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Jiabin Wu, Jonas Schlenger

• Building designing is an iterative process of developing design concepts while fulfilling various requirements. Design parameters, dependencies, and constraints are embedded in the BIMbased design environment to support automated design adaptation techniques. However, only a small part of design constraints is explicitly represented in the digital models as design and engineering knowledge, and most studies focus on constraints on single object levels. To address this issue, this paper presents a workflow for enriching building knowledge graphs with design-oriented constraints. This research aims to extract constraints through embedded design parameters automatically. Data retrieval queries and analyses for model constraints are accomplished based on the extracted RDF graph that represents the intended building topology. Maintaining the users’ design intent and obeying the consistency constraints, the graph-based approach dynamically computes the range of design parameters potentially associated with the requirement constraint fulfillment. Due to the graph structure, cascading effects of element displacements can be considered on various levels of adjacency.