I’ve been running into issues trying to extract slab geometry. As you can see in the image, the slab definitely has geometry to it. However when I run the Element.Geometry (or Element.Solid) node, I get an error saying “Warning: Element.Geometry operation failed. value cannot be null. parameter name…

Hi Dennis, Can you drop here your dummy rvt file.

Hi Kulkul Here is a file with just this floor slab. I noticed something interesting in the process of making this file that may or may not be contributing. The first picture shows the slab in my project file and the second is the slab in a file by itself. It seems that in my project file, the slab …

Hi @Dennis_Goff - this error means that Dynamo’s surface conversion is failing on this slab for some reason, I’m guessing some of those interior loops are not built how we are anticipating or the slab is very slightly non planar or something else interesting. We’ll need to use file a bug for this s…

[image] Dennis_Goff: In the file by itself, the Element.Geometry node actually works Hi Dennis, Correct me if i am wrong your issue is when the slab is being cut by some objects your not able to get geometry? [image]

Yea, at least that is my current working theory. Since the element.geometry node works fine in the file by itself with nothing cutting it I would guess that that has something to do with it. Perhaps there is something irregular about the cutting elements in my project file

@Zach_Kron , This geometry doesn’t have any interior opening, yet the operation for element.geometry seems also failed? This is Dynamo 1.2 [image] pavilion.rfa (416 KB)

[image] Arthur_Gunawan: This geometry doesn’t have any interior opening, yet the operation for element.geometry seems also failed? Elliptical interior openings are just one of the known reasons that cause Element.Geometry to fail. It fails otherwise too. I sometimes manage to get it to work …

my guess here is a conical face :slight_smile: or wacky edge loop, thanks for the .rfa.

I’m bumping this topic. Having the same issue Any updates on the cause? [image]

Element.Geometry operation failed

Zach_Kron August 8, 2016, 7:12pm 9

Looks like Element.Geometry is failing if you have an interior opening on a slab with an elliptical sketch. Urgg. Sorry, we’ll get on it.

Element.Solids operation failed with complex elements

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Element.Geometry operation failed

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