While Building Information Modeling (BIM) offers clear advantages in engineering cost accuracy and efficiency, it also presents challenges—much like the yin and yang symbol illustrates balance and duality. In this article, we explore the impact of BIM on cost management from a different perspective.
Working Method: Cost professionals rely on information extracted from the BIM models created by designers to prepare accurate cost estimates. However, the data generated during the design phase must be carefully filtered to match the level of detail required for cost estimation at various project stages. This means aligning the information provided by designers with the specific needs of cost preparation.
Workflow: Cost estimators are ultimately accountable for the accuracy of cost outcomes. To ensure this, they need to be involved early in the design process, collaborating with designers to define the composition and information of project components. Without early involvement, verifying and correcting BIM models after the fact can be time-consuming and inefficient.
Constraints: Engineering costs are influenced not only by quantities and prices but also by factors such as construction methods, processes, and site conditions. Currently, there is no universal standard for BIM models that incorporates these constraints. Therefore, it is essential to develop project- and company-specific standards—such as classification systems for building elements, pricing lists, and decisions on whether to use company or budget quotas for pricing—to better reflect real-world constraints.
In summary, BIM exerts a complex, dual influence on cost management. Cost professionals should be aware of these challenges and incorporate them into their BIM training to enhance their expertise and effectiveness.
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