13-24.
When you dig test holes with the
hand auger, the samples may be
completely disturbed, but they are
satisfactory for determining which
of the following information?
1.
Compaction capabilities
2.
Moisture content
3.
Soil profile
4.
All of the above
13-25.
A soil sample tagged CB-P3-1 was
taken from which of the following
locations?
1.
Project CB, bag No. P3, pit
No. 1
2.
Project CB, pit No. 3,
location No. 1
3.
Construction battalion pit
No. 3, area No. 1
4.
Construction borrow pit
No. P3, bag No. 1
13-26.
Disturbed samples are satisfactory
for use in which of the following
tests?
1.
Unconfined compression
2.
Mechanical analysis
3.
Specific gravity
4.
Both 2 and 3 above
13-27.
YOU are taking a moisture content
sample that you know will be
tested within the next 4 hours.
At a minimum, what action, if any,
should you take to prevent the
evaporation of moisture from the
soil?
1.
Seal the canister with
friction tape
2.
Dip the canister in paraffin
3.
Wrap the canister with a
paraffin coated cloth
4.
None, since the test will be
performed within 1 day
13-28.
Soil samples obtained by samplers
are used for the testing of which
of the following soil properties?
1.
In-place density
2.
Shear strength
3.
Compressive strength
4.
All of the above
13-29.
A chunk sample would be best
suited for sampling which of the
following soil types?
13-30.
YOU are obtaining an undisturbed
soil sample using the CBR mold.
After removing the CBR mold and
sample from the hole, which of the
following steps should you take
next ?
1.
Trim out a %-inch recess in
the top of the mold
2.
Coat the top of the sample
with paraffin
3.
Remove the upper collar of the
mold
4.
Trim out both ends of the mold
before sealing the sample ends
with paraffin
13-31.
One way to be certain that a soil
sample used is representative of
the whole sample is by using which
of the following methods?
1.
Straining
2.
Soaking
3.
Halving
4.
Quartering
13-32.
When quartering a sample, what
quarter(s), if any, should you
discard?
1.
Any single quarter
2.
Two adjacent quarters
3.
Two diagonally opposite
quarters
4.
None
13-33.
For a complete soil test, identify
the logical sequence of the
following procedures.
A.
Determine the specific gravity
of representative samples.
B.
Determine the moisture content
of representative samples.
c.
Determine moisture-density
relationship.
D.
Determine grain size and
distribution.
E.
Determine the field moisture
content.
F.
Determine Atterberg limits.
1.
A, B, F, C, E, D
2.
B, C, A, D, F, E
3.
B, D, A, F, C, E
4.
B, D, C, A, E, F
1.
Highly plastic
2.
Cohesionless
3.
Slightly plastic
4.
Moderately cohesive
90
