BIM based collision tracking at the intersections of different building engineering systems at the design stage

Reduction of design errors, minimisation of rework and the improvement of the design productivity are key factors in building engineering systems (including structural and architectural solutions, ventilation systems, sewerage systems, water supply and heating systems, power supply systems, and communication networks). These goals can be achieved with a complex approach that prioritises the design of different building engineering systems in the model during the design phase, in order to provide a consistent design for different building engineering systems. The paper presents a novel approach for the application of plugins in building service systems with the elimination of collision in the focus. Collision reduction actions in this methodology are categorised into three levels: the code level, which pertains to plugin developers; the algorithm level, which relates to BIM coordinators; and the user level, which concerns engineers performing the check. This new systematic approach to collision resolution prioritises maintaining the consistency of collision detection across different systems and storing all information about each collision. Collision checking is based on several key factors, such as complying with the sequence of checking systems, excluding irrelevant collisions, and setting tolerances when joining system elements. The aim of our approach is to automate and expedite not only the identification of the intersections but also the subsequent work with it throughout the entire project life cycle. The results are demonstrated by a case study conducted in the frame of a real project.