A Study on the Design of Optimum Dimension of Staircase -Focused on the Minimum Dimension of Riser, Tread and Slope for Safety on Staircase-

The purpose of this study is to suggest the method of prevention of staircase accidents, and to make housing environment better through researching the dimension of a housing staircase for Korean. The scope and method of this thesis is to investigate the dimension limits of a staircase (slope, minimum width of tread, maximum height of riser), and to analyze the characteristics of foot condition (jutting rate, foot angle, ball joint, nosing clearance, clearance distance) using the experiment which takes a photograph of foot motion during walking stairs. The results of this thesis are as follows. The slope of a staircase in house is $32.3^{\circ}$$^{\circ}$-$42.1^{\circ}$$^{\circ}$. The riser should be less than 190 mm. The minimum size of tread is 210 mm and proper size is 270 mm.

계단의 적정치수 계획에 관한 연구 -계단에서의 안전을 위한 단높이, 단너비, 경사도의 최소치수를 중심으로-