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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Installation instructions are located in this discussion,

Discussion Forum

Grasshopper ----> GeomGym IFC--------> Revit 1 Reply

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

Started by Art Agent. Last reply by Jon Mirtschin Apr 19.

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.

local axes area mesh

Hi,I'm trying to draw the isolinee stree from Sap2000 analyses and I need to extract the local axes but I'm struggling with those.Sap2000 creates automatically the local axes but from the table I'm…Continue

Tags: area, shell, axes, Local

Started by Marco Pellegrino Feb 29.

How is the Property-set?

Hi JonI want to create property-set.I checked each architectural object common property. (for example IfcWall common...)I want to new property set structure such as regulation code check using…Continue

Tags: Set, Property

Started by lee ji yonh Feb 28.

IFC text tree viewer 1 Reply

Hi Jon,Related to our Github discussionI'm probably missing something, but is there a reason that…Continue

Started by Ryan Schultz. Last reply by Jon Mirtschin Feb 14.

Problem to create IfcColumn 1 Reply

Hi Jon,I have a problem to create a IfcColumn. I don't know why to have this error message.the error message is "overcast is not columntype". How do I solve a this problem?Help me Please Jon!I…Continue

Tags: ColumnType, IFC, Column

Started by lee ji yonh. Last reply by Jon Mirtschin Feb 6.

Difference Between "ssiBeam" & "ggBeam" and Their Locations 2 Replies

Hi everyone,I'm trying to transfer some data from grasshopper to Tekla. However when I use the "ggBeam" component and bake it to Tekla. The location of transferred data is a lot more different than…Continue

Started by Ertunç Hünkar. Last reply by Ertunç Hünkar Jan 18.

Comment Wall


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

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

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 


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