3-56.
When, if ever, should a base course
of sandy and gravelly material be
used?
1.
For light loads with
low-bearing values
2.
For limited use
3.
For heavy loads with
high-bearing values
4.
Never
3-57.
A coarse, crushed aggregate is
placed in a relatively thin layer
and rolled into place. This is
the first step in preparing what
type of base?
1.
Stabilized
2.
Coarse graded
3.
Waterbound
4.
Macadam
3-58.
When sand, gravel, and crushed rock
are not available, a base course
can be developed from which of the
following materials?
1.
Cinders
2.
Iron ore
3.
Shells
4.
Each of the above
3-59.
What is the most important
consideration when using caliche?
1.
Moisture content
2.
Gradation
3.
Compactive effort
4.
Drainage
3-60.
What type of equipment is
recommended for the compaction of
tuff?
1.
Grader
2.
Scraper
3.
Sheepsfoot roller
4.
Smooth drum roller
3-61.
What is the maximum lift for a
bituminous base course, in inches?
1.
1.5
2.
2.5
3.
3.5
4.
4.5
3-62.
What thickness of bituminous base
course, in inches, is equal to 6
inches of concrete base course?
1.
6
2.
8
3.
3
4.
4
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