult to install in coarse gravels and pumps must be operated continuously. Lift limited to ~5/6m and noisy.
timer
0:30
A
Bored Wells
B
Well Points
C
Sump Pumps
D
Electro-osmosis
Slide 8 - Quiz
BS EN 16907 defines Earthworks as “…a civil engineering process aimed at creating .............. by changing the geometry of the earth surface for construction or other activities.”
timer
0:30
A
earthworks
B
excavations
C
embankments
D
earth-structures
Slide 9 - Quiz
Name this piece of plant.
timer
0:20
A
Scraper
B
Grader
C
Dumper
D
Bulldozer
