1. Engineering Director, Japan Engineering Consultants Co. Ltd., Honcho 5-33-11 Nakano-ku, Tokyo, Japan.
2. General Manager, Tarumi Operation Office, First Operation Bureau, Honshu-Shikoku Bridge Authority, Koube City, Japan.
3. Chief Engineer of Structural Division, NIPPON Engineering Consultants Co. Ltd., Shichiza-choh 5-1, Koshigaya City, Japan.