1963-1972 restoration measures on historical buildings such as the cathedral and St. Leonhard in Frankfurt / Main
1975-1980 Researcher in the Department of Monument Preservation of the City of Frankfurt / Main (including more than 250 timbered buildings; one of the oldest known timbered houses from 1291/92)
1981-2000 head of the German Center for Crafts and Monument Preservation, Propstei Johannesberg, Fulda
Since 1980 numerous teaching assignments, guest lectures and seminars for colleges, technical colleges and universities in Germany and abroad
Since 1991 teaching position "building renovation technology" at the University of Applied Sciences Erfurt
1993 Award of the Hessian Monument Preservation Prize by the Hessian Ministry for Science and Art
1994 appointment as a member of the Hessian Academy for Research Planning in Rural Areas
1996 Award of the Kant diploma from the University and Kant Society of Kaliningrad / Russia
1997 appointed professor by the Thuringian Minister for Science, Research and Culture
Since 1962 numerous study trips and expeditions to the Middle and Far East, especially Tibet, Nepal, Bhutan, India and Mongolia, Central Asia, South America, Russia, comparative architectural studies
For more than 20 years in the top committees of the ARGE - Arbeitsgemeinschaft Historische Fachwerkstädte e. V. - actively active, for example on the board of directors, on the board of Deutsche Fachwerkstrasse and as chairman of the construction technology working group