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CMGT-2950 Hollar, Test 1 Verified Test With 100% Rate
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CMGT-2950 Hollar, Test 1 Verified Test With100% Rate
What is surveying Correct Answer: the art and science of taking field measurements on or near the
surface of the earth
Survey field measurements include... Correct Answer: horizontal and slope distances, vertical
distances, and horizontal and vertical angles
What is geomatics Correct Answer: describes the computerization and digitization of data collection,
data processing, data analysis, and data output.
Includes traditional surveying but also reflects the scope of measurement science and information
technology
Plane surveys Correct Answer: is that type of surveying in which the surface of the earth is
considered to be a plane for all X and Y dimensions.
Datum Correct Answer: z dimension (height), usually meaning sea level
Geodetic surveys Correct Answer: that type of survey in which the earth is considered to be
ellipsoidal in shape for all X and Y dimensions.
X & Y plane dimensions Correct Answer: x=easterly
Y=northerly
Engineering surveying Correct Answer: those activities involved in the planning and execution of
surveys for the location, design, construction, maintenance, and operation of civil and other
engineered projects
Preparation of surveying and related mapping specifications.
Execution of remote sensing and field surveys for the collection of required data - including
topographic and hydrographic data.
Preliminary surveys Correct Answer: made to collect data, which can then be plotted to scale on a
plan or map
-locate natural features such as trees, rivers, hills, etc.
Construction surveys Correct Answer: the layouts of proposed construction features
What do preliminary and construction surveys must have in common? Correct Answer:
measurements for both surveys must be referenced to a common base for X,Y,and Z dimensions
Control survey Correct Answer: the establishment of a base for horizontal and vertical measurements
-establish reference points for preliminary and construction surveys
, Benchmarks (BM) Correct Answer: permanent point of known elevation
-established using precise leveling surveys
Polar tie-ins Correct Answer: angle/distance technique
-now the most widely used location technique
Positioning tie-in Correct Answer: the second most widely used technique for locating topographic
features.
-utilizes direct positioning techniques common to total station surveys and ground-scanning
techniques, satellite-positioning techniques, and remote-sensing techniques
Theodolites (transits) Correct Answer: used for measuring horizontal and vertical angles and for
establishing linear and curved alignments in the field
Total station Correct Answer: combines electronic distance measurement with an electronic
theodolite
-in addition to electronic distance and angle measuring capabilities, the instrument is equipped with a
central processor that enables horizontal and vertical positions
Level and rod Correct Answer: used to determine distances in elevation and elevations in a wide
variety of surveying, mapping, and engineering applications
Steel tapes Correct Answer: relatively precise measuring instruments and are used mostly for short
measurements in both preliminary and layout surveys
Line and grade Correct Answer: the horizontal location and the height above sea level.
Line-the horizontal location
Grade- the vertical location or elevation
Horizontal distances Correct Answer: can be measured with a fiberglass or steel tape or with an
electronic distance measuring device.
When surveying, the horizontal distance is always required for plan plotting purposes
Vertical distances Correct Answer: can be measured with a tape, however, mostly are measured with
a surveyor's level and rod or with a total station
Slope distances Correct Answer: can be measured with a fiberglass or steel tape or with an electronic
distance measuring device.
A distance measured with steel tape on a slope can be trigonometrically converted to its horizontal
equivalent by using either the slope angle or the difference in elevation between the 2 points
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