What are the advantages of BIM technology in cost management? Many cost engineers wonder whether learning BIM technology is necessary. Here, I would like to share three key points to help clarify this question.
1. Enhancing the efficiency and accuracy of cost estimation
Quantity calculation forms the foundation for preparing engineering costs. Studies show that quantity calculation accounts for 50% to 80% of the entire cost estimation process. Traditionally, cost engineers either calculate quantities manually or import CAD drawings into quantity calculation software, both of which are time-consuming. Although 2D graphic calculation software reduces the workload compared to manual methods, it still requires re-entering drawings into the software during calculations, consuming significant time and posing a risk of human error.
In contrast, BIM’s automatic quantity calculation capability allows computers to handle the core quantity measurement tasks, greatly increasing efficiency and reducing errors.
2. Offering technical tools to manage design changes effectively
Design changes are common in construction projects and often lead to budget overruns. Traditional methods struggle to handle these changes efficiently. BIM models, however, provide technical solutions to minimize design changes and improve early-stage control.
1) BIM can be used for comprehensive and rapid clash detection, enhancing design quality by optimizing pipeline layouts and eliminating on-site conflicts. This minimizes design changes caused by technical issues.
2) Cost engineers can collaborate with designers using BIM to proactively control cost variations caused by design changes. During the design phase, processes and schemes can be compared and optimized from a cost control perspective to reduce later changes. During construction, cost engineers can accurately quantify changes in quantities and costs from design revisions, providing timely feedback to designers and owners.
3. Facilitating the accumulation and sharing of historical data
While CAD technology has reduced the reliance on paper drawings, accumulating and managing project data remains challenging. Projects are growing in scale and complexity, especially large-scale ones, leading to vast amounts of data that are difficult to preserve and retrieve, particularly with frequent design changes.
Additionally, although digitization has advanced and cost estimation software is widespread, organizing, analyzing, and storing data effectively is still difficult. Some leading construction organizations have built internal databases to share cost and content indicators, but the timeliness and depth of knowledge sharing often fall short of practical needs.
BIM models enable detailed and precise analysis and extraction of relevant metrics, creating electronic data that is easy to store and share. These data serve as valuable references for future project estimation and review and form a core competitive advantage for cost consulting firms.
In summary, the above three points provide cost engineers with a clear understanding of the benefits of BIM technology in cost management. We look forward to more discussions to deepen this understanding.
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