11-21.
During construction, what check is
performed to test the compactive
effort?
1.
Moisture test
2.
CBR test
3.
Soil compaction test
4.
Density test
11-22.
When determining in-place density,
which of the following methods
should you use?
1.
Penetration method
2.
Load-bearing method
3.
Nuclear moisture-density
meter method
4.
Hydrometer method
11-23.
Before you perform the sand-
displacement method for in-place
density, certain calibration must
be performed. Which of the
following calibration must be
completed?
1.
Determine the jar volume
2.
Determine the sand density
3.
Determine the volume of the
cone, template, and surface
irregularities
4.
Each of the above
11-24.
What is the depth of the hole for
the sand-displacement method?
1.
5 inches
2.
6 inches
3.
3 inches
4.
4 inches
11-25.
A soil-sample container must
be kept closed to prevent what
problem?
1.
Absorption of moisture
2.
Sample loss
3.
Moisture loss
11-26.
What method is recommended to
determine the moisture content
of a sample?
11-27.
The nuclear moisture-density
meter determines the moisture
in the soil by what method?
1.
Measures the hydrogen
concentration in the soil
2.
Counts the gamma rays emitted
3.
Measures the moisture
evaporated by radiation
4.
Measures oxygen in the soil
11-28.
Before operating the nuclear
moisture-density meter, you must
receive specialized training and
obtain certification.
1.
True
2.
False
11-29.
The California bearing ratio
test is what type of test?
1.
Density
2.
Load bearing
3.
Moisture
4.
Soil analysis
11-30.
Procedures for sample preparation
for the CBR test are found in what
publication?
1.
MIL-STD-621A
2.
NAVFAC MO-330
3.
ASTM D 422
4.
NAVFAC P-437
11-31.
Which of the following tools
are part of the loading-press
assembly?
1.
CBR mold
2.
Tripod attachment
3.
Surcharge weight
4.
Soaking tank
11-32.
How many successive tests are
performed for the CBR test?
1.
Five
2.
Two
3.
Three
4.
Four
1.
The alcohol burn-off method
2.
The Speedy moisture tester
method
3.
The oven-dried method
4.
The air-dried method
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