algorithmic modeling for Rhino


Geometry Gym BIM

BIM (Building Information Modeling) enhancements for Rhino and Grasshopper, import/export to Revit, Digital Project, Bentley and Archicad amongst others.  Also Structure modeling (including analytic) and Computational Geometry Tools such as mesh relaxation/inflation and tessellation tools.

Members: 1588
Latest Activity: Aug 8


Installation instructions are located in this discussion,

Discussion Forum

Red dot/ point on the curve: what does it mean actually?

Dear all and Jon,Does anyone have same problem as mine, even though it might be a stupid question or situation i am sinking in..My question is: what does the red on the line mean? i do wanna…Continue

Started by Cyrus Gil Aug 8.

Exporting Karamba to IFC file 1 Reply

Hi Guys! I am new to geometry gym and I am having some troubles exporting my karamba model to IFC. the error message I get is Solution Exception: Non - static method requires a target.I have no idea…Continue

Started by Camilla Rozario. Last reply by foodove Aug 5.

Solver Example? 3 Replies

Hi guys and Jon,I am currently doing a Dome structure in plug-in Geometry Gym in GH. I would like to able to do the analysis in Geometry Gym, and these results can be showed in GSA. But i found there…Continue

Started by Cyrus Gil. Last reply by Cyrus Gil Aug 2.

Robot error message importing IFC from Karamba 1 Reply

Dear All, I'm new to this forum so, hello.I'm having issues exporting my model from Karamba to Robot. IFC4 is created but Robot dislpays an error " contains an incorrect schema".any ideas?many…Continue

Started by Pep Tornabell. Last reply by Jon Mirtschin Jul 13.

Measuring units Karamba to IFC 2 Replies

Hi,I have a question about Karamba. I want to use Karamba and make IFC files from it after the structure is done, but i know Karamba measures in meters while a program like Tekla measures in…Continue

Started by Giorgio. Last reply by Giorgio Jul 11.

Not able to bake model to GSA 9 1 Reply

Hi Jon,Before I used GSA UNIPACK 8.x and Rhino 5, ggGSA worked fine.Recently I moved to a win10 pc, upgraded to Rhino 6, and also latest GSA 9 installed.I opened the old file which was good before…Continue

Started by Jing. Last reply by Jing Jul 4.

HRESULT: 0x80131044 1 Reply

Hi Jon, I have a problem with the last build for RH_5. ggRhino5IFC v1.6.59.msi (25th May 2018)After installation when I'm hovering over parameters in GH to check what's inside I got an error:…Continue

Started by Konrad Zaremba. Last reply by Jon Mirtschin Jul 2.

From Karamba to Tekla 2 Replies

Hi,I have a question if its possible to convert a Grasshopper Karamba model to Tekla with all the beams and colums included? The Tekla plugin can only make a beam from a line with manual input, but i…Continue

Started by Giorgio. Last reply by Giorgio Jun 5.

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You need to be a member of Geometry Gym BIM to add comments!

Comment by Derk Bos on March 20, 2016 at 3:06pm

Hi Jon,

I'm trying to do a non lineair analysis on a tensegrity structure in GeomGym. For some reason, however, I don't obtain any results.

The ggGSASolver component doesn't give any error message, but for some reason the analysis doesn't run in GSA. When I do the analysis manually in GSA it does work however. 

Do you have an idea what the problem could be?

Kind regards,


Comment by Jon Mirtschin on February 28, 2016 at 2:53am

Is this error in v18 plugin?  Can you start a discussion thread or post to this one and attached your model (or a sample of it).



Comment by Qi WU on February 26, 2016 at 2:14pm

Hi Clara, I don't see a profile library, that's way I am using a panel.

Here is error: 1. Solution exception:Object reference not set to an instance of an object.

I don't think it's a input issue, cz it's a solution exception.

Comment by ClaraML on February 26, 2016 at 10:38am
What's the error in the red globe? Does it work if you use the profile library instead of a panel for set the profile?
Comment by Qi WU on February 26, 2016 at 10:26am

Hi Jon, For the latest version of ggSAP, the ggSAPCreateFrameProp component is not working properly. Is that a bug? It was working fine in your v17.1.1.

Comment by ClaraML on February 17, 2016 at 2:04am

I'm having a problem with GG and SAP2000. I'm using SAP2000 18, not 17. And I've detected at least one component (the library material) that search for information in the SAP17 route. Is there any way for changing that route and make the component search in the correct route? If not, I can duplicate the SAP18 folder and rename it like SAP17, so the component could find the information. Do you think it will work?

Comment by lee ji yonh on February 2, 2016 at 8:52pm

Hi Jon,

Currently i have a problem to create a column. I don't know what i should do. how do you make a logic? Now this problem's message is "overcast will not be column type"

Kind Regard, 

Jiyong Lee

Comment by Ghazal Javidan on January 13, 2016 at 12:31am

Hi Jon

I have not got any reply for my Geometry gym license request email yet. would you please response to that? tn

Comment by Zhengyu Xue on March 22, 2015 at 4:22am

Hi, Jon,

Do you have any related videos about how to do structural analysis about shell structures?

Kind Regards,

Xue Zhengyu 

Comment by Jon Mirtschin on February 17, 2015 at 1:31pm

Hi Tim,

For GSA, you need to manually start GSA application (and close the default opening dialog) prior to any baking.  Else when a plugin initiates contact, the application is started as a background service (that the user can't access).  I can't control this, but the background service is useful for faster performance (when say running galapagos) and not having to manually close dialogs.  The Oasys webinar below has some explanation on this.

Hope it helps.


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