The members of the SDA-engineering GmbH are engaged in different committees and associations. The activities expand the expertise of our company and result in close contacts to approving authorities, international research institutions and representatives of code committees. 

Furthermore, we are collaborating closely with the Chair of Structural Statics and Dynamics of RWTH Aachen University, where Prof. Dr.-Ing. C. Butenweg was working as Chief Engineer for 15 years, scince he changed to the Faculty of Energy Systems at FH Aachen - University of Applied Sciences. The close coopperation with RWTH Aachen University will be continued within the Center of Wind and Earthquake Engineering (CWE) and teaching assignments.

Societies and Associations

Activities in commitees and associations

Prof. Dr.-Ing. Christoph Butenweg

• Member of the code committee construction engineering NA 005-51-06 AA, Technical committee earthquake, special problems (Preparation of the earthquake codes DIN 4149 and Eurocode 8 with National Annex for Germany)
• Chairman of the code committee construction engineering NA 005-06-37 AA, Technical committee "Earthquake safety of masonry structures"
• Member and former President of the German Society for Earthquake Engineering and Structural Dynamics (registered association)
• National contact person of the International Atomic Energy Agency (IAEA)
• Member of the Executive Committee of the European Association for Earthquake Engineering (EAEE)
• Board Member of the Center of Wind and Earthquake Engineering (CWE) at RWTH Aachen University
• Member of the Research Advisory Board of German Committee for Masonry Construction e. V. (DAfM)
• Head of the project team SC8.T5 „Evolution of EN 1998-4 and EN 1998-6“
• Member and qualified structural engineer of the Chamber of Engineers Bau NRW

• Visiting professor at the University of Belgrade-Faculty of Civil Engineering

Dr.-Ing. Philippe Renault

• Board Member of the German Society for Earthquake Engineering and Structural Dynamics (DGEB) registered association
• Member of the Swiss Society for Earthquake Engineering and Structural Dynamics (SGEB)
• Member of the French Society for Earthquake Engineering (AFPS)
• Member of the European Association for Earthquake Engineering (EAEE)
• Member of the Association of German Engineers (VDI)
• Member of the visiting committee of the IRSN (France) and president of the panel of experts for natural hazards
• Member of various IAEA working groups and author of codes and TecDocs as well as expert at „Integrated Regulatory Review Services: Site and External Event Design (SEED)“ missions
• Member of the OECD-NEA working group on Integrity and Ageing of Components and Structures (WGIAGE) – seismic, concrete and steel  

Dr.-Ing. Britta Holtschoppen

• International Welding Engineer (IIW) and member of the German Welding Society (DVS)
• Member and qualified structural engineer of the Chamber of Engineers Bau NRW
• Authorized inspector for stability according to § 2 NBVO Hessen
• Member of the European working group „Seismic assessment, design and resilience of industrial facilities”
• Member of the German Society for Earthquake Engineering and Structural Dynamics (registered association)