At various points in a BIM project, Revit models may get passed from one consultant or contractor to the next. After this handover occurs, a change in project requirements may mean that the recommended modelling practice has now slightly shifted. For example, in healthcare and hospital projects, host and nested Revit family arrangements are often used to control repeating layouts, such as in wet areas and other typical rooms.

Often, many of these nested fixture families are also Shared families, meaning they can be scheduled and accurately counted in Revit schedules.

However, what if a contractor needs access to some of these nested families in their own model? For example, what if a plumbing contractor wants to copy all nested plumbing fixtures into their own model, perhaps to add parameters or generate maintenance schedules for FM?

There are a few different ways to go here, with varying degrees of hackiness and/or gracefulness. An extremely hacky way to go might be to export IFC, open IFC to get each of these nested families as their own instances. Or, you could use Copy/Monitor. When using Batch Copy, each family gets emancipated from its original host family. It certainly should be used with care, as some things don’t work especially well… Like instance parameters aren’t really copied across, and you may end up with some duplicated elements. But for the most part, as a built-in Revit solution, it can do a decent job. I put together a brief workflow on how you might go about this process, and you can download it here.

As usual, test the workflow thoroughly before implementing it, and use at your own risk.

Oh, I wanted to mention yet another way this could be done… with Dynamo. I recently developed a solution that can free nested families for an entire rvt at once, including:

  • create new instances of all nested families of a desired category in correct locations
  • set original element IDs to original and new instances
  • set a parameter to determine if an element was ‘original’ or newly created by the script
  • rotate instances to match original
  • mirror or flip if necessary
  • copy all parameters from original elements to new instances
  • select top level elements for deletion

But that’s a subject for another post… 🙂

This short paper sets out Andy Black‘s personal observations based upon four decades of working in the hospital world. 

Download the full white paper ‘Notes on the design of hospitals and their clinical organisation’, from the Australian HealthCare Week site…

Direct link

A New Approach for the Design of Tomorrow’s Hospital – A2K Technologies Blog

Throughout the design and construction process, the project team used Building Information Modeling (BIM) solutions from Autodesk, including Autodesk Revit Architecture for 3D architectural design and project visualization, Autodesk Navisworks Manage for whole project visualization and coordination, AutoCAD for project documentation, and Autodesk 3ds Max Design for advanced 3D rendering and animation. 
The team also used Navisworks Manage to perform formal clash detection. “For a building with such complex functions as this hospital, there is normally a great deal of rework that needs to be done during construction,” says Fujiki. “But on this project, Autodesk BIM software helped us identify and solve coordination issues during the design process. This helped reduce the amount of expensive rework during construction-improving construction efficiency and quality, which ultimately benefits our client.” 
The project team also used Navisworks to evaluate construction logistics. For example, models of several large construction cranes were added to the Navisworks model to study crane placement. The crane arm was rotated to check the range of the crane and identify placements that involve the least amount of rotation. “The value of the Revit and Navisworks models increased as construction complexity increased,” reflects Hosoda. “Autodesk BIM solutions provided a more thorough grasp of the whole building and had a major impact on the understanding of the workers at the site.”

Read the whole article:
78717-First Experience with BIM Proves Highly Successful for Japanese Designers Collaborating on Complex and Advanced Hospital Design