When's the best time to validate meta data?


June 12, 2015

At a recent BIM event a presenter was discussing workflow suggesting Meta data should be corrected using clash detection software. I can clearly see the advantages and benefits for clash detection tools working through multiple model layers making sure pipes don't go through columns etc. I don't with Meta data, it's a different ball game.  Its the wrong end of the workflow because Meta data accumulates and it changes as the project progresses from inception to handover and the Meta data is used constantly for reports.

I might be wrong, maybe I miss understood what was being said but it doesn't seem very efficient for mistakes in Meta data in multiple instances of an item to corrected in this manner.  Particularly when we could be talking about thousands of the identical item being used across a campus such as a door, light fitting, power socket, chair, table .....

Dilemma do I let this pass or do I make a comment!

I stopped the presenter in mid flow asking why wouldn't you a centralized room and FFE data in libraries to easily manage Meta data about an item in one place then use the same Meta data for every instance of the said item?  

So you are saying if the Meta data is wrong for 6,000 chairs then the clash detection tool will indicate 6,000 times there's a mistake!  I can't help thinking this just becomes noise which drowns out the more important clashes needing to be detected in projects models.  

The audience was new to BIM, they need to be exposed to the most efficient and productive methodology to manage the volume of Meta data associated with a project.  If we get this wrong from the start it only amplifies the issue for each and every new project reducing the economic benefit of BIM.

Reality check - Yes it does mean there's another tool needed but its important to have the right tools in your tool box for the job and not make heavy weather of things you don't need too.

BIM is not just 3D Design and Clash Detection software

For BIM to work effectively and delivery the much publicized productivity changes then it needs allied software such as cost management, project management, clash detection, data management etc.

BIM is not just software, its process, protocols and people working together in a unified and collaboratively workflow.

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