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Before explaining "why architects model", I need to clarify what "model" means:
Mo-del verb To insert a 3d object into a file (i.e. a RFA into a Revit model)
It does not refer to any drafting that is done in the file or any of the sheets in the file.
An architect models for 1 of 4 reasons:
- To develop the design
- To communicate the design
- To make decisions
- To document decisions
Except...when they are working with a contractor who could use 3d information...right?
A quick elaboration on the virtual construction roles at Tocci:
Virtual Construction Planner
- preconstruction-based position, but involved throughout construction
- assess new projects & specific VC needs of new projects
- issue RFPs for creation of BM types
- review DCRs, QAQC issues & deliverables relating to 2d conversions
- push models through middleware for 4d and 5d
- review, assess and provide ongoing VC needs for projects
- manage object library and templates
- manage & coordinate R&D efforts
- manage & coordinate software/hardware needs
Virtual Construction Modeler
- preconstruction-based position
- create or manage creation of BM types
- QAQC internally and externally developed models
- create DCR reports
Virtual Construction Coordinator
- operations-based position
- create visual schedules
- update visual schedule
- assist project management and site staff in utilizing model
- update BM types, based on as-built conditions
After much discussion and debate, the issues relating to Tocci BIM titles have been resolved!
We have switched from BIM to VC - virtual construction. We have created 3 roles: Virtual Construction Planner, Virtual Construction Coordinator and Virtual Construction Modeler.
I am now a Virtual Construction Planner!

I don't usually like to post on Revit specifically, but when I saw this on Revit Zone, I knew I had to post it. Others may have seen this, but if you haven't enjoy.
I think that the 6 phases can definitely be applied to implementing BIM as a contractor.
Phase 1 - Initial Excitement
Wow! Look at what BIM can do: clash detection, estimating, scheduling! Does it get any better?
Phase 2 - First Bump
Wait - I actually have to model design documents because the architects I work with aren't using it?
Phase 3 - Ignorance is Bliss Stage
This isn't so bad. Creating models isn't too much work. Model a wall, phase it, export a schedule to Excel, clash in Navis. This is nice.
Phase 4 - WTF StageI have to change my process!?!Phase 5 - EnlightenmentThings are starting to make sense. You have begun to develop and implement a process. You aren't completely out of the woods, but you know that you can get through implementation. You are starting to find other BIM-savvy partners: owners, designers, subcontractors and even other buildersPhase 6 - Zen of VDCYou no longer say BIM; you understand that BIM is just a buzz word for something called virtual design & construction. You easily collaborate with owners, designers and subcontractors, without a thought about legal implications. Superintendents and project executives alike reference the model when discussing potential issues.
I think that we're in phase 5.