Revit Switchback in Navisworks 2012

I wanted to create a written post for this topic since I had posted a video regarding the new Switchback functionality in the Revit products.  Here is the video link; http://bit.ly/tF5SRf.  This is found on our 2012 Learning Videos page which can be accessed from the Media pull down on our website.

With the Revit 2012 products we now have a new add-in supporting workflows with Navisworks Manage.  Here, we see selections to create a Navisworks cache file (NWC) and the new setting of  Navisworks Switchback.

This tool functionality previously existed only with AutoCAD and Microstation-based products.  Switchback allows us to work side-by-side using Navisworks Manage and an authoring application like Revit or AutoCAD MEP, to open, navigate to a component in the model, make alterations, save a new export, and refresh the review model in Navisworks to update the review process.  This can happen from two places; a right-click selection menu from a model element, or using the Switchback button inside of the Clash Detective tool.

This process requires certain steps be followed:

  1. Both Navisworks and the authoring application be open.
  2. The Navisworks fileset created from the source file, i.e., nwc file, be open in Navisworks.  The project file is not required to be open in Revit or AutoCAD.
  3. The Switchback funtionality is enabled in the authoring application before performing the function, i.e., type NWLOAD on the AutoCAD command line or select the Navisworks Switchback button from the Add-Ins tab in Revit.

Also of importance is one more selection from the Options dialog inside Navisworks.  The refresh process will not work with this selection disabled, and you may find it is so in your default installation.  In the Navisworks Options dialog, select Performance, beneath Model.  Be sure to checkmark the box for “Close NWC/NWD files on load”.  This allows the authoring application to export a new file and overwrite the previous one, allowing the Refresh button to work in Navisworks.  If not, you will receive a message saying unable to write the file.

With many users taking advantage of Autodesk’s new Design Suite offerings, working side-by-side with multiple applications provides advantages to design and contruction entities to better insure designs are coordinated before and during construction processes.

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