Field Notes and Bearing Calculations
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Questions and Answers

What is one characteristic of field notes that reflects integrity?

  • Written in blue ink only
  • Made from memory
  • Always typed on a computer
  • Recorded in the field and original (correct)
  • What is the corrected bearing if your FS is 192 degrees and your BS is 10 degrees?

  • 202 degrees
  • 191 degrees (correct)
  • 180 degrees
  • 195 degrees
  • Which type of error is caused by a mis-adjusted declination?

  • Random error
  • Systematic error (correct)
  • Measurement error
  • Calibration error
  • What is the larger scale map?

    <p>1:5,000</p> Signup and view all the answers

    What must be done each year to account for the movement of magnetic north?

    <p>Reset your declination</p> Signup and view all the answers

    How far do you need to go in the field to get from point A to point B if it measures 5.0 cm on a 1:1500 map?

    <p>75.0 m</p> Signup and view all the answers

    What is the elevation at the Point of Change (POC) if your total distance is 33 m at -19% towards the falling corner which is at 127 m?

    <p>133.2 m</p> Signup and view all the answers

    What defines the parallel lines on your compass bezel?

    <p>Orienting Lines</p> Signup and view all the answers

    Study Notes

    Field Notes Integrity

    • Field notes must be recorded in the field
    • They must be original, not copied
    • No erasures are permitted

    Corrected Bearing Calculation

    • If a forward sight (FS) is 192 degrees and the back sight (BS) is 10 degrees, the corrected bearing is 191 degrees.
    • Calculation: 192 + (10+180)/2 = 191

    Good Tie Points

    • Examples include road junctions
    • Feature captured with GPS (GPS'd FC)
    • Identifiable features from photos

    Map Scale Comparison

    • A 1:5,000 scale map is larger than a 1:500,000 scale map.

    Errors from Mis-adjusted Declination

    • Systematic error

    Resetting Declination

    • Magnetic North moves, requiring annual declination adjustments.

    Calculating Field Distance from Map

    • If the map distance between points A and B is 5.0cm on a 1:1500 map, the field distance is 75.0m.
    • Calculation: 5.0cm * 1500 = 7500mm = 75.0m

    Azimuth Conversion

    • An azimuth of N 25° W is equivalent to 335 degrees.
    • Calculation: 360 - 25 = 335

    Compass Bezel Lines

    • Orienting lines

    Contour Characteristics

    • Contours never cross or split.
    • Contours also never end.

    Forest Cover Notation

    • For a stand with Douglas-fir dominance and less than 20% western red-cedar, the notation is F(C).

    Point of Control (POC) Elevation Calculation

    • If a POC has a slope distance (SD) of 33m at -19% to a falling corner with an elevation of 127m, the elevation at the POC is 133.2m.

    Elevation Error Calculation

    • If the slope distance (SD) is 43.8m at 15% from an elevation of the end of traverse (EOT) to a benchmark with an elevation of 365m, and the carried elevation is 354.3m, the elevation error is 4.2m.

    Safety Meeting Discussion Points

    • Hazards
    • First aid procedures
    • Emergency response protocols
    • Check-in procedures

    Bird's Eye View Equivalent

    • Plan view

    Definition of Surveying

    • Surveying is the art, science, and technology for establishing and measuring lines, distances, angles, and elevations on or beneath the Earth's surface.

    Isogonic Line Representation

    • Isogonic lines show magnetic field patterns around the Earth.

    Principles of Good Field Notes

    • Legibility
    • Integrity
    • Accuracy
    • Arrangement
    • Clarity

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    Description

    This quiz covers important principles related to field notes integrity, corrected bearing calculations, and the significance of tie points. Additionally, you'll learn about map scales, declination adjustments, and azimuth conversions. Test your knowledge on these essential surveying concepts!

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