Circulation analysis of design alternatives for elderly housing unit allocation using building information modelling-enabled indoor walkability index:

In retrofit-purposed projects such as building renovations, the early decision-support mechanism to determine an optimistic circulation plan and spatial allocation is strongly required for architects, owners and residents. In this paper, we introduce such a case study based on the building information modelling-enabled approach that has been explored using an actual project at Yeongwol, South Korea for resolving diverse residential types, including elderly housing units. The objective of this paper is to demonstrate an actual analysis of building remodelling design alternatives regarding indoor circulation and spatial allocation problems, especially considering elderly housing units. Another significant feature of this paper is a quantitative and explicit approach to the indoor walkability index using building information modelling. After acquiring indoor circulation data, such as metric distances between rooms, number of turns, spatial depth, vertical access, or any other BIM-enabled data, an appropriate...