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The Building and Construction Authority (BCA) in Singapore has already mandated the use of Building and Information Modelling (BIM) in all submissions by 2015, with the Land Transport Authority (LTA) likely to take a similar approach to information modelling in roads and rail projects.
Figure 1. Stilts
With BIM, workflows will shift from sequential to parallel. Collaboration and information exchanges can occur simultaneously. BIM will continue to serve multiple purposes while reducing duplication and redundancy. The industry direction suggests that those who take a reasonably sober view of this impending shift to BIM will be able to leverage on the new technology. We have thus, put together some of the key learning points for working effectively in BIM Projects.
Figure 2. BIM Workflow
BIM workflow needs to be properly structured to prevent the unnecessary resources wastage. Many BIM projects currently have parallel 2D and 3D BIM processes by 2 separate Project Teams, which leads to a waste of resources and may result in the final 2D and 3D BIM being produced in different context and design.
Figure 3. 2D Plan
The BIM authoring team is required to be familiar with the technique of creating Object Family Libraries (the Libraries) and populate the Libraries for future BIM project usage.
Project-based software training is the most effective method in ensuring that the BIM authoring team has the required skill and experience that are instantly applicable to the project requirements. It does not matter if the skill sets of the trainee are of basic, intermediate or advanced levels.
Figure 4. 3D Rendering
Proper Human Resources distribution and management are crucial in dealing with tight submission deadlines for 2 main tasks namely the design submission and amendment/clashes resolution, and re-submission. These tasks are recommended to be handled by 2 teams separately without intervening each other’s workflow.
Different preferences in BIM authoring tools and version may cause file format interoperability problems, resulting in extra efforts and costs to reproduce the documentation. BIM Specifications are required to clearly indicate the standardised BIM format and requirement for all parties in a project. Otherwise, written confirmation is needed to prevent any potential risks.
Figure 5. Project management timeline
The efficiency of BIM projects can be enhanced further by implementing a workflow for obtaining centralised BIM information and files exchange platform using a Project Management Solution. It is thus able to effectively capture important project information such as email correspondence, submittals, submission status, mark-up revisions and other useful reference and information.
The IT (Information Technology) team should study the BIM performance requirement to address necessary upgrades in workstation specification and be able to perform troubleshooting on BIM IT issues.
Many projects have the construction works and BIM works carried out on parallel without coordination. Construction may have even started before BIM Shop Drawings are produced, resulting in discrepancies between the BIM model and the As-built infrastructure. The data in the BIM model may not be useful for facility management purposes, which does not maximise the use of the information in the BIM database.
Eager to share your BIM knowledge with us?
Write in to AcePLP Training Department at [email protected].