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Joined: Thu, Feb 19, 2015
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Revit 2015, Mechanical fileI have a six-story Dorm with Vertical Fan Coil Units in each room. Typical installation has a pair back-to-back with piping riser between them.I created a model group for each floor (two FCU's, associated piping) and then grouped the six individual floors together as a single stack group.The FCU family is not hosted to the floor nor the wall, the piping is not hosted. Nothing hosted.As the Architects have proceeded to shift walls around, when I sync (or first open file) some of them ungroup.Originally, I had the insertion point for each group correspond to the exterior wall / interior dividing wall intersection. I proceeded to change that and moved it away from the walls, didn't help.I tried moving a stack completely out of the building, shifted in x, y and z direction, sync'ed and didn't experience any ungrouping. This is how I would expect it to behave, I don't understand why the Arch's shifting a wall may cause some ungrouping.I thought that it was finally "safe" two days ago and placed 30-40 of these 2x6 groups, and today opened file and about a dozen of the 2x6 groups ungrouped, along with their 5th and 6th floor subgroups. The Arch's couldn't come up with anything that they might have changed on those floors, or any portion of that building.They did however just shift that entire portion of the building, and two of the previously ungrouped 2x6's had the first floor ungroup. There's still several of the 2x6's that never did ungroup.Thankfully they can't change much more, and I've only lost a fraction, so I think I'll just leave them
any help appreciatedthanks
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Ed
Mech Engineer
MSKTD and Associates |
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Joined: Tue, May 16, 2006
13079 Posts
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Groups can be very prolematic so I am very careful with where and when I use them. They are nice for multiple placements with future project wide modification potential but sometimes the best practice is to ungroup after placement. Even though you are careful about hosted elements, revit still maintain associations.
http://help.autodesk.com/view/RVT/2014/ENU/?guid=GUID-09AD3010-7186-45FA-BC26-C2AD843B6ABE
I don't like vertical grouping of interior elements. I prefer grouping on levels and copy/paste to selected levels. Never include elements in groups that require multiple modifications. Like rooms where you change room finishes. Each individual change requires all of the group instances to update. Change the floor finish and it updates - then change the wall finish and it updates..... In cases where I may want to have items like this for initial placement, I may include them in the original group then I remove just that item from the group but the element remains where the group was placed.
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