Team

The complete competence at your side

left to right: Arnold Steidl, Albert F. Steindorfer, Stephan Semprich, Kurt Klima, Wulf Schubert
left to right: Alfred Fasching, Christian Lackner, Udo Tschermanegg, Andreas Goricki


3G specifically acknowledges the principle of involvement of its shareholders. Our highly qualified experts leading the company are directly involved in the daily project processing. This ensures that our clients can count on all our experience and the greatest expertise in the planning, construction, research and development of every project.

Em. Prof. Dr. PE. Wulf Schubert

Civil Engineer | Partner | wulf.schubert@3g.at
Em. o.Univ.-Prof. Dipl.-Ing. Dr. Wulf Schubert
Nationality
AT
Education

Graz University of Technology, Austria

Faculty of Civil Engineering | Doctoral thesis at the Institute for Underground Engineering

Serves 3G since
1999

Dr. PE. Peter Johann Sellner

Civil Engineer | Project Collaborator | peter.sellner@3g.at
Nationality
AT
Education

Graz University of Technology, Austria

Faculty of Civil Engineering | Doctoral Thesis at the Institute for Rock Mechanics and Tunnelling

Serves 3G since
2001

Sabine Sellner

Engineering Geologist | Project Collaborator | sabine.sellner@3g.at
Nationality
AT
Education

Karl-Franzens-University Graz, Austria

Studies in Geology

Serves 3G since
2005

Em. Prof. Dr. PE. Stephan Semprich

Civil Engineer | Partner | stephan.semprich@3g.at
Em. o.Univ.-Prof. Dipl.-Ing. Dr. Stephan Semprich
Nationality
AT, DE
Education

Technical University of Hanover, Germany | Technical Universities of Karlsruhe and Aachen, Germany

Faculties of Civil Engineering

Serves 3G since
1999

Ludwig Sickl

Engineering Geologist | Project Collaborator | ludwig.sickl@3g.at
Nationality
AT
Education

Karl-Franzens-University Graz and University of Technology Graz, Austria

Earth Sciences and Geology Studies, Master

Serves 3G since
2011

Dr. PE. Arnold Steidl

Professional Engineer | Managing Director, Engineering Geologist, Partner | arnold.steidl@3g.at
Mag. Dr. Arnold Steidl
Nationality
AT
Education

Karl-Franzens-University Graz and Graz University of Technology, Austria

Studies in Geology, Mineralogy - Petrography, Rock Mechanics, Geotechnics - specialising in Engineering Geology | Doctoral Thesis at the Institute of Engineering Geology and Applied Mineralogy

Serves 3G since
1999

Robert Theni

Foreman | Project Collaborator | robert.theni@3g.at
Nationality
AT
Education

Workers apprentice

Serves 3G since
2018

Dr. PE. Albert Fabian Steindorfer

Civil Engineer | Managing Director, Project Leader, Partner | albert.steindorfer@3g.at
Dipl.-Ing. Dr. Albert Fabian Steindorfer
Nationality
AT
Education

Graz University of Technology, Austria

Faculty of Civil Engineering | Doctoral Thesis at the Institute for Rock Mechanics and Tunnelling

Serves 3G since
2000

Siegfried Trabi

Foreman | Project Collaborator | siegfried.trabi@3g.at
Nationality
AT
Education

Maschinist

Serves 3G since
2020

Robert Staudacher

Technician | Project Collaborator | robert.staudacher@3g.at
Nationality
AT
Education

Graz University of Technology, Austria

Studies in Structural Engineering and Studies in Geotechnical and Hydraulic Engineering

Serves 3G since
2017
Total: 73

3G GRUPPE GEOTECHNIK GRAZ ZT GMBH | Triester Straße 478a | 8055 Graz – Seiersberg-Pirka | Austria | T: +43/316/337799 | office[a]3g.at |

Branch office Vorarlberg | Hintere Achmühlerstraße 1a | 6850 Dornbirn | Austria | T: +43/5572/200649 | vorarlberg[a]3g.at |

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