Reference Plane options for Roofs

[Laszlo Nagy]

Slabs now have Reference Plane, which can be set to Top, Bottom, Core Top, Core Bottom. Additionally, we have commands to modify the reference plane location of an existing Slab.

I wish to have these same options available for Roofs as well.
One common scenario where this would be helpful can be seen in the following thread:

https://community.graphisoft.com/t5/Design-forum/Roof-Wall-Connection/td-p/223445?t=47470

[Aaron Bourgoin]

This feature should be added if for no other reason than it reinforces the long-held Graphisoft ArchiCAD ethos of all tools working the same way.

Similarly, slabs and roofs could be interchangeable while walls, beams and columns could inherit x:y sloping parameters.

This shouldn't be an incremental change stretched out to the release of ArchiCAD 23.

worksheet and detail windows are the same thing with different names. Why isn't that the case with the building 'primitives' as well?

[Aaron Bourgoin]

Roof Planes also need to follow the same rules for Priority Based Connections as Slabs. I've recently discovered this is not the case.

[Eduardo Rolon]

There is a reason that Roofs do not follow PBC's like Slabs but I can't find the reference. Because of that they included the following command:

Merge Elements: Roofs, Shells, Morphs
Use the Connect > Merge Elements command to enable priority‐based intersections among any number of Roof/Shell/Morphs and other elements. (At least one of the merged elements must be a Roof, Morph or Shell.)
Note: Alternatively, you can use Roofs and Shells to trim other elements (not just merge them): this is another way to enable priority‐based connections for Roofs/Shells, as well as physically trimming the target element.

[Barry Kelly]

Not only should we be able to set the pivot line (reference plane) to the top, bottom, core, etc., but the height for the multi-plane geometry (additional pivot lines) should be in the same plane.

Currently we have the main pivot line on the bottom surface but the heights for addition levels are measure to the top surface of the roof.
If I am trying to pitch that roof over a wall I know the height to the underside of the roof - not the top surface that will change depending on the roof thickness and pitches.

Barry.

 

[DGSketcher]

I could do with this wish right now. Working on a project where I am adding new roof planes; whenever a roof thickness is amended I then have to spend ages adjusting the new roofs up or down to realign the top surface.

[thesleepofreason]

This is an essential function and straight forward wish!

[rodut1112]

August 2022, Archicad 25 still doesn`t have this implemented....Should we wait another 8 years?

Cause i assume AC 26 won`t have this "feature " either.

[snow]

Hello all,

We need such option...

...for Roofs as well... so urgently

To do correct construction in case of different pitches...with only and always the pivot for pitch on the lower plane... sometimes causes a lot of auxiliary lines etc.

Even mostly, we need the pivot and reference height on the upper plane.

Changes of thickness are mostly on the underside.

[snow]

meanwhile...

Remembered, working in section etc., that by pitching with the mouse at the upper plane, the pivot seems to change upwards.

At least something... for now... 🤔

...and something else (I won't rise a separate 'wish' for this):

It was helpful to see the pivot in section/elevation projections.

[Julio C Freitas]

It makes sense, especially since we don't have a dedicated tool for ramps. I imagine most use the roof tool to model ramps. And the reference plane underneath doesn't make much sense on this occasion, as you said, for any changes in thickness.