Mirroring Groups with Room Separators

[Chad Smith]

Attached is an extract from my project which has a typical unit mirrored, and the three Room Separation lines aren't mirroring correctly.
The lines are not locating at the correct elevation which should be at the Level's floor elevation.

Anyone else experienced Groups doing this?

[brenehan]

Hi Chad

How was the level two group placed? When you select the level 1 group it's extents go down to ground level 1. I opened the file, deleted the level 1 group, and then coppied the group floor group up by level 1 using the past by level method. I seemed to work. It does look like there is a glitch there, so do report it to Autodesk.

Brian

[Chad Smith]

It was pasted by level. The issues seems to arise when the room separation lines are added to the group after copying.

[sbrown]

For what its worth, revit recommends NOT to mirror groups. Create one for each orientation. You can usually get away with mirroring but its NOT recommended for these issues. Any inplace family will have very weird results if mirrored and rotated.

[brenehan]

It was pasted by level. The issues seems to arise when the room separation lines are added to the group after copying.

Yes Chad. I've been able to reproduce that.
sbrowns comments do fall in line with what I've also heard. You might be able to get away with it, if they are linked files, which is easy do when they are groups all ready. Personally I'm not a fan of links, due to their limitations.

I do believe that Autodesk do need to solve these kinds of problems with groups. File linking within the same building and discipline does not really come within the bigger idea of BIM.

[twiceroadsfool]

Yeah, i definetely dont understand the correlation completely, but Work Plane based things seem to act odd with mirroring/copying/grouping.

Line Based Families go absolutely bat-*&%$-crazy if i put them in a group and start mirroring the group. They stay on the original workplane, and not the new groups similar workplane, and we end up with stuff out in hyperspace...

[BIMTom]

For what its worth, revit recommends NOT to mirror groups. Create one for each orientation. You can usually get away with mirroring but its NOT recommended for these issues. Any inplace family will have very weird results if mirrored and rotated.

That sounds like more of an argument against in-place families than one against mirroring groups.

I'm curious what you mean by "Revit recommends...." since Revit is a software and can't really recommend anything. Do you mean that Autodesk recommends? Or that Revit just gives warnings once in a while when you do that?