1999 Volume 64 Issue 521 Pages 159-165
This paper describes safety issues of stairs. Questionnaires have been sent to 90 male and females of 10 to 89 year old to investigate how they think about stairs regarding insecurity feeling. Relationships between stairs dimensions and human movements were clarified through video recording analysis during ascending and descending five different types of stairs actually in use. The following conclusions have been drawn as the causes of accidents: 1) users adapt themselves by conscious efforts to the size of steps, 2) slight inattention might cause thrumming down stairs, 3) need to verify if the tread and riser are acceptable.
