EN 
DE Photogrammetric preservation of evidence in the course of construction work
Photogrammetric preservation of evidence in the course of construction work DB Netz AG commissioned Mull und Partner Ingenieurgesellschaft mbH Hannover, Osnabrück branch, with the preliminary preservation of evidence for the establishment of a staging area for construction materials in the course of the line extension. The preservation of evidence included chemical/physical soil analyses as well as the overall condition survey of the area. The photogrammetric survey was carried out using aircraft technology (drone). [...]
