Forums >> Revit Building >> Technical Support >> Working with Model Groups

ksymons

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Joined: Mon, Nov 19, 2007
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Currently using Revit Arch 2012 and our project model groups just started acting out.  They are residential units with casework, furniture, and plumbing fixtures. Our groups only contain the building elements and families for the interior portion of the unit. In other words - no exterior, corridor, or unit separation walls in the group. We cannot copy or mirror the model groups without getting an error message prompting to Fix Groups.

Could it be because a number of wall-hosted families are adjacent to the corridor wall not part of the model group? I thought Revit had the capability of having those family elements "rehost" to any wall outside of the group? Or the mirroring?  Both?  Is my best solution for now to include the perimeter walls (to host the necessary families) and exclude them where overlapped?  And to have a separate group for mirrored instances?

I've browsed the forums here and at AUGI and it appears there are a number of work-arounds I need to be aware of when working with Model Groups.  A lot of them are with previous versions and may be outdated so I was hoping to start some kind of discussion here on what are the latest limitations and work-arounds when working with Model Groups.

Thank you!

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

Several years ago, I found that mirroring groups often leads to problems so I try not to do that.  Instead, I create left and right hand groups. 

Hosted elements that don't include the host are sometimes flaky.  There has to be a new host there in the new location.... and it wants to be in the right place.  << So the problem is usually placement of the group.  BTW - That host can't be in a design option (face based might work with DO host).

Also - make sure exactly what is in your group.  Sometimes people include objects that were hidden when they made their selection... ALWAYS check out what you have included using the filter and watch the counts.

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