Seiji Hashimoto* and Yutaka Terashima*
* Department of Environmental Engineering, Kyoto University

+ Correspondence should be addressed to Seiji Hshimoto:
(Yoshida-honnmachi, Sakyo-ku, Kyoto 606-8501 Japan)

Abstract
Estimation methods of waste generation from building demolitions were examined, and demolition waste generations in the near future (including hazardous wastes) were estimated in Japan as a whole. Conclusions are as follows: 1) estimation methods of building demolition corresponding to existing statistics data and changes in building life span were improved; 2) statistics values for wastes from building demolition could be underestimated; and 3) demolition waste generation was estimated to be doubled in 2010 as compared to those in 1990, with generation from non-wooden buildings being larger than those from wooden buildings due to the increasing generation of concrete waste, and CCA-impregnated wood and vinyl chloride wastes will increase rapidly, estimated to become 3 times in 2010 as much as those in 1990.

Key words: construction waste, demolition waste, hazardous waste, building, life span