A Topographic survey ('topo") is a site map showing the
topographic features of a site. Topographic features include drainage patterns,
locations of rock outcropings, hills and other natural features. The map may
also include artificial features such as buildings, utility locations, detention
ponds and other features which would effect engineering design on the site.
While not all topographic surveys require contours, topographic contours can
be shown at almost any interval that is specified by the client. In areas
of steep terrain, a larger contour interval can show the topography without
the crowding of contour lines that would be introduced by a smaller contour
interval. In areas of relatively flat terrain, a smaller contour interval
is necessary to show the small changes in topography in a meaningful way.
The topographic survey is prepared by gathering horizontal and vertical information.
For smaller sites, the information is be gathered by our lieca laser scanner.
After the raw data has been gathered, it may be used to create a 3d point
cloud which data can then be extracted from A topographic survey is often
requested by engineers, architects or building contractors who need to know
information about overall site grade and elevations. This information may
be used to determine placement of site improvements, estimate the volume of
dirt to be moved, or for many other construction and development purposes.
Topography and Topographic Survey UK
M6 Junction 28 laser
scan
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