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AI Flashcards
Surveying Basics
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1
Question
What is irrigation in agriculture?
Answer
Artificial application of water to soil for plant growth moisture
2
Question
What does drainage achieve in soil management?
Answer
Removal of excess water detrimental to plants
3
Question
What is the art of surveying?
Answer
Measuring horizontal/vertical distances, angles, directions, establishing points
4
Question
What distinguishes geodetic surveying?
Answer
Accounts for earth's true shape, high precision over large areas
5
Question
When is plane surveying appropriate?
Answer
When earth's spheroidal shape is neglected for horizontal distances
6
Question
What is the purpose of control survey?
Answer
Establish horizontal and vertical positions of arbitrary points
7
Question
What does boundary survey determine?
Answer
Length, direction of land lines, and their ground positions
8
Question
What data does topographic survey gather?
Answer
For topographic maps showing terrain configuration and objects
9
Question
What is the focus of hydrographic survey?
Answer
Survey of water bodies for navigation, supply, or sub-aqueous construction
10
Question
What operations does mining survey control?
Answer
Locate and map underground/surface mining works
11
Question
What is construction survey used for?
Answer
Lay out, locate, monitor public/private engineering works
12
Question
What surveys comprise route survey?
Answer
Controls, topographic, construction for highways, railroads, etc.
13
Question
How does photogrammetric survey utilize aerial photogrammetry?
Answer
Measurements on photographs determine positions of objects
14
Question
What is measurement in surveying context?
Answer
Determining extent, size, dimensions compared to a standard
15
Question
What does pacing involve in distance measurement?
Answer
Counting steps or paces in a required distance
16
Question
How is distance measured by taping?
Answer
Stretching calibrated tape between points and reading indicated distance
17
Question
What is the basis of tachymetry?
Answer
Optical geometry of instruments, indirect measurement using transit/theodolite
18
Question
What computation occurs in stadia method?
Answer
Distances computed by trigonometry from subtended intervals/angles
19
Question
How does stadia method determine horizontal distances?
Answer
Using telescope with horizontal/stadia hairs and graduated rod
20
Question
What is an odometer used for in surveying?
Answer
Roughly measuring surface distance, attached to a wheel
21
Question
How does a measuring wheel function?
Answer
Portable device with wheel on rod/handle, pushed by operator
22
Question
What does an optical rangefinder do?
Answer
Determines distances approximately by focusing, hand-held or on tripod
23
Question
What is photogrammetry?
Answer
Measurement of images on photographs from aircraft vertically
24
Question
What is leveling in surveying?
Answer
Measuring vertical distances to determine elevations or differences
25
Question
What defines a level surface?
Answer
Curved surface perpendicular to gravity direction at any point
26
Question
What is a level line?
Answer
Curved line in level surface, equidistant from earth's center
27
Question
What is a horizontal surface?
Answer
Plane tangent to level surface at a particular point
28
Question
What is mean sea level?
Answer
Imaginary sea surface midway between high and low tides
29
Question
What is a datum in elevation reference?
Answer
Convenient level surface parallel to mean sea level
30
Question
What does elevation measure?
Answer
Vertical distance above or below mean sea level or datum