OPTIMIZATION OF REINFORCEMENT COSTS IN FRAME–MONOLITHIC MULTI-STOREY CONSTRUCTION USING BIM-BASED MULTI-CRITERIA ANALYSIS
DOI:
https://doi.org/10.31649/2311-1429-2026-1-7-17Keywords:
BIM, Revit, optimization of constructions, Dynamo, Python, reinforcing, FEAAbstract
Reinforcing steel is one of the key materials widely used in modern construction. This study investigates an approach to optimizing the fabrication of reinforcing bars through the integration of Building Information Modeling (BIM) technology with visual programming in the Dynamo environment. The common practice of cutting and bending reinforcement directly on construction sites leads to significant material waste, which in turn increases project costs and negatively impacts the environment.
To address this issue, an intelligent Dynamo script was developed to automatically extract detailed three-dimensional (3D) spatial information about reinforcement, as well as four-dimensional (4D) scheduling data, directly from the BIM model. Based on the extracted data, the script performs material optimization by determining rational cut-off lengths for reinforcing bars, thereby increasing the potential for material reuse and minimizing waste generation. The effectiveness of the proposed approach was validated through real-world engineering case studies. The evaluation was conducted using comparative indicators, including the number of saved reinforcing bars, the reduction in waste quantities, and the overall cost savings achieved.
The results confirm that optimizing the rebar fabrication process can significantly reduce material losses and lower construction costs. At the same time, it was found that the effectiveness of the method depends on the type of reinforcement and the type of structural element. The most pronounced benefits were observed for medium-length reinforcing bars and for structural elements such as column. The proposed approach and the developed tool contribute to the advancement of sustainable construction practices and demonstrate the potential of BIM-based solutions for improving the design of reinforced concrete structures and optimizing material utilization.
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Copyright (c) 2026 Валерій Михайлович Андрухов, Андрій Сергійович Потєха
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