In a collaborative environment where many firms add content how do you track the provenance of content and the pertinence of the embedded data? Arup, for example, has created in-house libraries of over 25,000 intelligent BIM components for its engineering and architecture projects - that is a lot of models to police and maintain. When product catalogues change and old components are used, who has responsibility and liability for that at the time of discovery? There is also a very significant overhead with generic objects because the data properties have to be changed manually, increasing the likelihood that something will be mis-specified. However, the risk here is that these generic models will get forgotten and left in place, only corrected in a written specification, thus breaking the model / data co-ordination. Some firms choose to download and use generic models, which can be updated later in the process, with the correct fixtures and fittings.
With analytical tools, simulation and design changes impacting all systems, BIM practitioners look to see where time can be saved, particularly when it comes to content.ĭownloadable objects can reduce modelling costs and cut the total project time given that many projects require new ‘families of parts’ (intelligent components).Ĭhoosing real-world components from manufacturer catalogues will bring forward decisions on interior fittings such as doors and windows, escalators, lifts and glazing. BIM pulls forward many design decisions and places many design activities, which used to be linear, into simultaneous or parallel alignment. Work load can become heavily front-loaded when moving to a Building Information Modelling (BIM) process.
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