Prüfingenieur für Baustatik (Certified Checking Engineer), Germany.
Registered Professional Engineer (P.E.), California, USA.
Committee and Academy Work
Member of the ASCE SEI Disproportionate Collapse Standards and Guidance Committee; chairman of the Terminology and Procedures Sub-Committee
Member of the Post-Tensioning Institute (PTI ) Committee on Cable-Stayed Bridges.
International Association for Bridge and Structural Engineering (IABSE).
International Association for Bridge Maintenance and Safety (IABMAS).
American Society of Civil Engineers (ASCE).