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The phrase “Topography” comes from Latin & refers to the consideration of the pattern and characteristics of the world’s surface. As such it likewise pertains to the description of those figures and characteristics - particularly via the utilisation of maps.

The intention of Topography is so that the position of any point can be defined in terms of longitude, altitude & latitude. Being in condition to do this is primary when planning, engineering and constructing and broadly speaking anything to do with civil engineering.

Therefore, it’s fundamental that before any structure project is started that a topographic survey is carried through ready and waiting to offer principal members of the project, such as authorities, architects and developers with the data they require to take all-important decisions.

Virtually all topographic surveys will offer this data in the shape of a highly accurate 2D or 3D land drawing.

There are numerous ways a Topographic Survey can be implemented:

Direct Survey/Surveying: will accurately determine the placement of points and the lengths and angles between them by utilising tools such as dumpy levels, clinometers & theodolites.

Remote Sensing: The data is gathered from a distance.

Aerial: satellite pictures are utilized.

Photogrammetry: measurement of points is learned by 2 or more photos shot from unique positions.

Radar / Sonar: Specially used when mapping the sea floor.

This entry was posted on Monday, December 14th, 2009 at 11:18 am and is filed under Mathematics Hall, The Tech Life. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.