From BIM-Model to 3D Construction Printing (2024-05)¶

The growth of 3D construction printing needs appropriate integration into the planning and execution phases of building projects. With this aim, the Architecture, Engineering, and Construction sector (AEC) has been increasingly adopting building information modeling (BIM) systems to synchronize design and construction processes. This study proposes a technical workflow to manage 3D construction printing into BIM models, evaluating various procedures according to construction element features. Based on mature software platforms, the research details the data transfer process using a case study of a single-story home. The case delves into design procedures for constructing walls of varied shapes, adjustments in width, joints, openings, textures, fillings, and the insertion of reinforcements and services while also discussing requirements of other building elements. Work steps for managing design information and controlling printing machines are described. The study's outcome presents a comprehensive information flow, encompassing model segmentation, geometric data transfer, adjustments of details, and the generation of printing paths. Then, it is offered a discussion that underlines the importance of a synergistic digital information flow that merges both design and execution phases, promoting construction efficiency and the embrace of innovative technologies. The contribution of the paper focuses on technical design strategies for 3D construction printing, but also on suggesting an integrated process.