TTU SURVEYING EXAM 2 QUESTIONS & ANSWERS
This is a general term applied to any of the various processes by which elevations of
points or differences in elevation are determined. - Answer -Leveling
What is a relatively permanent object, natural or artificial, having a marked point whose
elevation above or below a reference datum is known or assumed? Common examples
are metal disks set in concrete parts of fire hydrants, curbs, etc. - Answer -Bench Mark
(BM)
If Bench Mark (BM) 1 Elevation is 820.00, and your backsight is 8.42, and your foresight
on BM2 is 1.2, what is the elevation of BM2? - Answer -827.22
Using a total station (with a known height) to determine your vertical angle and slope
distance to a prism (with a known length) over a fixed point to find the elevation of a
point is called what? - Answer -Trigonometric Leveling
These types of levels are not commonly employed in differential leveling, but are used
extensively for establishing elevations on construction projects. - Answer -Electronic
Laser Levels
A collimation error is a ____________ error. - Answer -Line of Sight (LoS)
If one's tripod leg is loose, that is an example of a(n) ______________ error. - Answer -
Instrumental
If one looks through the auto-level and the level rod appears to be shaking/vibrating,
what is most likely occurring? - Answer -Wind
If the leveling bubble is not centered, that is an example of a(n) ____________ error. -
Answer -Personal
If a measurement was recorded/written incorrectly in a field book, that is an example of
a(n) _____________. - Answer -Mistake
This type of measurement strategy measures lengths by indirectly determining the
number of full and partial waves of transmitted electromagnetic energy required in
traveling between the two ends of a line. - Answer -Electronic Distance Measuring
(EDM)
These devices can simultaneously and automatically observe both distances and
angles. The microprocessor receives the measured slope length and zenith (or altitude)
angle, calculates the horizontal and vertical distance components and displays them in
real time. - Answer -Total Station
The equation...
This is a general term applied to any of the various processes by which elevations of
points or differences in elevation are determined. - Answer -Leveling
What is a relatively permanent object, natural or artificial, having a marked point whose
elevation above or below a reference datum is known or assumed? Common examples
are metal disks set in concrete parts of fire hydrants, curbs, etc. - Answer -Bench Mark
(BM)
If Bench Mark (BM) 1 Elevation is 820.00, and your backsight is 8.42, and your foresight
on BM2 is 1.2, what is the elevation of BM2? - Answer -827.22
Using a total station (with a known height) to determine your vertical angle and slope
distance to a prism (with a known length) over a fixed point to find the elevation of a
point is called what? - Answer -Trigonometric Leveling
These types of levels are not commonly employed in differential leveling, but are used
extensively for establishing elevations on construction projects. - Answer -Electronic
Laser Levels
A collimation error is a ____________ error. - Answer -Line of Sight (LoS)
If one's tripod leg is loose, that is an example of a(n) ______________ error. - Answer -
Instrumental
If one looks through the auto-level and the level rod appears to be shaking/vibrating,
what is most likely occurring? - Answer -Wind
If the leveling bubble is not centered, that is an example of a(n) ____________ error. -
Answer -Personal
If a measurement was recorded/written incorrectly in a field book, that is an example of
a(n) _____________. - Answer -Mistake
This type of measurement strategy measures lengths by indirectly determining the
number of full and partial waves of transmitted electromagnetic energy required in
traveling between the two ends of a line. - Answer -Electronic Distance Measuring
(EDM)
These devices can simultaneously and automatically observe both distances and
angles. The microprocessor receives the measured slope length and zenith (or altitude)
angle, calculates the horizontal and vertical distance components and displays them in
real time. - Answer -Total Station
The equation...
