What Is a Topographic Survey?
The word “Topography” comes from ancient Greek & means the analysis of the pattern and characteristics of the planet’s surface. Following on from this it likewise relates to the description of these shapes and characteristics – specially via the utilization of maps.
The intention of Topography is so that the place of any point can be resolved in terms of longitude, altitude and latitude. Being able to do this is primary when constructing, planning & engineering and more often than not anything in the field of civil engineering.
Therefore, it’s crucial that before any building project is begun that a topographic survey is followed out ready and waiting to provide main members of the project, such as authorities, architects & developers with the info they need to make all-important decisions.
Most topographic surveys will supply this data in the work of a extremely exact 2D or 3D land drawing.
There are many ways a Topographic Survey can be carried through:
Direct Survey/Surveying: will accurately set the location of points and the lengths and angles between them by utilising instruments such as dumpy levels, clinometers & theodolites.
Remote Sensing: The data is collected from a distance.
Aerial: satellite images are utilized.
Photogrammetry: measurement of points is learned by 2 or more photographs caught from distinct positions.
Radar / Sonar: Particularly utilized when mapping the ocean floor.
