*Kazunori Tomotoshi¹, Tomishige Hiraishi¹, Kyouhei Ambai² (1. Kumagaigumi, 2. Tetsudoukennsetsu･Unnyushisetsuseibishiennkikou)

*Masamichi Otaki¹, Syuji Sofue¹, Masaru Hashimoto² (1. KAJIMA, 2. Bureau Sewerage)

*yuichirou taniguchi¹ (1. toda construction)

*sou kobayashi¹, hiroaki kawahara¹, osamu kobayashi¹, taizou nakamura¹ (1. Toda Corporation)

*Keito Kinoshita¹ (1. KUMAGAIGUMI)

*e.g. Yutaka e.g. Chayama¹ (1. TODA CORPORATION)

*Kenichiro Nagamitsu¹, Shuichi Kato¹, Rikito Izumo² (1. TAISEI CORPORATION, 2. TEPCO Power Grid, Incorporated)