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: 1525
Latest Activity: on Sunday


Installation instructions are located in this discussion,

Discussion Forum

Joint Settings in ggSAP 1 Reply

Hi All,I'm working on a tall building model with a Diagrid structural system,I made the model in Grasshopper and just working on doing the analysis in SAP so usig ggSAP. I faced some challenges in…Continue

Started by Amirreza Ardekani. Last reply by Jon Mirtschin on Sunday.

SAP2000 23 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 JJ T May 15.

ggSap Error 1 Reply

Hi JohnFirst I want to thank you for all of you fascinating pluggings. I have used ggSap now for 1 year and I found it very helpful.But now that I upgrade it to v19 and upload the license  the…Continue

Started by Ghazal Javidan. Last reply by Ghazal Javidan May 15.

Installing Geometry Gym Plugins 130 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 orfeas kount May 6.

Sofistik to Rhino 5 Replies

Hi dear Colleagues,right now I am working on shell structure. After design, I exported the geometry to Sofistik for structural analysis. Now I need to Import FEM model from Sofistik for further…Continue

Started by Amir Saadat Fard. Last reply by orfeas kount Apr 30.

ggETABS - 2016?

Hi,I'd love to use GG to build an ETABS model, but unfortunately we got rid of our license for 2015 when we upgraded to 2016. Is there support for the new version yet, or any kind of workaround?Continue

Started by Josef Taylor Apr 14.

Grasshopper to IFC 2 Replies

I have a space-truss like structure in grasshopper, which I've already sent to Revit and Robot FEA, which I want to export to IFC. The IFC export from Revit ends up enormous for some reason, so I'm…Continue

Started by Josef Taylor. Last reply by Josef Taylor Apr 10.

Grasshopper to Sap2000 by GGstructure analysis 2 Replies

Hello everyone,I'm trying to transfer surface or mesh created in grasshopper to SAP2000 shell.Does anyone have any simple example?thank you very muchClaudioContinue

Started by claudiodemattia. Last reply by Jon Mirtschin Feb 6.

Comment Wall


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

Comment by Scott Rathie on April 7, 2017 at 12:20am


I am pretty new at using geometry gym for GSA structural analysis and was wondering if there is a way to query modal frequency

Comment by David Delgado Vendrell on March 26, 2017 at 5:17am

Any Archicad user with a bit of experience with AC-GH Live Connection ? 

Comment by Hakam husam on February 27, 2017 at 6:49am

Hey guys, ive been trying to use GG plugin, unfortunately I am an architect not a structural engineer, no clue in how to know what each section in the catalogues is shaped like, how can I find out this ? is their a PDF catalogue ?

my 2nd question, how can I create a custom profile to enter in the GGsweep ?

Comment by Morten Ydefeldt on January 23, 2017 at 5:20am



As you can see from these two geodesic domes it seems like it can be created with two different permutations.

The geodesic dome which I am able to construct in GG is the 'wrong' one, I want the edges of the pentagons to be parallel. I believe it's a question about how the base icosahedron is flipped when the dome is created, is there a way to construct the right geodesic dome from your script?

Comment by Jon Mirtschin on December 15, 2016 at 8:45am

Hi Mostafa,

I just emailed you, refer to for license request procedure.

Comment by mostafa elhodiry on December 15, 2016 at 8:04am

hai all 

can anyone help for getting license for a trial version ( sap and etabs ) 

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


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