| Project executed | 11/2006 - 03/2007 |
|---|---|
| Surveyed length | approx. 1,5 km |
| Surveyed Area | approx. 2 km² 3D |
| Service | laserscanning, generation of a 3D-terrain-model, generation of cross sections |
| Client/Owner | Office of the Vorarlberg government department of road construction |
Flexenpass road L 198 in the Arlberg Region of Vorarlberg opens up the famous skiing resorts Lech and Zürs. 100 years ago the road was built in a most extreme terrain and since then has been constantly expanded to ensure the best possible avalanche safe access to these alpine resorts.
As part of the ongoing expansion, the reconstruction of Hölltobelgallery was planned. To receive a planning guide as accurately as possible it was decided to log the rock faces as well as the existing gallery with multiple laserscans at different vantage points.
Before the project began a survey control network was established in accordance with the client and the coordinates of all control points were determined. The actual measurements were implemented with a longrange scanner (effective range up to 2 km) and a midrange scanner (effective range up to 200 m). The density of points was adapted to the different requirements (terrain/gallery). Therefore a higher point density was chosen for the gallery than for the terrain model. From these point clouds a georeferenced, intermeshed terrain model was created from which a contour map could be derived.
| Project executed | 06/2006 - 07/2006 |
|---|---|
| Surveyed length | approx. 600 km |
| Surveyed Area | approx. 1 200 km² |
| Service | creation of orthographic image and terrain model for finding and selection of the pipeline routing |
| Client/Owner | ILF Beratende Ingenieure AG Bader Straße 816, 8048 Zürich, Switzerland |
The TAP project comprises the construction of a 560 km long 40'' gas pipeline between Bulgaria and Italy, which leads through extremly mountainous terrain. For the about 180 km long albanian section various pipeline routes with a total length of approximately 600 km were analyzed in a short time with respect to feasibility. Eight preselected routes were surveyed during outbound and return flight by means of the dibit Airborne system. The strips of data which had a width of 2-3,5 km were then processed and evaluated.
As a result, the client received the orthographic images and the responding terrain model of selected critical route sections only a few days after the flights. For the final selected route the orthographic images were also delivered in AutoCAD for detalied planning and design.