AIA TAP Building Connections Congress 2013 - State of BIM standards

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  • 1. AIA TAP: Building Connections CongressThere is no central BIM model...Léon van Berlo
  • 2. Léon van BerloBuilding Connections Congress
  • 3. Léon van BerloBuilding Connections Congress
  • 4. Léon van Berlo Building Connections Congress199?: Birth of “the central model”
  • 5. Léon van BerloBuilding Connections Congress
  • 6. Léon van Berlo Building Connections CongressMisconception (misinterpretation): Shared data model is NOT equal to: Shared BIM model instance Shared data Shared data model comes from the need to share/distribute data in a standardized way…. “let’s agree to all do it like this”shared data model == creating agreements (interoperability)
  • 7. Léon van Berlo Building Connections Congress huh…?So why do we need a “central” model?
  • 8. Léon van Berlo Building Connections CongressWhy a „central modelserver‟? Sharing large files (data)… What information do you share? Where does it come from? Merging / synchronization Revision management Alerts/notifications Knowing who to blame Etc… Lots of good reasons, but you know why!Could be just a useful gadget… …. like shoes with build in music players.
  • 9. Léon van Berlo Building Connections CongressOk, so which one should I choose?Which one is best as a „central‟ server? Huh? 
  • 10. Léon van BerloBuilding Connections Congress source: Nour
  • 11. Léon van BerloBuilding Connections Congress
  • 12. Léon van BerloBuilding Connections Congress
  • 13. Léon van Berlo Building Connections Congress “There is no CENTRAL model”(there are shoes with integrated music players)
  • 14. Léon van Berlo Building Connections CongressProof?
  • 15. Léon van BerloBuilding Connections Congress
  • 16. Léon van Berlo Building Connections CongressDenmark (June 2008):
  • 17. Léon van BerloBuilding Connections Congress
  • 18. Léon van BerloBuilding Connections Congress
  • 19. Léon van Berlo Building Connections CongressBut „we‟ (in the Netherlands) also know this...
  • 20. Léon van Berlo Building Connections CongressOur research:
  • 21. Léon van Berlo Building Connections CongressOur research: NO ROUNDTRIP (import/export in a chain of tools)
  • 22. Léon van Berlo Building Connections Congress Conclusion:The IFC data standard is stable and usable in an AEC collaboration environment IFC meets the needs of the industry (as described in the paper)
  • 23. Léon van Berlo Building Connections CongressOther observations (skip this during presentation) Users in the experiments in this research did not prefer a so-called „live synchronization‟. The median of synchronization time of model instances was 1 week (every Friday was a widely used practice). In a homogeneous software environment, users felt that all team members should have equal BIM software modeling expertise. The use of a reference model concept with IFC can lower the needed BIM competences for a project partner to be able to collaborate in a way that is sufficiently effective for the entire project team.
  • 24. Léon van Berlo Building Connections Congress Found conclusion: Working in a „central‟ modelserver (everybody the same tool) has more downsides than advantages.(ownership of objects, data overload, legal, change requests, etc...)
  • 25. Léon van Berlo Building Connections CongressWhy do people still do it?
  • 26. Léon van Berlo Building Connections Congress Why do people still do it? “It‟s simple, easy and quick”“We just send/share everything we have”
  • 27. Léon van Berlo Building Connections Congress The real question (which is difficult):What does the other person need to do his job? What do I need to do my job?
  • 28. Léon van Berlo Building Connections CongressMVD Model View Definitions Are about defining the baseline to perform your job Are about your core business…..By the way: same goes for all the „ie‟ standards!
  • 29. Léon van Berlo Building Connections Congress And when you know your job,and you know what you need to do it……
  • 30. Léon van Berlo Building Connections Congress...you don‟t need a central modelserver at all.
  • 31. Léon van Berlo Building Connections CongressThere is no central BIM leon.vanberlo@tno.nl twitter.com/berlotti