Rectangular Opening doesn't cut its host

[KarenLBR]

Hello.

I'm using Revit 2020 Full, trying to place a rectangular opening in a new wall and I'm getting the 'Rectangular opening doesn't cut its host.

The wall in question is a thermal lining wall (insulation and render) placed in front of an existing wall (i.e. in different phases). The opening I want to place is to create an opening in the new wall where the window is (note that in the attached image I have offset for clarity). I have managed this for most of the existing windows I do not want to block, but there is one first floor window I cannot do.

• I have tried in plan view and elevation, and whilst the opening is drawn, it isn't visible and I get the error message.
• When I try it in section, I can select the wall but I get a black not possible symbol so I cannot place the opening at all.
• I have checked the phasing of the wall and the opening and they are both 'new construction, no demolition'.
• I have successfully created window openings in the same wall at ground floor level.
• I cannot change the level or offsets of the opening until I have drawn it - and for some reason (even though I am in the FF plan) it chooses Ground Floor. 
• Once drawn I can edit the offsets and level, but this doesn't appear to help me.

Does anyone have any suggestions?

Many thanks!

[hmunsell]

is the thermal lining wall a "Wall" or was it constructed using another tool.

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@KarenLBR wrote:

(note that in the attached image I have offset for clarity).

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no picture in the link....

[KarenLBR]

The thermal lining is a wall - with the insulation between the core layers as the structural aspect (even though it isn't set to being a structural function).

Oh, I thought I'd attached the image! Oops, try again...

[hmunsell]

Hmmmmm, stacked walls can some times be finicky. if you place a stand alone wall that is JUST the part of the stacked wall your putting an opening thru, can you place an opening in it? trying to narrow down if it is the stacked wall or the wall type.

can you post a RVT file with the wall in it? 

[barthbradley]

Does it have to be a Rectangular Wall Opening? There are other ways to approach. 

Post the file. Let's take a look at it.  Maybe we can offer an explanation and/or an alternative.  

[KarenLBR]

The wall is not s tacked wall - it is a basic wall standing in front of another wall (which is stacked - but i'm not trying to cut this one). 🙁

[KarenLBR]

@barthbradley  I'm only trying to use a rectangular opening because that was what I thought to be the most straightforward way of cutting a rectangular hole in my wall... and it has worked everywhere else I've tried to do it!

In the attached model I have drawn a purple model line around the two walls where I have used this principle - i.e. basic wall alongside existing stacked wall with openings cut in the basic wall to correlate with windows - so that you can easily located them on plan. You will see on the North west elevation (FF plan, W.F.11)  where I would like the opening to be - because the window is tagged but not visible!

Would 'cutting the hole' by changing the wall profile work? 

Hmmm, for some reason I cannot upload my file - which according to my system is only 34mB!!! I'll keep trying and be with you shortly

[barthbradley]

 Sometime the Forum gets buggy and will only accept an file attachment if it's ZIPPED (e.g. Compressed).  ZIP it up through Windows (not WinZip please) and try attaching it again.   

[KarenLBR]

Trying again to upload a zip - it didn't work last night, so I' trying once more...

[ceyhunyuzuak]

I know it's way too late but the reason was probably because the wall's top constraint was unconnected also wall was attached to the roof or something else above. On the other hand its unconnected height was too low, lower than where opening should be, therefore Revit takes that particular wall element to be nonexistent where opening is. 

solution is: set the unconnected height above the top offset of the opening.

[00130516]

I know it is way too late, but hoping it helps some other folks. So, I had the same warning, I had 2 walls with different heights, one next to the other, what happened is that when putting the opening it took the tallest wall as reference, then I moved it toward the other. When this happens, you'll see in the 3d the opening's height is taller than the wall you are trying to cut out. To solve this issue, I put the opening right in the middle of the wall I actually was trying to cut, then drag it to the right place. 

[jeremyfrost]

This solution solved my instance of this issue. Thanks!