can archicad control wall heights to changing levels (revit)

[Anonymous]

I am also a very new convert to archicad.
But i have used revit for the last 3 years.
I wanted to know.
When i create two levels and make a wall.
can i attach this wall to the two levels, so later if the levels change, the walls will automatically follow?

Thanks.
Ian

[Erika Epstein]

In archicad you do this by setting a relationship between the wall and floors using Solid Element Operations (SEO). There are some tutorials on this that graphisoft posted on youtube.

In the 3D window select the wall and in the SEO settings box
click on the 'Get Target Elements' to set this as the 'target'.

Select the floors, and then set them as the 'operators by clicking on the 'Get Operator elements' button.

3. select 'Subtraction with downwards extrusion' for the operation. This will trim make the floors trim the wall that extends below the floor slab. If the floors will might be lowered, you can extend the bottom of the wall as the objects must overlap in space for the SEO to work.

4. Click the Execute button.

Unlike trimming with a roof which creates a fixed trim, this is a dynamic relationship. All elements must stay in the file for the trim to be in effect. In your situation the walls and floors are part of your model so they will stay in the file. If you wanted to use SEO to create a trim with an element that is not to be seen as part of your building, then you can create a layer for these SEO operators so they remain hidden but are still in the file.

[sinceV6]

At the risk of criticism, I must say that the answer is "No, you can't". The SEO method Erika mentions is nothing but a workaround and floor-to-floor-wall-height-option is something that has been long wished for; because in the end, while SEO might cut the extra parts of walls (or any other elements) and is a dynamic relationship, you still have manually adjust the wall's height so it overlaps and gets cut, and you have to keep an eye on floor display options as well.
The question is: if the wall-end tool can adapt to a wall height automatically, and you can get automatic floor-to-floor height coded in GDL using REQUEST, why can't there be a simple option in wall settings that says: WALL HEIGHT: manual / to next floor
Or am I missing something here?
Best regards.

[Anonymous]

On my ignorance about Archicad i would say that that feature doesn't exist in AC, and I hate. If I move the wall the atatched wall doesn't move with it, or if I change the story heights, all my walls are short.

Any workaround it appreciated.

[TMA_80]

In short , there is no identical option in ArchiCAD such the one that is in Revit.

the nearest you could have is the simple add-on _ story height_ :

http://www.simpleaddon.com/Eng/PM_StoryHeight.html

IMHO, SEO will never replace the revit option simplicity (as explained by Since-V6)....not to mention the SEO in plan issue....

I hope that GS will give more serious solution to this request.

[sinceV6]

Fast, dirty, ugly, and simple proof its easy in GDL... please make it standard in wall settings.

place it in several floors and adjust floor height. should update. for ac13+, just be careful with home story setting for the object.

*EDIT*
removed attachment. scroll down to newer version

[Erika Epstein]

Archicad is not Revit. Using AC we create relationships when needed using SEO.

[sinceV6]

Indeed... archicad is not revit... I love it that way. But SEO will only get you that far. You still can't establish the other kind of relationships: the dimensional ones, where you need to keep an object to a certain distance of another one, or to keep it parallel, perpendicular, at a specific angle or constrained to the top level of a certain slab.

The fact that you need to model a wall with a 4m height for a 3m floor height and SEO away the top 1m just in case the floor height changes (and within that 1m one expects) is not really "BIM-correct", and is not really an intelligent relationship between parameters.

Best regards.

[Laura Yanoviak]

Has anyone used the new Trim to Roof/Shell element connection in AC15? I'm sure this same functionality could be added for slabs; however, it doesn't sound like it's much different than SEOs -- that is, it will trim but not extend attached walls.

[Anonymous]

TMA_80 wrote:
In short , there is no identical option in ArchiCAD such the one that is in Revit.

the nearest you could have is the simple add-on _ story height_ :

http://www.simpleaddon.com/Eng/PM_StoryHeight.html

IMHO, SEO will never replace the revit option simplicity (as explained by Since-V6)....not to mention the SEO in plan issue....

I hope that GS will give more serious solution to this request.

In a non related answer, thanks for the simple add-on website, it's great!