11-32.
In profile leveling, rod readings
taken from points that are neither
BMs nor TPs are entered under what
heading in the field notebook?
1. BS
2. FS
3.
IFS
4.
Remarks
11-33.
You have run a line of levels from
an initial BM to a final BM.
You
compute the elevation of the final
BM to be 1,475.77 feet.
The
elevation of the initial BM is
1,502.36 feet.
If the sum of the
backlights is 16.32 feet, what is
the sum of the foresights?
1.
10.27 ft
2.
26.59 ft
3.
32.06 ft
4.
42.91 ft
11-34.
At what point(s) along a proposed
highway are cross sections taken?
1.
Every 25 ft
2.
Every 50 ft
3.
At regular stations only
4.
At regular stations, at any
point where there is a break
on the ground, or at any
interval desired
11-35.
By which of the following methods
is the HI in cross-section
leveling determined when using a
hand level?
1.
By adding the instrumentman
eyesight height to the
center-line elevation from
profile field notes
2.
By adding the instrumentman
eyesight height to a BM
elevation
3.
By adding the BS reading to a
BM elevation
4.
Each of the above
11-36.
You are doing cross-section
leveling for a highway road
survey.
The profile center-line
elevation at station 25 + 00 is
112.5 feet and eye height is 5.3
feet.
On a rod held 20 feet from
the center line you read 11.2
feet.
What is the elevation at
this point?
1.
96.0 ft
2.
106.6 ft
3.
118.4 ft
4.
129.0 ft
11-37.
What is a form of differential
leveling in which a continuous
check is maintained on the
accuracy of the leveling
procedure?
1.
Three-wire
2.
Double rodding
3.
Cross-section
4.
Profile
79
