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Published byAgnes Hines Modified over 9 years ago
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B ASIC S URVEYING K NOWLEDGE FOR H IGH D EFINITION S CANNING Steven Rames, PE/LS September 12, 2013
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B ACKGROUND K NOWLEDGE TO HDS Youtube Video
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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.
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Misc. Equipment
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Equipment - Levels
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Equipment – Transit/Total Station
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Equipment - Modern
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Examples
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Datum(s) Horizontal/Vertical – Assumed – Local – Building Based – Geodetic – ECEF – National
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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
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Control System of horizontal and vertical positions with know accuracy
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HDS Uses Forensics Architecture Engineering Historical Preservation Science/Exploration Construction Surveying Utilities Management
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Static Mobil Airborn Hydrographic Ground Penetrating Methods of HDS
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Surevey Exercises Horizontal Measurement – Chaining Plumbing Sag Thermal – Cloth Tape – Pacing Leveling – Notes Angles
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Leveling
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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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