I work for a state agency and we do MOST of the design work in house (and when a project DOES get out-sourced, the contract requires the consultant to provide us with the digital AutoCAD and/or Revit files done to our CADD Standards).
We're trying to come up with a work-flow so that we can always have an up-to-date model on which we base a new project (so that any changes/additions/demolition that happens during a project gets implemented in the "MainModel"). If there is just one project on a building at a time, we could simply overwrite the old "MainModel" with the updated model file after the project is completed (as part of the As Built update).
But that won't work well if there is more than one project happening on the same building at a time. If the bldg. in question is large enough, there might be 2 or even 3 projects under design at the same time.For those of you who either maintain a model over multiple projects, what methods do you use?