

We currently have a large facade model which due to some rather over enthusiastic use of detailing (damn you CAD users who think Revit is like autocad!!) has got rather over-sized. I'm looking at splitting out the sheets that are causing the damage into a separate model. Are there any inherent issues with this that I'm missing before i go ahead?
Don't do it. Separating "sheets" from the model is antithetical to Revit.
I have splitted a very big model (milk plant) in sheets and 3d model, but that was because in that model there were multiple projects and the model would be altered the next 10-20-30-40 years with new projects every year.
I would not recommend it for a normal project, it takes up a lot of extra time to make sheets in 1 model and 3d in another model.
Then it's an awful BEP that's not adding value and is only creating senseless busywork. Seriously.
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Splitting a model because of file size is like asking your cat how good your model is...sigh
not really, otherwise the M&E engineers would just issue 1 model that is 4.5Gb in size, the facade guys would do the same and it would just be unworkable in Revit. It's quite common in the UK to ask people to limit sizes on large projects so that other design team members are able to use the models and keep their own running at a decent speed.