Design, investment, and bidding are arguably the most critical phases of a construction project before its full launch. The engineering costs incurred during these stages directly affect how much the owner needs to invest, how much the bidding parties will allocate, and ultimately, how much can be saved. Traditionally, these processes have relied heavily on experience, but the emergence of BIM is transforming the landscape. Today, we will explore how BIM cost applications are impacting design, investment, and bidding.
Planning and Design Phase:
The planning and design phase marks the project’s initial stage, where cost plays a crucial role in determining the owner’s future investment. Increasingly, clients and property owners are requesting design units to work within strict cost limits. However, traditional 2D workflows mostly depend on experience and lack a comprehensive historical cost database linked to design, leading to significant errors and low accuracy.
With BIM, it is possible to create detailed models that integrate cost indicators and data, enabling rapid analysis and budgeting of project quantities. A BIM-based cost database allows for comparison, control, and analysis of historical project costs, dramatically improving calculation accuracy and precision. This system can quickly generate preliminary budgets and verify whether these budgets align with design requirements, effectively supporting cost-limited design strategies.
Investment Decision-Making Stage:
In traditional 2D workflows, establishing a reliable cost database for engineering estimation is challenging. Estimations often depend on manual or empirical methods, which results in low accuracy, inefficiency, and difficulty controlling budgets during preliminary estimations and final accounting.
By creating a BIM model, all cost-related metrics—such as economic factors and material unit prices—can be stored within the project model. Leveraging BIM’s automation capabilities allows for detailed cost analyses at the individual project level and helps build a comprehensive enterprise BIM indicator library.
Accumulating data from previous projects forms a substantial BIM database, closely tied to project costs and providing valuable information and technical support for future endeavors. Real-time data retrieval and integration offer critical decision-making insights for ongoing development, enhancing cost control during later project stages.
Bidding Stage:
BIM technology enables swift preparation of cost proposals. Using the cost indicators and data embedded in the BIM model, companies can overcome the complexity of engineering quantity information by generating a bill of quantities tailored specifically to the project. This approach minimizes omissions and calculation errors caused by intricate data.
The bill of quantities can be directly loaded into the BIM model. When distributing bidding documents, construction units can share the BIM model containing the detailed bill of quantities with bidders, ensuring complete design information is communicated.
Furthermore, construction teams can use BIM to analyze the owner’s list and apply unbalanced quotations to guide settlement prices, potentially achieving settlement profits exceeding 10%. Despite these advantages, many construction firms have yet to widely adopt BIM software and capitalize on these opportunities.
That concludes our discussion on the application of BIM cost management in design, investment, and bidding. With ongoing research and deeper integration of BIM technology in China, we anticipate it will provide significant support in cost management for traditional construction projects, unlocking substantial benefits.
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