Hi All,
I was just doing a small test and trying to figure out if it’s possible to extract volumes from floors and toposurface structural layers.
So far I’ve found it doesn’t record the volumes as a built-in output, and I can’t seem to do much with the decompose component structure node but extract materials. So I assume I have to somehow find how to get volumes from materials. I can’t find that yet.
Has anyone tried this before?
Thanks
Scott
Ah HA! I was close but not close enough. I’ll give it a go now thanks @Japhy
Hey @Japhy ,
I just tried this on a floor, worked well. Then I tried it on a toposolid and it didn’t work at all. I assumed they would act the same but I guess not.
Scott
This method got me some volume and area numbers. I assume they are correct.
Would also be nice to get brep solids… which is probably why the other method didn’t work because of a site in a mesh… I assume.
My example was a toposolid in Revit 2025. Are there cuts and fills? A small example would be helpful.
https://help.autodesk.com/view/RVT/2025/ENU/?guid=GUID-B7B5057A-46DC-4BD6-8ECB-BFFA220D2B1D
I’m using 2024 as well, it’s just a toposolid, shaped originally by a surface, but not linked to that now. It’s just a test file I have to check if ideas work.
Tested a flat site and it worked.
Then I modified it and it fails
So, my guess is it’s a brep when it’s flat, and then it becomes a mesh when it’s modified. So the component doesn’t recognize the mesh… I assume.
Is that logical?
That what i was thinking too, in the Revit UI can you create parts from the 3D topo?
Hey @Japhy
Looks like a solution, wasn’t exactly what I was looking for but it works if I need the surface. It exports the entire soil layer as one, which would still be useful as that’s the variable layer and maybe I’d have a tunnel or basement in there and that should export around that.
Thanks for your support!
