A S S I G N M E N T 3
Textbook Assignment: "Soils: Surveying and Exploration/Classification/Field
Identification." Pages 16-4 through 16-23.
3-1.
3-2.
3-3.
3-4.
3-5.
Learning Objective: Identify the
purpose of soil exploration.
Identify reference sources and
their uses in planning soil
exploration.
Soil surveys of a proposed
construction site provide which of
the following information about the
soil conditions of that site?
1.
The condition of the soil
layers
2.
The drainage characteristics
3.
The source of possible
construction materials
4.
All of the above
Which of the following types of
soil has better internal drainage?
1.
Well-graded gravel
2.
Inorganic clay
3.
Silty sand
4.
Organic clay
When you discover that a proposed
grade line is below the groundwater
table, which of the following
actions must be taken?
1.
Change the location
2.
Lower the grade line
3.
Lower the water table by
mechanical means
4.
Install a water barrier during
the construction
At what time interval should the
measurement for the groundwater
table be taken in a test hole?
1.
As soon as water is located
2.
At high tide
3.
24 hours after the hole is
bored
4.
36 hours after the highest
water level is reached
A soil profile provides which of
the following information?
1. Location of ledge rock
2. Location of the water table
3. Identification of the soil
layers
4. All of the above
3-6.
3-7.
3-8.
3-9.
3-10.
3-11.
The soil profile does NOT provide
information that is useful in
determining the finished grade
location.
1.
True
2.
False
Which of the following sources of
information would provide you with
a location of construction
materials, as well as locations of
sand and gravel pits?
1.
Intelligence reports
2.
Topographic maps
3.
Agricultural maps
4.
Geologic maps
An agricultural soils map provides
a variety of information on soils
to what maximum depth?
1.
72 inches
2.
36 inches
3.
12 inches
4.
6 inches
When reviewing aerial photographs,
you observe areas with smoothly
rounded slopes. What type of soil
does this indicate?
1.
Granular
2.
Plastic
3.
Bedrock
4.
Silt deposits
When reviewing aerial photographs,
you notice a drainage area. What
is indicated by a sudden change in
grade or direction of that drainage
area in the photograph?
1.
Diversion ditches
2.
Rock formations
3.
Sand deposits
4.
All of the above
With proper study of maps and
photographs, there should be no
need for any field investigation.
1.
True
2.
False
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