Noboru Yasui

Upward Flame Spread along a Vertical Solid for Transient Local Heat Release Rate

Theoretical and experimental analysis of turbulent upward flame spread along a vertical solid is presented A conventional flame spread model based on a linearized flame height approximation is generalized to incorporate burnout effects. The model is verified against full-scale flame spread tests using material heat release data obtained from intermediate-scale tests in which the time history of surface heat flux during the flame spread tests was reproduced.

Fire Safety Performance of Japanese Traditional Wood/Soil Walls and Implications for the Restoration of Historic Buildings in Urban Districts

Grass-root research activities to clarify fire safety performance of Japanese traditional wooden construction are introduced. The activities aim to resolve conflict between the restoration of historic buildings and the reduction of risk and hazard of urban fires. Among various activities, scope and results of fire resistance tests on traditional soil wall assemblies supported by timber frame are reported in detail. The test results indicate an encouraging prospect for the rational fire safety assessment of historic buildings and further development of fire-safe traditional constructions for the restoration of historic buildings and historic urban districts.

INFLUENCE OF FIRE EXPOSURE ON THE MECHANICAL PROPERTIES OF WOOD

本論文の実験の骨子及び結果の一部(ケヤキ)については,文献18)で口頭発表した。 *1 早稲田大学大学院 Graduate School, Waseda Univ. *2 早稲田大学理工学術院 教授・工博 Prof., Department of Architecture, Waseda Univ., Ph. D. *3 早稲田大学理工学研究所 招聘研究員・博士(工学) Visiting Researcher, RISE, Waseda Univ., Ph. D. *4 東京都庁 工修 Tokyo Metropolitan Government, M. Eng. (当時 早稲田大学大学院) (Former Waseda Univ.) *5 独立行政法人森林総合研究所 博士(工学) Forestry and Forest Products Research Institute, Ph. D. *6 亀山建設(株) 代表取締役社長・工修 President, Kameyama Construction, M. Eng. *7 椙山女学園大学 教授・工博 Prof., Sugiyama Jogakuen Univ., Ph. D. *8 東京大学生産技術研究所 教授・博士(工学) Prof., Institute of Industrial Science, The University of Tokyo, Ph. D. *9 独立行政法人森林総合研究所 Forestry and Forest Products Research Institute

Experimental Study of Time to Onset of Flashover in Classroom Size Compartment

A 3-year experimental research project, involving full-scale fire tests, was undertaken to investigate whether quasi-fire-resistive wooden building with supplemental fire safety measures, if necessary, could reach the equivalent level of the fire-resistive building, especially for safe egress of occupants. Flashover is one of the most important phenomena, relating to safe egress of the occupants. In this paper, the results of five types of fire tests are reported to investigate the effects of wood interior finish and loaded combustibles within the compartment with a floor area of 63 m2 and 150 m2, on the time to onset of flashover.