I have a job we did in Microstation 5 years ago.
These are all dgn. files
Full Model was created
A model for each for 1st and second floors
And smaller models....
All of these referenced into a over all Master Model
Building Sections and Major sections all created from the model
A live model where All Building Elevations,
All Interior Elevations

Operating system used: Mac Intel-based
Eric Milberger, Architect | Master Planner