1977 – 1986 studied at the Technical University in Braunschweig together

1984 – 1987 worked for Prof. Schürmann, Cologne, for the new-build Parliament Debating Chamber in Bonn

1988 founding of an office together, Cologne

1991 founding of BRT Architects, Hamburg

2001 founding of BRT Engineering GmbH, Hamburg, for general planning at home and abroad

from 2002 office relocated to the office building at Deichtor, Hamburg

2003 founding of Hadi Teherani AG for product design