1. Unit: Introduction to Land Surveying Lesson: Methods of Surveying

2. 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

3. Plane Surveying The curvature of the earth is neglected
Used mostly in small areas and settings
Most agricultural surveys are done this way

4. 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

5. Land or Boundary Surveying
Establishes property corners and land lines
Usually a closed survey = a survey that starts and stops at the same point

6. Topographic Surveying
Used to prepare topographic maps
Usually shows natural and artificial features as well as different points of elevations

7. 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

8. Hydrographic Surveying
Used to establish shorelines, boundaries of lakes, streams, and other bodies of water

9. Construction Surveying
Used on the “job site”
Provides locations of structures
Provides information on various elevations of structures

10. Photogrammetric Surveying
Uses land or aerial photographs for making measurements

11. Lesson Closure Define the purpose of land surveying
Name and discuss different methods of surveying