- 2001 - 2004 横浜国立大学大学院工学研究院教授
- 2001 - 2004 Professor, Faculty of Engineering, Yokohama National University
- 2004 - - 国立大学法人 横浜国立大学大学院工学研究院教授
- 2004 - - Professor, Faculty of Engineering, Yokohama National University
- 1999 - 2001 横浜国立大学工学部教授
- 1999 - 2001 Professor, School of Engineering, Yokohama National University
- 1998 - 1999 建設省建築研究所長
- 1998 - 1999 Director General, Building Research Institute, Ministry of Construction
- 1997 - 1998 建設省建築研究所研究調整官
- 1997 - 1998 Deputy Director General, Building Research Institute, Ministry of Construction
- 1994 - 1997 建設省建築研究所企画部長
- 1994 - 1997 Director, Research Planning Dept.,Building Research Institute, Ministry of Construction
- 1991 - 1994 建設省建築研究所建築生産研究部長
- 1991 - 1994 Director, Building Production Dept., Building Research Institute, Ministry of Construction
- 1983 - 1990 建設省建築研究所実大構造物実験室長
- 1983 - 1990 Division Head, Large-Scale Testing Division, Building Research Institute, Ministry of Construction
- 1981 - 1983 建設省建築研究所施工技術研究室長
- 1981 - 1983 Division Head, Construction Technology Division, Building Research Institute, Ministry of Construction
- 1976 - 1981 建設省建築研究所国際地震工学部研究員
- 1976 - 1981 Researcher, International Institute of Seismology and Earthquake Engineering, Building Research Institute, Ministry of Construction
- 1968 - 1976 建設省建築研究所振動研究室研究員
- 1968 - 1976 Researcher, Vibration Div., Building Research Institute, Ministry of Construction