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FS Lec 1

TermDefinition
What three primary measurements are used in surveying to determine the dimensions and contour of the Earth's surface? (d,d,e) Distance, direction, and elevation.
The discipline of _____ integrates surveying, mapping, remote sensing, and geographic information systems (GIS). Geomatics
Geomatics is defined as an integrated approach to the measurement, analysis, management, storage, and presentation of _____. Spatial data
The Greek words from which 'geometry' is derived mean _____. Earth measurements
In ancient Egypt, what was the term for the 'rope stretchers' who reestablished property landmarks after Nile floods? Harpedonapata
Which civilization utilized rectangular coordinates to lay out cities, military camps, and aqueducts throughout their empire? The Romans
What was the purpose of the Roman 'chorobate'? It was used as a leveling instrument.
The Roman 'groma' was an instrument specifically used for _____. Aligning straight lines and right angles.
Under what condition is a survey classified as a 'plane survey'? When the Earth is considered a flat surface with parallel North and South lines.
Plane surveys are generally limited to small areas covering a few _____. Square miles
How does a geodetic survey differ from a plane survey regarding the shape of the Earth? A geodetic survey adjusts for the curvature of the Earth.
The network of benchmarks in the United States is established by the _____. (NGS) National Geodetic Survey
What is the primary objective of a Land Survey? To locate property lines, subdivide land, and determine land areas.
Concept: Topographical Survey A survey used to measure the relief, roughness, or 3D variation of the Earth's surface.
Route surveys are used to locate natural and artificial objects along a proposed path for projects like _____. Highways, railroads, pipelines, or power lines.
Which type of survey provides required elevation points and locates structures during the build phase of a project? Construction Survey
Photogrammetric surveys use aerial photographs and are typically used for areas larger than _____ acres. 20
A survey made after a project is complete to record final dimensions and features is known as an _____. As-Built Survey
What is the function of a Control Survey? To establish horizontal and vertical positions that serve as references for other work.
Vertical control surveys establish permanent points of known elevation called _____. Benchmarks
In surveying, why are measurements considered 'estimates' rather than 'exact values'? The true value of a measurement is never known due to inherent imperfections.
Give an example of an exact sum that can be known in surveying geometry. The sum of the angles in a triangle is exactly 180 degrees.
Term: Precision The consistency or repeatability of a set of measurements.
Term: Accuracy The degree of closeness between a measured value and the true value.
In surveying, how is the degree of precision expressed numerically? As a fraction representing the ratio of the error to the measured distance.
In surveying terminology, what is a 'mistake' or 'blunder'? A difference from the true value caused by inattention or carelessness.
What distinguishes an 'error' from a 'mistake' in terms of elimination? Mistakes can be eliminated through checks, while errors can only be minimized.
What are the three general sources of error in surveying? (PIN) Personal, Instrumental, and Natural.
Concept: Systematic Error an error that occurs in a regular and predictable pattern, often due to imperfections in instruments, incorrect settings, etc. such as an incorrectly marked tape.
In ancient Egypt, triangular frames were used with _____ to level construction sites. Plumb bobs
Land surveys are also commonly referred to as _____ or boundary surveys. Property
Is it possible for a measurement to be precise but not accurate? Yes, if the measurements are consistent with each other but far from the true value.
Created by: Phillies55
 

 



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