A builder cries out for better BIM

I recently attended an informal evening discussion group that occurs every month in San Francisco, on issues related to BIM.  The person leading the discussion this time was Dace Campbell, of BNBuilders.  As a general contractor, his agenda that night was to cry out to architects everywhere about specific things we can do to make the BIM more useful to the construction phase.

Because he was an architect before he went into contracting (he still maintains his license), he is the perfect liaison between the two worlds.

You see, with any “collaborative” project, the design team should be sharing the BIM with the building team.  This, in itself, is a radical idea.  After all, our instruments of service have previously been pieces of paper with specific cropped views, which we make official by putting our stamp and signatures on.  Then we cannot be held legally responsible for anything other than those pieces of paper.  The CAD or Revit models we use to draw behind the scenes is our own business, thank you very much.

Because our industry has previously thought this way, we’ve fostered some pretty sloppy practices within our models.  We do things that may look fine on the paper when we print it, but make the model difficult to use for the builders’ purposes.  If we stick to this way of thinking, BIM’s full potential is badly wasted.

If we architects just keep it to our design team, the information can only be used for basic 3d visualization and coordination.  But if we jump to the next big step and share the BIM with the whole project team, then it can be used for all these amazing things:

  • Constructability reviews
  • Scheduling
  • Sequencing
  • Cost estimating
  • Bidding
  • Ordering materials
  • Above-ceiling/in-wall systems coordination
  • Prefabrication
  • Commissioning
  • Operating & maintenance

But just sharing it isn’t enough, if what we share isn’t useful.  So here is the little manifesto of things that BNBuilders wishes we would do, that would make all this possible:

  • Model it all - If it’s not in the model it doesn’t exist.  Remember when your professor in architecture school told you, “If it’s important, draw it.  If you don’t draw it, it means you don’t consider it important?”  Well now we’re modeling, not drawing.  Same rule applies.
  • Share the model - Share the actual source, not derivative extractions.  Using a program like Riverbed allows changes to constantly be communicated out to the whole team without having to “re-post.”  This doesn’t mean you stop using official Change Order or Informational Bulletins for changes during construction.
  • Assign Responsibility - Even when many people are contributing, make sure someone is responsible for bringing it all together and enforcing standards.
  • Level of Detail - Accurate scope, size, & location are far more important than lots of detail.
  • Model Standards - Practice good digital hygiene.  Don’t let people create repetitive partition types.  Don’t override dimensions. 
  • Support Bid Packages - Make sure the “I” in BIM is real information.
  • Reflect means & methods - Model it like you’d really build it.  If it’s a full-height wall, pull the walls all the way up to the slab so they can get an accurate material takeoff.  Don’t model guardrails using the “curtainwall” tool.
  • Revisions - Manage change or it will manage you.  Never change file names by adding dates to the end of them, for instance.  If you want to archive a certain spot in time, save the files with the same exact naming into a folder that is labeled with a date.
  • Verification - Test early, test often.  BIM should be accurate, above all.

During our discussion, we talked about the implications to the fee structure.  If the architect is still hired under a fixed fee and is not sharing in financial benefits that the building team gains from these extra efforts, why would we bother?  Why would I put in an extra hour to make life easier for you if my fees are already stretched too thin?

That’s why the owner should be doing Integrated Project Delivery (IPD).  The IPD compensation structure makes it so the design and building teams have one shared profit pool.  That means the team can shift some of the fee toward the architecture team to put better up-front work into the model, so the whole team benefits.

If you aren’t operating under an IPD structure and you know the owner wants a “collaborative” project, such that you’ll be sharing the BIM with the builders, architects should ask for a larger fee.  Mr. Campbell even said that he’s been asked to speak to owners in support of this idea.  A little extra time spent up front on the model will save a lot on the construction end.

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International Reach with your slippers on

“Teams can be co-located in a single room or dispersed across the globe, as the recent trend toward outsourcing has made clear. When networked electronically, even small firms can achieve international reach.” - Scott Simpson

There’s a great recent article in Design Intelligence, by Scott Simpson, talking about the ways collaboration technology changes our process of designing and constructing buildings.  Mr. Simpson is a smart guy, so I believe him.

The quote above says it all.  We at Opening Design are working hard to make it possible for you to have international reach, right from home with your slippers on and everything.  Stay tuned…

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Sometimes I like buildings better than people

There is one universal truth that you should probably know: There are no uninteresting people.  Truly.  Every single person has a fascinating life if you’re in the mood to hear it.

And buildings are like people.  There is nothing about buildings that isn’t interesting if you’re in the mood.

In fact, I think it takes just as much effort to make a building as it takes to raise a person.  Think of all the hours and effort from all those people it takes to make a building, over the few years it takes to realize a project.  Given that there are hundreds of people working toward a building project, it must be roughly equivalent to the hours and effort that go into the 18 years it takes to realize a full-grown person.  The love!  The frustration!  The mistakes!  The triumphs!

Each building is different, just like each child is.  So just because you’ve stumbled through raising your first child doesn’t mean you have all the answers for raising the second child (because it’s probably a moody middle child who refuses to come out of his room anyway).  And so it goes with buildings!

The cool thing about working on a building, however, is that you have a huge team of people to help you.  And the cool thing about OpeningDesign.com, is that we make that a little bit easier.  Use your team!  Use OpeningDesign! 

And of course, don’t hesitate to give us some feedback so we can make it even better and easier to use.  hello@openingdesign.com

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