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