how to demolish only a component of a wall?

[robert6W9EQ]

I've run in to this several times on a remodel where I have an exterior 2x4 or 2x6 frame wall with brick.  The frame component will remain, but the brick ledge gets removed in the area of the new remodel addition.  Additionally the finished model would have gyp added to the face of the core of that wall because it is now an interior wall on both sides. 

ways i've tried to solve:  create a model in place component as a void form in new construction that covers only the brick and airspace portion of the wall. and subtract it.  then create gyp only wall in new construction. - this is cumbersome and completely unintuitive.  Any better way?

[ToanDN]

Create Parts from the wall and Override a part layer to be demolished.

Capture1.PNGCapture.PNG

[robert6W9EQ]

Could you please expand upon that? How do I override a part layer? You
are not referring to phasing (demolished) are you? Because that option
isn't allowed if I create parts from my wall. I'm completely confused by
the create parts tool. Once I create parts it seems I can do very little
with it.

[cbcarch]

You can also model separate walls ( gyp bd only, brick only, etc.) and demo them.

Place them on Existing Phase, demo in New Construction Phase, etc.

Parts also can work as Toan suggests--but it's a bit tricky, especially if you are working in a large team, then everyone must fully understand how to

manage/manipulate Parts and View settings, etc.

[ToanDN · Accepted solution]

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@robert6W9EQ wrote:
Could you please expand upon that? How do I override a part layer? You
are not referring to phasing (demolished) are you? Because that option
isn't allowed if I create parts from my wall. I'm completely confused by
the create parts tool. Once I create parts it seems I can do very little
with it.

---

Did you see the first screenshot where I circled the the checkboxes for Parts phasing?  Steps:

- Select compound wall(s) and Create Parts from the ribbon tool.  Revit will create each layer as one Part (you can choose layers to exclude from Parts if you need to).

- Select Part(s) and uncheck the box Phase Demolished by Original, then pick a Phase when you want to demolish the layer.

- If you want demolish a portion of the layer then you can use Split Parts tool from the Parts menu and subdivide Parts into smaller pieces

With that said, most folks can find this workflow too cumbersome and create different walls for different layers and join them.  It works well too.

[robert6W9EQ]

My apology, I saw your text answer via email and did not see the screen shots you posted until I logged back in here.  Thank you for the clear answer to this.  It is a bit cumbersome but it works.

[clifford_md]

Thank you, this just helped me out.

[marcelloarqurb]

I know it has been a while, but your comment has been very helpful. I would like to expand on that and ask for your opinion about changing the wall finish. I was able to create separate parts and demolish the tile on the wall, but what would be the recommended method to add another finish in the construction phase? For example, adding another part with a different material over the one I demolished.

The first image represents the finish I demolished, and the second one shows a small wall I added with the same thickness as the removed material. Is there a way to merge them into one element so that, for example, I can place a door that cuts through both? I'm trying to find the most accurate method to get the correct build and demolish values.

@ToanDN 

Edit: I used the join element with both walls and the door functioned ok. Is there any other method?

[ToanDN]

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@marcelloarqurb wrote:

I know it has been a while, but your comment has been very helpful. I would like to expand on that and ask for your opinion about changing the wall finish. I was able to create separate parts and demolish the tile on the wall, but what would be the recommended method to add another finish in the construction phase? For example, adding another part with a different material over the one I demolished.

The first image represents the finish I demolished, and the second one shows a small wall I added with the same thickness as the removed material. Is there a way to merge them into one element so that, for example, I can place a door that cuts through both? I'm trying to find the most accurate method to get the correct build and demolish values.

@ToanDN 

Edit: I used the join element with both walls and the door functioned ok. Is there any other method?

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I would do the same.

[marcelloarqurb]

Thank you very much. Your previous comment here helped a ton.

[Lars_Jeppesen]

Old thread but thought I would chime in - the Parts function is only view specific and as such is quite useless for 3D projects.

Our typical scenario of working with existing building is that we need a soft strip phase to perhaps remove internal linings or external cladding, with the structural elements to remain.  'Parts' is great for this as you just need to create two materials in said walls and play with the phasing of each...however again, it's view specific only.

As far as I can see, our solutions are to:

1) rebuild said walls 'layering' them using separate walls and demolishing one of the walls (not ideal as we now have to manually amend an official survey file) - i.e. adds risk and a lot of additional time and cost to us,

2) model 'model-in-place' voids cutting out the 'layers' we don't want to see, and thereby introducing a demolition phase. Again not ideal, as I personally try to minimise the use of MIP work. This too is not ideal as any door/window with framing will not cut itself back...

Anyway, thought I'd add my 2c....and would love to hear others' thoughts and their solutions to this same scenario.

[RDAOU]

@Lars_Jeppesen 

What you stated is not accurate. Parts are not view-specific. When you convert a component to Parts, it changes its state at the 3D model level. Whether the user chooses to display parts, the original assembly or both is simply a preference.  When you phase them, they are phased in the model and not the view. Every action or modification you apply to them is reflected in the entire model. 

When one speaks of View specifics in revit one would say Visibility graphics options, View filters, Detail components and annotations but definitly not parts.

Nonetheless, the workflow of delving into the details and modeling each layer or set of layers as individual components then using them in groups or assemblies is quite a common practice too. And this approach applies not only to walls but to all layered structural elements. Both workflows can be used simultaniously in a model there is nothing wrong with that

[Lars_Jeppesen]

Hi RDAOU,

Unless I'm misunderstanding what you're saying, I think for our purposes, the 'parts' function IS view specific. If I exploded a wall in one view, those parts (and the splitting of the wall) does not carry over to other views (apologies if my technical definition of 'view specifics' is not correct but that just semantics in this conversation), nor are you able to add information to the parts (like moving them to separate phases)..

Since my last email, we did figure out a creative way to get this to work though - I created a 'door' which has instance parameters for controlling the width, height and depth of the cut in the wall. This way you can host it on a wall, pull it laterally and vertically, as well as the depth, resulting in a neat 'cut' in the wall of say 50mm, which also nicely shows up as demolished since it's able to phase correctly.  Hope that can help others' circumvent this Revit short coming.