Round Tripping and IPD – 3D Design Review

Round Tripping is a topic of interest but what does it mean? What are the benefits and why would one even consider it in terms of production efficiency?

Round Tripping in a sense is the generating of information in one software platform, feeding it out into another and bringing it back in again. – And so on.

Some 3D modelling software packages don’t deal with this all that well and others can.

For a long time now I have been obsessed with coming up with a means of  being able to deliver a 3D model to an Engineer that was worthy to be used as a 3D design review tool.

A few weeks after the Object Libraries presentation, which I have posted about below, we had the developers come to our office for a meeting to discuss what they are working on and also to use it as an opportunity to show them the 3D review process JR has developed. Its based on using Navisworks as the review tool but we have taken it a step further with the added functionality of:

  • Linking PDFs of drawings to Assemblies. – Open the PDF associated with the assembly in the model.
  • Using the GUID as a means of making the Round Trip work
  • Using the Navisworks comments function to add review comments to parts – linked to GUID
  • Using the Navisworks compare models to compare different versions of the model to easily identify parts with comments.

One of the great benefits with this system is that we developed the Tekla model from the Engineer’s Revit model’s IFC export, whilst a Round Trip wasn’t possible in Revit direct we were able to use NAvisworks as a means for the review. We then imported information back into the Tekla model and by the GUID remaining constant through out the process and were able to select Tekla parts in the model associated with the parts commented on. Doing this makes it much easier to manage review comments when its conducted in the Detailing software package.

We have been involved in projects in the past where Navisworks has been used as a means for design review and coordination, however in these instances tags in views  have been used as a means to remark on something. The problem with this system is it has no direct relationship to a part and it is very difficult to work with and very slow.

Below is an extract of the Power Point presentation used to explain the process. The presentation had a series of live demonstrations which explained the process in greater detail, if you want a copy of the files to have a look at just let me know and ill try and send them.




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