12-18.
In the plotting of cross sections,
the vertical scale relates to the
horizontal scale in which of the
following manner?
1.
2.
3.
4.
The vertical scale must be
equal to the horizontal scale
The vertical scale must be
exaggerated from the
horizontal scale
The vertical scale may be
equal to the horizontal scale,
or it may be exaggerated for
clarity
The vertical scale is usually
less than the horizontal
scale, but it may be equal or
exaggerated for clarity
IN ANSWERING QUESTIONS 12-19 THROUGH 12-21,
REFER TO FIGURE 14-29 IN YOUR TEXTBOOK.
12-19.
The plotted cross sections are
called irregular for what reason?
1.
Sections are plotted at a full
station and at a section
between two full stations
2.
The vertical and horizontal
scales are different
3.
Intermediate elevations are
plotted at varying distances
from the center line
4.
More elevations were plotted
for the section at station
11 + 00 than for the section
at station 11 + 43
12-20.
Notice that the cross-section notes
show only two ground elevations to
the right of the center line at
station 11 + 43.
Assume that an
additional reading could have been
obtained at a point 10 feet to the
right of the center line but was
not.
Refer to the plotted cross
section of the station and furnish
the entry for this point.
2.6 feet?
1.
2.
3.
1.
10
(80.1)
5.1
2.
10
8.6
(67.0)
3.
10
2.4
(74.3)
12-21.
The HI for station 14 + 00 is
1.
76.70
2.
78.90
3.
81.60
4.
85.22
12-22.
What points are plotted in a
three-level section?
1.
The roadway edges, slope
stakes, and center line
2.
The depth of cut or fill and
the amount of earth to be
moved
3.
The left-hand slope stake,
right-hand slope stake, and
center line
4.
The left-hand roadway edge,
right-hand roadway edge, and
center line
12-23.
During what stage of a road
construction project are “blue
tops” used?
1.
Rough grading
2.
Clearing and grubbing
3.
Final grading
4.
Paving
12-24.
The natural earth surface below the
pavement of a highway is called the
1.
final grade
2.
finish grade
3.
rough grade
4.
subgrade
12-25.
Which of the following markings on
a grade stake indicates a cut of
4.
Each of the above
12-26.
You wish to indicate a cut of 2.6
feet on a stake that is not a
centerline stake.
You should write
the cut information on what part of
the stake?
1.
Front
2.
Back
3.
Right side
4.
Left side
4.
10
9.7
(67.0)
84
