When we started the Autodesk project, we assumed that the project would use a single model (comprised of several Revit files, of course) during design and construction. Not the case.
The short answer: M/E/P/FP
The long answer: Our subcontractors, who are “BIM-enabled” and have been using 3D programs for quite some time, cannot use Revit MEP. There are the obvious reasons of the lack of content in the library, but the real reason is software functionality: Revit MEP cannot do the appropriate calculations and Revit MEP doesn’t support spooling, an important function for pre-fabrication.
Because of this, for the past few months, two models have been developing concurrently and separately: the engineering model (Revit) and the fabrication model (CAD-MECH, Hydra-CAD, etc.). Coordinating the content to make sure they are identical has been quite an effort, and we have had issues with it from the start. It is near impossible to verify that every tweak and change that KlingStubbins made was communicated to the subcontractor - tools like Model Compare work in concept, but not in reality, when design is moving so quickly.
The solution came from the subcontractor and ended up being quite obvious and simple – short-term co-location. For two days last week, the HVAC engineer and subcontractor worked side by side at KlingStubbins Cambridge (the engineer is actually based in
It was the most logical thing – and it was definitely an “IPD success moment”.