1. Unit of Geotechnical Engineering, Universität Innsbruck, Technikerstraße 13, 6020 Innsbruck, Austria
2. Department for Road Administration of the Provincial Administration of Lower Austria, Landhausplatz 1, 3109 Sankt Poelten, Austria
3. Institute of Applied Geology, Department of Civil Engineering and Natural Hazards, University of Natural Resources and Life Sciences, Peter Jordan-Strasse 82, 1190 Vienna, Austria