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Land Surveying
Unit: Introduction to Land Surveying
Lesson: Methods of Surveying
Surveying
• Surveying is involved in many activities and requires various degrees of accuracy
• The different types of surveying will be discussed here, but our class activities will only involve a few of these methods
Plane Surveying
• The curvature of the earth is neglected
• Used mostly in small areas and settings
• Most agricultural surveys are done this way
Geodetic Surveying
• The curvature of the earth is considered
• Used mostly in large areas and settings
• Used to locate precise points needed for other surveys
Land or Boundary Surveying
• Establishes property corners and land lines
• Usually a closed survey = a survey that starts and stops at the same point
Topographic Surveying
• Used to prepare topographic maps
• Usually shows natural and artificial features as well as different points of elevations
Route Surveying
• Used for the construction of highways, railroads, pipelines, canals, etc.
• These are projects that do not start and stop at the same point
Hydrographic Surveying
• Used to establish shorelines, boundaries of lakes, streams, and other bodies of water
Construction Surveying
• Used on the “job site”
• Provides locations of structures
• Provides information on various elevations of structures
Photogrammetric Surveying
• Uses land or aerial photographs for making measurements
Lesson Closure
• Define the purpose of land surveying
• Name and discuss different methods of surveying