〇KAZUO ENDO¹, KENTAROU NANGO¹, TOSHIMITU MAEDA¹, KENICHI NOTOYA², TAKATO YAMADA² (1.SHIMIZU CORPORATION, 2.Ministry of Land, Infrastructure, Transport and Tourism)

〇Yoshisuke Katayama¹ (1.Nippon Steel Engineering Co.,Ltd.)

〇Hirotaka Sato¹, Taro Sekiguchi¹, Notoya Kenichi², Yamada Takato² (1.Nippon Steel Engineering Co., LTD., 2.Kanto Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism)

〇Daisuke Deguchi¹, Taisuke Uenishi¹, Manabu Hashimoto¹, Takayoshi Tomii¹, Kenichi Notoya², Takahito Yamada² (1.OBAYASHI CORPORATION, 2.Ministry of Land, Infrastructure, Transport and Tourism, Kanto Regional Development Bureau, Tokyo Airport maintenance office)

〇Hiroshi Hamada¹, Takahiko Amino¹, Akira Miyazawa¹, Yoshimasa Nishisaka², Kenkichi Tashiro² (1.TOA CORPORATION, 2.NIPPON CORROSION ENGINEERING)

Takumi MATSUMOTO¹, 〇Makoto HORISAWA¹, Shintaro EBINA², Shinsuke UYAMA², Chiaki YAMAGUCHI² (1.East Japan Railway Company, 2.NAKABOHTEC CORROSION PROTECTING)

〇Akio Yasui¹, Masahiro Tamai², Masayuki Kurita¹, Hideo Kubota³, Tomoaki Yamanaka⁴ (1.NIPPON INSIEK, 2.OSAKA SANGYO UNIVERSITY, 3.NISHI OSAKA FLOOD CONTROL OFFICE KANZAKIGAWA BRANCH OFFICE, 4.NISHI OSAKA FLOOD CONTROL OFFICE)