I can't find anything out there that discusses this, so I may have a unique installation failure or something. Here's what's happening. All wall based lighting fixtures bury themselves 3" into the wall.
This problem is new today, never happened before and only seems to be happening with wall based lighting fixtures. Face based fixtures seem to be ok. It happens in all files, old and new and with any type of wall and any type of wall based light fixture. The amount that the fixture is buried in the wall doesn't seem to correlate with any reference planes in the family or layers within the wall - simple walls with no layers have the same problem - but is consistently 3" with every family. I'm attaching a copy of the file and a screen shot of the situation to see if if maybe it's specific to my machine.
Your light is not constrained to the face of the host wall in the family so when the wall thickness changed, the light is buried in or floating out of the wall.
Since you light family is created with pieces, it is difficult to constrain every piece, so I would create it as a non-host family, nest it in the wall based family so that you only need to constrain once.
If you don't want to recreate it from scratch, convert the wall based family to face based using this tutorial: https://knowledge.autodesk.com/support/revit/learn-explore/caas/sfdcarticles/sfdcarticles/How-to-cha...
Then use the face based family in the project for more flexibility (be able to place on any surfaces, not just walls). Or nested it in a wall based family, constrain, and load the wall based family in project (I would not do this).
How could this have spontaneously happened to all these fixtures in my library (without opening them)? I've used these particular lights for a long time, never with this problem. I know there's probably no answer for that... Also, this is something about existing families that I've never understood... and I'm sure it's answered in a hundred other threads, but clicking on all the elements in the family (and others that do similar things) there's no locks or anchors that I can find to show which things are constrained to what. Toggling on the Reveal Constraints and then selecting objects says they are assigned (or not) to a work plane, but not which one... ?? I don't expect anyone to tell me how to build families here, but maybe if you're aware of a particular thread someplace else that addresses this might point me in the right direction, and "teach me how to catch a fish" so to speak
Doesn't this mean that the mounting plate is constrained to the face of the wall? Isn't that what the profile plane is? I'm sorry I'm such a ludite with this... just trying to figure it out. Thanks for being patient.
@Base12 wrote:
How could this have spontaneously happened to all these fixtures in my library (without opening them)? I've used these particular lights for a long time, never with this problem. I know there's probably no answer for that... Also, this is something about existing families that I've never understood... and I'm sure it's answered in a hundred other threads, but clicking on all the elements in the family (and others that do similar things) there's no locks or anchors that I can find to show which things are constrained to what. Toggling on the Reveal Constraints and then selecting objects says they are assigned (or not) to a work plane, but not which one... ?? I don't expect anyone to tell me how to build families here, but maybe if you're aware of a particular thread someplace else that addresses this might point me in the right direction, and "teach me how to catch a fish" so to speak
This family only works if the wall is 6" thick, period. If you says it works for other wall thicknesses then I am very interested in seeing it for myself.
Speaking of the right direction, I have already given you:
- a direction for creating it from scratch: create it as a separate family, nest in the wall based family and constrain.
- a direction to fix what you already built: convert to face based and use it.
Both are "how to fish", not "giving fish". I could fix the family but it would be useless for you since I only have 2022, not 2021.
#1 is easy to get. Copy all pieces into a new family and nested back to a wall based family. It works fine. Attached is r22.
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