Stairs are a must for going to other floors. And there are little studies of stairs that distinguish between ascending and descending. The purpose of this study is to investigate the relationship between dimensions of stairs and ratings of impression with walk, and to suggest advisable dimensions of stairs.
The following conclusions were obtained: 1) subjects can grasp various dimensions of stairs, 2) dimensions of stairs 150mm-170mm rise and 290mm-330mm estimated safety and satisfaction enough, besides feeling comfortably, 3) evaluation for dimensions of rise are different between ascending and descending stairs, 170mm-190mm rise get best evaluation for descending stairs.
