- QUANTITY EXTRACTIONS
- DETAILED BILL OF QUANTITIES
- FABRICATION MODELS
- FEES COMPARISON
- TRADE SELECTION
- CERTIFICATION EVALUATION
- LIFE CYCLE COST
- COMPARATIVE STUDY
BIM involves more than just 3D modelling and is also commonly defined in further dimensions. 4D links information and data in the 3D object model with project programming and scheduling data and facilitates the simulation analysis of construction activities. 5D integrates all of this information with cost data such as quantities, schedules and prices. The greatest value in BIM5D lies in the ability to be able to utilise electronic models to provide detailed 5D estimates and living cost plans in real time.
Building Information Modelling (BIM) and automated quantities technologies provide both opportunities and challenges for the project cost management. As quantification increasingly becomes automated will need to incorporate 4D time and 5D cost modelling and sharing cost information/data with the project team as part of the BIM integrated project delivery approach.
Cost 5d management provides greatest value through a cost planning development at the conceptual front end stages of a project by providing cost advice and estimates on various design proposals and then refining those estimates as the design evolves. Using traditional 2D approaches this cost planning advice takes considerable time and inhibits rigorous comparative analysis within the allocated time frame for the design development process. The 5D Cost Management can do this extremely quickly, an endless number of times and in a complexity of combinations, can also re-estimate the developing design an endless number of times providing feedback on the estimate variances and corrective suggestions.
BIM and automated quantities technologies provide the profession with enormous opportunities to raise the value of their services to a much higher and sophisticated level. It is not simply about
automatic quantities generation. The ability to simulate a range of design options with real-time cost advice and continue that real-time cost advice throughout the detailed design, construction and operational stages will arguably place the project cost management at the top of the ‘value chain’ for project clients. It also places the BIM5D project in a powerful position to maintain and control key information the virtual model and drive cost performance on projects.