Surveying is an essential task for economical and quality excavation of underground cavities. Apart from the actual heading control necessary to maintain the required construction tolerances and an optimal excavation profile, numerous setting out tasks also form part of the job. This includes, for instance, setting out of portals and pipe umbrellas and of niches, cross-cuts and inner shells.

Surveying  in the side wall gallery of the Lainzer tunnel in Vienna

But the construction of vertical shafts, inclined shafts and spirals also requires extensive geodetic know-how. For these complex fields of activity, GEODATA has the required equipment, experienced staff and proven software solutions.