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: 1399
Latest Activity: Mar 26


Installation instructions are located in this discussion,

Discussion Forum

Connection With SAP2000 and Orthotropic Materials 30 Replies

Hello All,I am new to Geometry Gym and honestly not too familiar with how it works.  I was searching around online and can't seem to find any kind of tutorial on its use in conjunction with SAP.  I'm…Continue

Started by Matthew Horner. Last reply by Jon Mirtschin Mar 20.

Mesh generation and export to clipboard 3 Replies

Hi all,Hi Jon,I am looking a way to generate a mesh out of an object in rhino. This mesh will then be used in some finite element software. What I actually need is the mesh generation command of FEM…Continue

Started by jm. Last reply by jm Mar 14.

varying beam size/profile extrusions 9 Replies

Hi Jon,Is there a "natural" way in geogym to make profile extrusions that vary in scale from one end to another?What I mean is something like the suspended members in the picture below. If you ignore…Continue

Started by RENE. Last reply by Damon Feb 10.

Installing Geometry Gym Plugins 126 Replies

If you have problems installing, there is instructions outlined here: you have problems,…Continue

Tags: SSI, StructDrawRhino, Error, Install, Gym

Started by Jon Mirtschin. Last reply by Nanda Mugnaini Feb 10.

Curves to Surface or Mesh

I'm trying to create a mesh or surface with the curves generated from FlowL. I saw that this could be achieved if the curves are flat but the curves I have are more 3D. …Continue

Started by LYX Liu Feb 1.

Result problem - sap2000

hello , im a new user of Geometry Gym , and i was just studing my model and i wanted to see the displacment of a point on my model useing GG and Sap2000 but for some reason the result component is…Continue

Started by Arash Dec 5, 2014.

Getting started examples 4 Replies

Hi!I have had some struggling to get started (and go on) with Geometry Gym so i hope this file can help someone to get started with the plugin. My idea has been to try to collect the most basic…Continue

Tags: example, gym, geometry, started, getting

Started by Harri Humppi. Last reply by Jon Mirtschin Nov 25, 2014.

SAP2000 12 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 GiogioTn Nov 20, 2014.

Comment Wall


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

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.

Comment by Tim on February 17, 2015 at 9:37am

Hey everybody,

Currently I have problems with baking my grasshopper structure into Oasys GSA. When I push the "bake to GSA" button, nothing happens. In my Rhino command window it says: 

Material Count: 1, SectionProperty Count: 1, Node Count: 441, Element Count: 1240
Load Case Count: 1

So apparently there is no error.

Could anyone please help me?

Kind regards


Comment by 建筑师哈哈 on October 5, 2014 at 11:31pm

Comment by MARTIN on August 21, 2014 at 8:34am

Hi everybody !

I have used grasshopper for few years, and I don't reach to understand the basics of the geometry gym for SAP2000 components.

Does somebody have a small tuto or a video to help me to understand how I can export my rhino model to SAP2000 ?


Comment by I_M_F [Iker Mugarra Flores] on June 5, 2014 at 10:20am

Hi Jon,

hope you are well, I have been thinking on testing how to export parametric models into Revit and I was wondering if I need to install your other IFC plugins in addition to " + REVIT/VASARI 64 Bit Installers, contact me for 32 Bit?



Comment by horst Becker on March 19, 2014 at 9:33am

ok, found the problem: the tolerances in my rhino ducument were too low....

Comment by horst Becker on March 19, 2014 at 3:39am
I run into a problem trying to import profiles with the ggCatalogueProfil Component.
I save my user profiles in the right direction. Usually it works very well, but now I have the problems that I cannot load the open surfaces as a brep...I just get the outline curves of my profiles.
any idea?
And second question: is it possible to import differnt profiles which share the same 0 Coordinate. That after loading them into my definition they share the same insert point?
Comment by Mona Gh on March 3, 2014 at 11:17am

Thank you Jon for your response. I did the same.

Comment by Jon Mirtschin on February 25, 2014 at 2:20pm

Hi Mona,

If you look at the dome in elevation, you can see splitting into a hemisphere won't get you integral shapes.  If you can split above or below (as indicated on attached image) shapes will be rational but some will be halved.  Not sure if this helps or not.


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