3D Laser Scanning of Donnells Dam



3D Laser Scanning of Donnells Dam

3D laser Scanning has become an excellent alternative to conventional surveying methods where there is an increased demand to capture topographic details quickly and safely; examples include under construction tunnels, highways, bridges, or railway lines. 3D laser scanning is an excellent tool for surveying tunnels (Hydro/rail/road etc), for applications such as design to as-built comparison of profiles, calculation of undercut & overcut, volume of concreting done post construction, checking of tunnel alignment etc. 3D laser scanning can be used efficiently for scanning proposed roads in hilly terrains which are normally inaccessible and can’t be surveyed with a total station due to high vegetation..





Donnells Dam is a concrete arch dam located on the Middle Fork of the Stanislaus River in Tuolumne County, California. The water impounded by the 291-foot (89 m) high dam forms Donnell Lake. Using traditional surveying techniques is not easy in such kind of topology, where as by Laser Scanning in just 20 scans the entire area is covered. Total no. of estimated no. of points are 162,243,332...






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