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Basic Surveying Knowledge for High Definition Scanning

Basic Surveying Knowledge for High Definition Scanning . Steven Rames, PE/LS September 12, 2013. Youtube Video. Background Knowledge to HDS. Equipment. Levels (Dumpy, Auto, Digital ) Transit Theodolite EDM – Electronic Distance Measurement Total Station

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Basic Surveying Knowledge for High Definition Scanning

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  1. Basic Surveying Knowledge for High Definition Scanning Steven Rames, PE/LS September 12, 2013

  2. Youtube Video Background Knowledge to HDS

  3. Equipment • Levels (Dumpy, Auto, Digital) • Transit • Theodolite • EDM – Electronic Distance Measurement • Total Station • GPS – Global Positioning System • LiDAR – Light Detection and Ranging • HDS - High Definition Scanning • Photogrammetry.

  4. Misc. Equipment

  5. Equipment - Levels

  6. Equipment – Transit/Total Station

  7. Equipment - Modern

  8. Examples

  9. Datum(s) • Horizontal/Vertical • Assumed • Local • Building Based • Geodetic • ECEF • National

  10. Datums - Examples • Horizontal • Latitude, Longitude • NAD 27 • NAD 83 • 0,0 • 1000.00,10,000.00 • State Plane Coordinates • UTM • NTRS • Vertical • Sea Level • NAVD29 • NGVD88 • GRAVD • Geoid • Ellipsoid • Ground/Floor • 100.00

  11. Control • System of horizontal and vertical positions with know accuracy

  12. HDS Uses • Forensics • Architecture • Engineering • Historical Preservation • Science/Exploration • Construction • Surveying • Utilities Management

  13. Methods of HDS • Static • Mobil • Airborn • Hydrographic • Ground Penetrating

  14. Surevey Exercises • Horizontal Measurement • Chaining • Plumbing • Sag • Thermal • Cloth Tape • Pacing • Leveling • Notes • Angles

  15. Leveling

  16. Questions • Sag – 30 Lbs Pull offset the sag in a 100.00’ chain • Thermal Change C=0.00000645(T-68)100

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