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Publication
Featured researches published by Kazumasa Ohashi.
Aij Journal of Technology and Design | 2012
Erika Shizu; Kazumasa Ohashi; Toyohiro Nishikawa; Tetsuo Yamashita; Shinya Masuda
A series of experimental study to investigate the bending strength and flexibility of steel sprinkler pipe through static loading tests, are carried out. These pipe systems don’t adopt flexible joints. To investigate the aging effect, aged pipes are tested and compared with new pipes. Moreover, to specify the service limit is lost due to leakage of water, the pipes subjected to load are filled with compressed air, and the air pressure is also measured together with the load and deformation. Based on the above experimental study, a simple way to approximate the failure deformation and load is proposed.
Journal of Environmental Engineering (transactions of Aij) | 2011
Kazumasa Ohashi; Toyohiro Nishikawa; Toru Endo; Tatsuma Fujimura
Aij Journal of Technology and Design | 2017
Yoshiki Yoneyama; Toyohiro Nishikawa; Kazumasa Ohashi
学術講演会論文集 | 2012
Erika Shizu; Toyohiro Nishikawa; Kazumasa Ohashi; Syunichi Yazawa; Hirotaka Watanabe
The Proceedings of the Materials and Mechanics Conference | 2011
Mitsuo Kobayashi; Masaya Ikino; Hisashi Saito; Kentaro Watanabe; Yoshiki Gotoh; Kanoo Itinose; Kunio Kokubo; Kazumasa Ohashi; Toyohiro Nishikawa
Journal of Environmental Engineering (transactions of Aij) | 2011
Toyohiro Nishikawa; Kazumasa Ohashi; Goro Seki; Takahiro Watanabe
Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services | 2010
Koichi Yokoyama; Kazumasa Ohashi; Toyohiro Nishikawa; Hironori Saito; Tatsuma Fujimura
Journal of Environmental Engineering (transactions of Aij) | 2009
Toyohiro Nishikawa; Kazumasa Ohashi; Goro Seki; Sho Ishii
Journal of Environmental Engineering | 2009
Toyohiro Nishikawa; Kazumasa Ohashi; Goro Seki; Sho Ishii
Journal of Environmental Engineering (transactions of Aij) | 2008
Toyohiro Nishikawa; Kazumasa Ohashi; Goro Seki
