〇Kazushi Moriishi¹, Kazuya Tomiyama², Yuki Yamaguchi¹, Keiichi Nishikawa³ (1.Obayashi Road Corporation, 2.Kitami Institute of Technology, 3.i system research Co.ltd)

〇Kazuya Tomiyama¹, Kazushi Moriishi², Yuki Yamaguchi², Keiichi Nishikawa³ (1.Kitami Institute of Technology, 2.Obayashi Road Corporation, 3.i System Research, Co. Ltd.)

〇Hinari Kawamura¹, Yoshifumi Nagata¹, Tomoaki Tokuno¹, Makoto Kameoka¹ (1.Shutoko Engineering Company)

〇Yumi Hyogo¹, Minoru Yamamoto¹, Isao Amano² (1.KURABO, 2.Hozen Maintenance & Management Engineering)

〇Atsutomo Hironaga¹, Kenji Hashizume¹, kazuaki hashimoto¹, yasuhiro matsuda¹ (1.West Nippon Expressway Engineering Shikoku Company Limited)

〇Yuu Shirai¹, Atsushi Kawakami², Kenji Himeno³ (1.NIPPO CORPORATION, 2.PUBLIC WORKS RESEARCH INSTITUTE, 3.Chuo University)

〇Kosuke Shimai¹, Shinichiro Nakashima¹, Akane Ikeda² (1.Yamaguchi University, 2.THE NIPPON ROAD Co.,Ltd.)

〇Toru Hashimoto^2,1, Jun Shinozaki³, Yukinori Masuya⁴, Masayuki Yoshikawa⁵, Mikio Urabe⁶ (1.Hinode Holdings, 2.Next-generation high-grade ground manhole promotion association, 3.Japan Sewerage New Technology Organization, 4.NJS, 5.Sansui Consultant, 6.Nissui Consultant)

〇Naoki Shishikura¹, Kouichi Yamanaka¹, Kunio Minegishi¹ (1.Nihon University)