4:20 PM - 4:30 PM
*Naoki Matsumura1, Masakuni Hatano1, Kotaro Seki2, Kohei Noda2, Hisayoshi Itatsu3, Takumi Fujii3 (1. Shimizu Corporation, 2. Shimizu, Takenaka Civil Engineering & Construction,adachi Joint Venture, 3. Japan Sewage Works Agency Tokai Regional Office)