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

Force density

Hi.Is there any way to control the length of the links of a mesh during force density relaxation? Usually in the comercial solutions which I use this is achieved by calculating the correct force…Continue

Tags: density, Force

Started by David Mavrov Jan 31.

Karamba to SCIA 2 Replies

Hello all, I am interested in importing a model from Karamba analysis to SCIA model keeping the geometrical and structural information. Could you tell me if this is possible?I have downloaded a SCIA…Continue

Started by popi papa. Last reply by popi papa Jan 16.

Karamba to SAp2000 3 Replies

I'm using the ggKarambaIFC component, but I do something wrong.I do the output IFC and then I import it into Sap, But it doesn't recognize the Beam selections that the Beam optimizer did into…Continue

Tags: sections, ggkarambaifc, geometrygym, ggkaramba, cross

Started by Alexia Ch. Last reply by Jared Parker Jan 3.

Karamba to Robot missing component 2 Replies

Hi Jon,In a previous version of the ggrobottokaramba plugin you had provided a component that bakes the output of a Karamba model directly into Robot. In the most recent versions of the ggrobot and…Continue

Tags: Robot, to, Karamba, Gym, Geometry

Started by Habiba Moubarak. Last reply by Habiba Moubarak Dec 18, 2017.

Sweep custom profile (not from database) 2 Replies

Is it possible to work with custom profiles ? I want to draw or import a custom profile by my need. It's just an example below of many different profiles…Continue

Started by MojaPana. Last reply by MojaPana Dec 1, 2017.

Revit-Rhino-Tekla 1 Reply

Dear All Friends,I have some customer using Revit for concrete modeing, but them can not make rebar model and shopdrawing by Revit. I see Rhino can input model revit through IFC file or some…Continue

Started by NGUYEN DUC HOA. Last reply by Jon Mirtschin Nov 26, 2017.

Installing Geometry Gym Plugins 133 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 Jon Mirtschin Nov 26, 2017.

Transfer of Geometry Gym Discussion Group

I'm assuming that group discussions will also be closed with the pending forum transfer.There is a Geometry Gym category under plugins on discourse.…Continue

Started by Jon Mirtschin Nov 20, 2017.

Comment Wall


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

Comment by Hiroshi Amano on September 29, 2016 at 1:14am

Hi Jon,

Thank you for quickly sharing many interesting examples.

The grid loading component looks working well in my current case.

Kind regards,


Comment by Jon Mirtschin on September 28, 2016 at 11:49pm

Hi Hiroshi,

I have a bespoke grid loading component, but it doesn't seem to have been used much so I'd advise using the GSA functionality.

I just created a folder to put sample files in Dropbox, browse into the Samples > Structural Analysis > GSA folder and there is a grid loading script there.



Comment by Hiroshi Amano on September 28, 2016 at 8:25pm

Hi Jon,

I'd like to try to use ggGSALoadGridArea for assigning wind loads on a grid frame.

Do you have any example file of using that component?  I thought the component's parameters basically correspond to GSA inputs, but there are something I'm not sure how to assign in gg.

Thank you and regards,


Comment by simone moroni on August 22, 2016 at 3:53am

Hello, I'm trying to bake grasshopper 2D structure (is a section of my structural pannel) with the comand "ggSAPbakemodel" sap, but when I select "open model in SAP" it doesn't work and rhino goes to crash. I've SAP 14  version, is it too old for work with geometry gym?

Thank you very much for reply

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?

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