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.

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Latest Activity: 16 hours ago


Installation instructions are located in this discussion,

Discussion Forum

Voronoi and geometry gym 1 Reply

Hi Jon, I'm working with the voronoi function in grasshopper at this moment, but I want to make this part of the structure and optimalization i'm going to do. The idea is to put the voronoi between…Continue

Started by Anne Holthaus. Last reply by Jon Mirtschin on Thursday.

uniform loads 3 Replies

Hi Jon,I just started working with geometry gym and made a construction where I need a uniform load on the roof and on the beams, so the load will be equally divided over the leaf like structure I…Continue

Started by Anne Holthaus. Last reply by Jon Mirtschin May 16.

Grasshopper ----> GeomGym IFC--------> Revit 5 Replies

Hi AllI sow these video by Jon but at ( I…Continue

Started by Art Agent. Last reply by Art Agent May 16.

IFC Python question 1 Reply

Hi Jon I see your post about IFC script(python).At first, thank you about sharing your research.I see your IFC python sample file.But when I opened IFC python file, i happened error message.Suddenly…Continue

Tags: Script, IFC, python

Started by lee ji yonh. Last reply by Jon Mirtschin May 9.

How do i make Property-Sets's logic in geogymBIM?

Hi JonIt is important to use attribute information in BIM.Especially, Property-set information is very useful in BIM.I checked IFC component about property-set in GeogymBIM.But I don't know how do i…Continue

Started by lee ji yonh May 9.

Grasshopper3d Geodesic Dome Structure Generator (GGDSG) Geometry Gym 02.05.12 8 Replies

Hi all,Here is my Grasshopper3d Geodesic Dome Structure Generator (GGDSG) With Geometry Gym .gh File. …Continue

Tags: Structure, Geometry, Gym, Grasshopper, Geodesic

Started by Paul Goodship. Last reply by Patricio Rabus May 5.

SAP2000 15 Replies

Here's a thread for questions and suggestions specific to the Geometry Gym addon to interact with SAP2000 Structural Analysis.  Note you can filter my blog for posts/examples specific to SAP 2000…Continue

Tags: Analysis, Structural, Gym, Geometry, SAP2000

Started by Jon Mirtschin. Last reply by Wilbur Wong Mar 15.

Comment Wall


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

Comment by lee ji yonh on May 9, 2016 at 1:14am

Hi Jon 

I see your post about IFC script(python).

At first, thank you about sharing your research.

I see your IFC python sample file.

But when I opened IFC python file, i happened error message.

Suddenly i wonder this cause.

Also, i am likely to studying IFC python script.

so I request you why this problem happened.

and how do i script correct for operating this component?

Comment by Jon Mirtschin on March 21, 2016 at 3:10am

Hi Derk,

If you add an analysis case, then you will get results.

I've emailed you the definition.



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


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