1. Architecture and Design Division, Penta-Ocean Constructio:n Co., Ltd.
2. Nakamura Research Institute
3. Dept. of Structural Eng.. Faculty of Eng., Hiroshima Univ.
4. National Institute for Resources and Environment, AIST, MITI
5. Explosives and Catalysts Division, Nippon Kayaku Co., Ltd.
6. Dept. of Structural Eng., Faculty of Eng., Hiroshima Univ.