Ageing makes faster progress in Korean than any other countries, which has resulted in social problems including decrease in economic population and such phenomenon is not what happened in Korea alone. Japan where the ageing reaches a certain level has suffered social conflict and problem such as a generational conflict and the measure to deal with such problems has been sought.

Such a social problem in ageing society is not limited to humanities and social sector. Generally the facilities and the standard in our society have been designed and built for the ordinary person (young adults) and thus the aged complains of the inconvenience when using the facilities which however are convenient and safe for the ordinary person. According to KICT (2017), most of the aged feels the physical inconvenience when using the stair, pedestrian overpass and ramp, pointing out particularly too many steps and a high kick plate (step height)

According to the study on walking pattern of the aged on flat surface by Roh (2015), those who have a good physical condition or walking ability among the aged who can walk alone (without  walking assistance device) accounts for 82% when comparing to the ordinary person. Among the aged who do not use the stick or walking assistance device, those who feel the inconvenience with walking is only 54% of the walking ability of the ordinary person. Falling accident is attributable to such poor walking ability (particularly dynamic balance ability and physical strength.

 The aged would surely feel more physical inconvenience when walking the stair or ramp than walking the flat surface and this study thus is intended to measure the walking pattern and physical conditions while the aged is walking the ramp and then develop the design factors and criteria for walking facilities based on data from the measurement, which would help prevent the falling or slipping  by the aged while walking, thereby making commitment to reducing the resultant social and economic cost.