Cost dynamic control is a widely used management approach in project management aimed at improving cost control capabilities. Essentially, it involves regularly comparing planned costs with actual expenses during the construction phase and then implementing corrective measures based on real-time data to maintain effective cost management.
Successful cost dynamic control relies heavily on large volumes of data. The key challenges in traditional construction cost control include timely and accurate data acquisition, efficient data integration and processing, and straightforward data comparison methods. BIM technology offers a significant advantage in addressing these challenges by leveraging computer technology to efficiently store, integrate, and process vast amounts of data.
Compared to CAD, BIM technology represents a deeper application of computer technology in construction engineering. Its main roles in cost control include: ① assisting cost savings through computer technology, ② supporting cost accounting with data information, and ③ providing features that enhance cost savings and control.
Computer-assisted cost savings are evident in functionalities such as 3D model visualization, drawing issue detection, clash detection, elevation checks, and site layout planning. These capabilities inherent to BIM technology add significant value to project cost control. Unlike traditional drawing reviews, which rely heavily on the construction team’s experience and often detect issues only during construction, BIM enables most problems to be identified and resolved before work begins. The finalized 3D building model serves as a virtual pre-construction stage, clearly revealing drawing inconsistencies. Clash detection further refines this process by coordinating across multiple disciplines—structural, mechanical, electrical, HVAC—allowing potential conflicts to be resolved in advance. Additionally, BIM’s 3D visualization tools facilitate pre-simulation of site layouts and safety hazard assessments, all of which contribute to effective cost control.
Dynamic cost monitoring supported by data involves using the information contained within BIM models for statistical analysis and breakdown. This enables real-time tracking of data at any point in time and for any engineering quantity, allowing for continuous comparison between progress plans and cost budgets to maintain dynamic cost oversight.
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