Topography

Geotea Srl performs topographic surveys in order to graphically and numerically represent the morphological particularities of the terrain and artifacts.

We are able to perform topographic surveys in easily accessible areas and in complex areas of hydrogeological risk (open pit quarries, surface landslides, rock collapses, riverbanks and riverbeds, debris flow, etc…)

In detail we are able to realize:

• celerimetric measurements with Total Station (with and without prism) in order to obtain extremely accurate data even at long distances;
• satellite surveys with GNSS/RTK antenna which, by integrating the functions of satellite and terrestrial localization systems, allow global plano-altimetric positioning (georeferencing) while maintaining a good degree of accuracy. The Rover GPS Antenna allows extremely fast surveying and tracking compared to traditional instrumentation.

• aero-photogrammetric drone surveys. This tool è particularly advantageous when the area to be surveyed is inaccessible and/or dangerous (landslide bodies, riverbeds, quarry areas) and/or when the area to be surveyed is very large. Thanks to the onboard equipment of a’GPS/RTK antenna, surveys can be carried out with centimeter accuracy.

With the drone è it is also possible:

• acquire photographic images from a highly scenic perspective for landscape photo-insertions;
• .
• perform inspections and surveys of inaccessible areas, unsafe infrastructure, structural elements not otherwise reachable;
• acquire images/videos on site for the State of Work Progress or periodic monitoring of areas being worked on (quarry advances)

The graphical restitution of the survey in three dimensions è carried out in the CAD environment with on-demand creation of contour lines, sections, elevations and calculation of 3D volumes.

Through the processing of photogrammetric data 3D models of the survey area can be generated in “obj” format and DTM digital terrain models.

Thematic cartographies in GIS environment are also processed.

Restitution of a plano elevation survey with contour lines

Reconstruction in GIS environment of isoconcentrations

Creating 3D contour lines

Processing State of Fact / Project Sections