1. Time-Frequency Analysis of Ultrasonic Echoes and its Application to Nondestructive Evaluation of Thermal Damage of Steel
	by  Shiwei MA, Tetsuya SASAKI, Etsuji YOSHIHISA and Takashi HONDA
	2. Requirements of Prevention Equipment against Falling from Roof
	by Yasumichi HINO
	3. Fundamental Study on Wind Pressure Acting on Temporary Scaffolds
	by Yasumichi HINO, Katsutoshi OHDO, Songpol PHONGKUMSING, Eizo MARUTA and Makoto KANDA
	4. Satability of Counterforted-type Sheet Pile Retaining Wall   --- For Sandy Ground ---
	by Yasuo TOYOSAWA, Noriyuki HORII, Satoshi TAMATE, Makoto ETOH,       Mitsuo SATO, Mitsuru EGUCHI and Norio FUJITA
	5. Survey on Commuting Stress and Accidental Falls of Elderly Workers on the Way to and from Work  - Building-Maintenance Industry -
	by  Hisao NAGATA and Sunyoung LEE
	6. The Dependence of Initial Pressure on the Autoignition Temperature of Flammable Liquid
	by Haruhiko ITAGAKI
	7. Study of Terms Connection in the Database for Explosion and Fire Accidents
	by Teruhito OTSUKA, Haruhiko ITAGAKI
	8. Characteristics of a New Apparatus for Measuring Ignition Energy of Dust Clouds having a Dispersion Mechanism by Ultrasonic Vibration
	by Mizuki YAMAGUMA, Kwang-Seok CHOI and Tsutomu KODAMA
	9. Electromagnetic Disturbance of Large-Scale Crane due to Broadcast on Medium Wave and Countermeasures
	by Hajime TOMITA
	10. Questionnaire Survey regarding on Manual AC Arc Welding Operation
	by Tatsuo MOTOYAMA, Hajime TOMITA and Eiki YAMANO
	11. Study on Usage of Safety Belt and Scope of Airbag for Fall Protection
	by Kiyoshi FUKAYA