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CVEN 303 Exam 1 Questions & Answers Already Graded A+, Exams of Advanced Education

Widener University - DelawareAdvanced Education

GPS - CORRECT ANSWER--stands for Global Positioning System -Base station and rover -hand-held Geomatics - CORRECT ANSWER-encompasses modern technologies that deal with gathering and managing spatial data: -traditional surveying -Geographic Information System (GIS) -Global Positioning System (GPS) -Remote sensing

Typology: Exams

2024/2025

Available from 06/29/2025

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CVEN 303 Exam 1
GPS - CORRECT ANSWER--stands for Global Positioning System
-Base station and rover
-hand-held
Geomatics - CORRECT ANSWER-encompasses modern technologies that deal with
gathering and managing spatial data:
-traditional surveying
-Geographic Information System (GIS)
-Global Positioning System (GPS)
-Remote sensing
Types of surveys: - CORRECT ANSWER--Plane
-Geodetic
Plane Surveying - CORRECT ANSWER-Earth's surface is treated as a flat plane with X
and Y coordinates.
-used for small scale surveys in small areas (1 mile or less)
Geodetic Surveying - CORRECT ANSWER-Earth's surface is considered an ellipsoid
-used for accurate, large-scale surveys (state and national boundaries, control
networks)
Surveying for civil engineers deals with the measurement of: - CORRECT ANSWER-1)
Angles (horizontal, vertical)
2) Distances (horizontal, vertical, slope)
3) Positions (2D, elevation)
Angles and distances tell us about the _____ of the object but not the _____. -
CORRECT ANSWER-shape, position on earth's surface
Instruments for measuring distances: - CORRECT ANSWER--Total Station
-Laser Distance Measurement meter
-Tape
-Odometer (measuring wheel)
Instruments for measuring elevation: - CORRECT ANSWER--Automatic level
-laser level
-Total station
-GPS
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Download CVEN 303 Exam 1 Questions & Answers Already Graded A+ and more Exams Advanced Education in PDF only on Docsity!

CVEN 303 Exam 1

GPS - CORRECT ANSWER--stands for Global Positioning System

  • Base station and rover
  • hand-held Geomatics - CORRECT ANSWER-encompasses modern technologies that deal with gathering and managing spatial data:
    • traditional surveying
    • Geographic Information System (GIS)
    • Global Positioning System (GPS)
    • Remote sensing Types of surveys: - CORRECT ANSWER--Plane
  • Geodetic Plane Surveying - CORRECT ANSWER-Earth's surface is treated as a flat plane with X and Y coordinates.
  • used for small scale surveys in small areas (1 mile or less) Geodetic Surveying - CORRECT ANSWER-Earth's surface is considered an ellipsoid
  • used for accurate, large-scale surveys (state and national boundaries, control networks) Surveying for civil engineers deals with the measurement of: - CORRECT ANSWER-1) Angles (horizontal, vertical)
  1. Distances (horizontal, vertical, slope)
  2. Positions (2D, elevation) Angles and distances tell us about the _____ of the object but not the _____. - CORRECT ANSWER-shape, position on earth's surface Instruments for measuring distances: - CORRECT ANSWER--Total Station
  • Laser Distance Measurement meter
  • Tape
  • Odometer (measuring wheel) Instruments for measuring elevation: - CORRECT ANSWER--Automatic level
  • laser level
  • Total station
  • GPS

Ellipsoid Earth Models - CORRECT ANSWER--Geodetic Reference System of 1980 (GRS80)

  • World Geodetic System of 1984 (WGS84)
  • Geoid: ideal Mean Sea Level (MSL) T or F: In the continental United States, the geoid is below the elipsoid - CORRECT ANSWER-True Location referencing systems (horizontal) - CORRECT ANSWER--latitude and longitude
  • plane (x & y coordinate)
  • map projections Location referencing systems (vertical) - CORRECT ANSWER--ellipsoid (GRS80/WGS84)
  • Geoid (MSL) Latitude - CORRECT ANSWER--projected from center of earth
  • max = 90 degrees N or S Longitude - CORRECT ANSWER--projected from equitorial line
  • max = 180 degrees east or west Latitude and longitude are _____ not ______. - CORRECT ANSWER-angles, distances Can latitude and longitude be used to determine distances directly? - CORRECT ANSWER-No they cannot. This would require some relationship with the radius of the earth, which is complex because the earth's radius is not constant. ______ occurs when we use a flat plane to describe the curved surface of earth. - CORRECT ANSWER-distortion State plane coordinate systems - CORRECT ANSWER--Transverse mercator (states with larger N/S dimensions
  • Lambert conformal conic (states with larger E/W dimensions Universal Transverse Mercator (UTM) - CORRECT ANSWER--divides world into 60 zones that run N-->S
  • coordinates measured E and N in METERS
  • eah zone = 6 degrees wide of longitude State plane coordinate systems tied into National datum - CORRECT ANSWER--North American Datum of 1927 (NAD27)
  • North American Datum of 1983 (NAD83)

clockwise survey - CORRECT ANSWER-Az = Back Az of previous side - interior angle counter-clockwise survey - CORRECT ANSWER-Az = Back Az of previous side + interior angle Error in closed traverse - CORRECT ANSWER-error = (sum of interior angles) - (n- 2)* tolerence of closed traverse - CORRECT ANSWER-tolerence = (instrument accuracy)*(sqrt (n)) if error ≤ tolerence - CORRECT ANSWER-correction = +/- (error / n)

  • uniform correction if error > tolerence - CORRECT ANSWER-redo survey Latitude - CORRECT ANSWER-D cos α Departure - CORRECT ANSWER-D sin α error in latitude (EL) - CORRECT ANSWER-∑latitudes error in departure (ED) - CORRECT ANSWER-∑departures latitude correction - CORRECT ANSWER--EL(lengthi/perimeter) latitude correction - CORRECT ANSWER--ED(lengthi/perimeter) true north (astronomic north) - CORRECT ANSWER-through the geographic poles which earth rotates about. This is fixed, it does not change with time. magnetic north - CORRECT ANSWER-the point on earth's surface where the geomagnetic field is perpendicular to the ellipsoid grid north - CORRECT ANSWER-a true north is established for one point in a particular zone. All other points in that zone use the same line of direction as north. arbitrary (assumed) meridian - CORRECT ANSWER-a direction adopted for a particular project for convinience magnetic deviation - CORRECT ANSWER-varies with location and time. The angle (α) between magnetic north and true north
  • positive when E of true north
  • negative when W of true north rate of change of magnetic deviation - CORRECT ANSWER-mag dev = current mag dev - /+ (year - current year)*rate equation for true north - CORRECT ANSWER-TN = MB +/-MD direct differential leveling - CORRECT ANSWER-line of sight is horizontal so difference in elevation is computed directly
  • advantage = more accurate
  • disadvantage = time consuming trigonomic leveling - CORRECT ANSWER-line of sight is not horizontal so the difference in elevation is computed from vertical angle and slope distance
  • advantage = less time consuming
  • disadvantage = less accurate curvature error (c) - CORRECT ANSWER-divergence between a level line and horizontal line refraction error (r) - CORRECT ANSWER-all sight lines are refracted downward by earth's atmosphere r+c (m), K (km) - CORRECT ANSWER-r+c = 0.0675K² r+c (ft), K(miles) - CORRECT ANSWER-r+c = 0.574K² r+c (ft), K(thousands of ft) - CORRECT ANSWER-r+c = 0.0206M² Procedure for calculating elevation - CORRECT ANSWER-1) HI1 = BM1 + BS
  1. elev. TP1 = HI1 - FS