11:10 AM - 11:20 AM
*Takeshi Okamoto1, Yoshitaka Hano1, Kenji Ishida1, Yousuke Nonaka2, Yuta Oka2, Takema Futami3, Shin Ikegami3, Mitsuya Miyamoto3, Takeshi Torichigai4, Yoshikatsu Miyauchi4, Hiroshi Oota4, Takashi Oota4 (1. NIKKO CORPORATION, 2. SEIA,Inc, 3. Nagaoka Ready-Mixed Concrete, 4. KAJIMA CORPORATION)