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5 Things (maybe) surprising things you (might) not know about BIM:
- BIM is not Revit, and Revit is not BIM
- There is no central BIM model
- "BIM does not enhance collaboration”
- You don’t need a special BIM manager
- and others....

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5 things about BIM you did not know

  1. 1. BIM mythes Five surprising things you did not know about BIM Léon van Berlo
  2. 2. Original title: 5 things about BIM you thought were true, but are not This part might become a bit provocative…
  3. 3. Now: Five (maybe) surprising things you -might- not know about BIM But some might still be a bit provocative…
  4. 4. Let’s start simple:
  5. 5. Let’s start simple: BIM is not Revit
  6. 6. Let’s start simple: BIM is not Revit …. and Revit is not BIM
  7. 7. Let’s start simple: BIM is not Revit …. and Revit is not BIM Just like Archicad, Vectorworks, Tekla, etc… is not BIM
  8. 8. What is BIM?
  9. 9. What is BIM?
  10. 10. What is BIM? Some say it is a process, some say it is a philosophy, some say it is collaboration, some say it is data*, some say other things…. But all agree that is is nót about software. * = the smart ones ;-)
  11. 11. Next one…. (a bit more difficult)
  12. 12. There is no central BIM!
  13. 13. Yes, I’ve seen the pictures…
  14. 14. Most are based on this original concept of a “Shared data model”
  15. 15. Common misconception (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)
  16. 16. source: Nour
  17. 17. “There is no CENTRAL model” (in a project)
  18. 18. Ok…. Everyone has their own “central” model
  19. 19. How to exchange data? How to “connect the dots”?
  20. 20. This is where the “Shared data model” comes in
  21. 21. BIM data flow through standards: reducing interfaces
  22. 22. Do others know about this?
  23. 23. 2006:
  24. 24. June 2008:
  25. 25. NL (2012):
  26. 26. Sidestep Conclusion from research: “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)
  27. 27. Other observations 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). 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.
  28. 28. Found conclusion: Working in a ‘central’ modelserver (everybody the same software tool) has more downsides than advantages. (ownership of objects, data overload, legal, change requests, etc...)
  29. 29. Next….. (third)
  30. 30. “BIM does not enhance collaboration” (mind the quotation marks)
  31. 31. “We just send/share everything we have”
  32. 32. The real questions are: - What do I need to do my job? - What do others need from me to do theirs?
  33. 33. Everyone brings their craftsmanship and expertise to actually collaborate
  34. 34. Next…. (number 4)
  35. 35. You don’t need a special BIM manager
  36. 36. Remember the previous slides? Where is the central stuff? You know……. the black box?
  37. 37. Collaboration: Forget about the black box*! * = Yes, this “there is no central BIM” is again the message
  38. 38. Think twice about a BIM manager (he is the gatekeeper of the black box) “BIM Management” is about data/information management and should be a competence of every project manager.
  39. 39. Last one….
  40. 40. Last onessss…. (cheating a bit)
  41. 41. There are too many…. “You need an object library to really work with BIM” “BIM doesn’t work in an early design stage” “Too many details in a BIM give false accuracy” “BIM is expensive and the client won’t pay for it” “Modelling a BIM can be outsourced to India Something with trust “openBIM is better” “You can not do proper BIM without a BIM protocol” “We are ready, but the technology is lacking behind” “BIM is new and a hype but is will slow down soon….”
  42. 42. Lets hope many of them will be busted during the case study presentations!
  43. 43. Questions? leon.vanberlo@tno.nl @berlotti
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5 Things (maybe) surprising things you (might) not know about BIM: - BIM is not Revit, and Revit is not BIM - There is no central BIM model - "BIM does not enhance collaboration” - You don’t need a special BIM manager - and others....

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