This research aims at designing and engineering safety in the design, as well as construction, phases. BIM and parametric modeling are the tools that this research considers. This research limits its scope to construction workers falls from heights and presents a framework for employing the BIM concept in order to let the designers/constructors better study and analyze safety of construction workers. The research is developed on falls scenarios recorded from real construction projects, and prepared inputs for proposing properties of a parametric BIM model. The research presented in this paper challenges five different groups of hazards related to falls from heights (named Pentagonal Groups). Data in the five groups are composed of summary notes recorded from available Design for Safety (DfS) tools and construction fatalities repositories. Based on how the analytical logics investigate and study the impact factors (represented by summary notes), the critical aspects of the impact factors will show up in the analyses. The research creates an example scenario from the summary notes in each of the pentagonal groups. The scenario examples are comprehensive enough to cover the critical aspects of the pentagonal groups. The example scenarios are modeled in SketchUp, and as an interface, represent and challenge the critical aspects of the impact factors. Since this research aims at presenting the properties of a parametric BIM model, direct users of this research will be software developers. The parametric BIM application intends to improve collaboration of designers and constructors in implementing the DfS concept in the building construction projects. This paper presents the processes taken to turn the input data into the preliminary results of the research, which are the analytical logics and the scenario examples.
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