About the Author
Zihai Shi; R&D Centre, Nippon Koei Co., Ltd.; 2304 Inarihara, Tsukuba-shi, Ibaraki 300-1259He has engaged in renovation design of ageing sewers since 1995, and is familiar with resilience theories and practices in structural engineering. Shizuo Watanabe, Technical Supervisor, Bureau of Sewerage, Tokoy Metropolitan Government; Mr. Watanabe is the technical supervisor/deputy director at Bureau of Sewerage, Tokyo Metropolitan Government. Kenichi Ogawa, President, Tokyo Sewerage Service Co., Ltd. He is the former Bureau Chief, and has engaged in planning, design, construction and maintenance of Tokyo's sewerage system since 1977. Mr. Kubo is the senior managing executive officer of Sekisui Chemical Co., Ltd, which is a world-class maker of chemical products. He serves as the general director for development of high-performance chemical products, including the development of lining materials for sewer renovation.