Geodesy for Surveyors
Understanding the shape of the Earth, reference systems, datums, projections, and coordinate systems used in land surveying.
6 articles
Geodetic Datums
Understanding NAD 27, NAD 83, WGS 84, and datum transformations for land surveying.
Reference Ellipsoids & the Geoid
Understanding reference ellipsoids, the geoid, and the relationship between mathematical and physical models of Earth's shape.
Map Projections
Understanding Lambert Conformal Conic, Transverse Mercator, UTM, and State Plane coordinate systems.
Coordinate Systems
Geographic, grid, geocentric, and local coordinate systems used in surveying.
Vertical Datums
Understanding NGVD 29, NAVD 88, geoid models, and the relationship between ellipsoidal and orthometric heights.
Scale Factors
Understanding grid scale factor, elevation factor, and combined factor for converting between ground and grid distances.