Topography literally relates to the shape and features of land surfaces, so a topographical survey is an accurate depiction of the ground surface and its features such as
- Concrete areas
- Significant trees
- Areas of vegetation
- Utility services, etc.
To depict the ground surface, spot heights are surveyed over the property that are rendered into a tin model (series of triangles) from which contours are derived.
Importance of a Topographical Survey
Your Architect and Engineer will most likely require a topographical survey to facilitate their designs and Planners use them to determine compliance with Council’s development standards.
A PDF plan is typically produced and the 3D electronic data is used to calculate earthwork volumes and design structures, dwellings, driveways, drainage, etc.