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: 1638
Latest Activity: Mar 28


Installation instructions are located in this discussion,

Discussion Forum

need support on “ggGeoDome” 1 Reply

Hello,I have a question on module "ggGeoDome", the vertex of the polyline curves it generates do not coincide, but if I invert the boolean of "Lines", the vertex are coincide.So is there a way to…Continue

Tags: geodome

Started by luigi. Last reply by Jon Mirtschin Mar 28.

BullAnt Sweep Profile of IPE can not be sweeped

Dear All,I have problem with BullAnt sweep profiles . ( HEA IPE ) what can be possible problem of it ?Continue

Started by emre kok Aug 29, 2020.

SAP2000 43 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 Gery Jun 22, 2020.

Component ID conflict 6 Replies

Hi everyone, I got a problem after installing StructDraw. When opening Grasshopper I get this message …Continue

Started by OwnWindow. Last reply by Recep Kahraman Jun 3, 2020.

Student licens 2 Replies

Hi Geo Gym.I'm a student at Aarhus University in Denmark and my trial license has expired.Is it possible to get a free student license for a year?If yes, how ? Best RegardsTroelsContinue

Started by Troels Meldgaard Jensen. Last reply by Isabella Butts Feb 25, 2020.

Load Case Combination

Hi..I'm trying to use the GeometryGym plug-in "ggRhinoRobot" to perform a structural analysis model.I want to define different load cases and different combinations of these load cases. But the…Continue

Started by Zaineb Tounsi Oct 15, 2019.

IFC to Revit inserts at wrong location

Hello,I am trying to get my IFC Data(simple box geometry) into Revit. The geometry was "traced" from point cloud data and therefore is georeferenced. When I import the IFC data and point cloud into a…Continue

Started by Tim Barnes Jul 24, 2019.

transfer rhino to sap

hi,can anyone help me about this: i want to transfer my rhino file in to sap2000 v20,and i'm new to sap.i found out that i should use the geometry gym i downloaded […Continue

Started by mahsa May 21, 2019.

Comment Wall


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

Comment by Ravenerabnorm on November 5, 2020 at 5:16am
I have found that when I use ggSweepProfile on certain catalogue profiles the results are two dimensional i.e. on plan the profiles are a line, on elevation they look fine. Funnily enough the only profiles the sweepprofile fails to work on is I beams.
Is this a known bug or am I doing something incorrectly.
Comment by Bret Heyer on June 4, 2020 at 11:19pm
you can make a flange with construction points and a pline
Comment by nathanluke5 on June 4, 2020 at 6:00pm
Hi Arina,
Again you can create tapered sections using the ggRhinoIFC components. Can you please contact us at outlining which cataloguesprofiles you are wanting to incorporate.
Comment by nathanluke5 on June 4, 2020 at 5:59pm
Hi Lincoln, No you cannot create such a section in BullAnt currently. You could use ggRhinoIFC to create a compounded section. Is it for structural analysis?? We do allow creation of these sections in some of our analysis plug-ins also. If you want to discuss further please contact or post on the new Rhino Forum.
Comment by Arina on June 2, 2020 at 8:51pm

As far as I know, we can't customise a section to such extent in GG.

If GG happens to look into this issue, can you please look into

1. the customisation of a section tapered along length as well.

2. update the ggcatalogueprofile to incorporate the British Steel and EN10210/EN10219.


Comment by Lincoln on June 2, 2020 at 8:33pm

Dear all,

i am trying to build up a RHS with different flange thickness and web thickness. (like 400x300x8x15) But the BullAnt only can create RHS with same flange and web thickness. Can anyone know how to create such section? Many thanks!

Comment by nathanluke5 on May 5, 2020 at 9:01pm

Hi Diego, try updating your Etabs Plug-in. If it doesn't fix your issue please contact and we will gladly help you with fixing the issue.

Comment by Diego Abelino on May 4, 2020 at 7:22pm

Dear Jon,

I'm currently using Geometry Gym to create Frame elements, assign section properties and attributes to take into Etabs18.

the problem, that I'm facing is that the frame attribute "name" in the component "ggETABSFrameAtts" get not exported to Etabs. I can modify all the other attributes, but when I bake the model, the name of the Frame elements keep defined by default and not like I had defined previously with the component. Do you have any advice to solve this issue?



Comment by Ming Chong on July 18, 2019 at 4:17am

Hi, Just wondering do you have any plan to expand the functionality of GGEtabs, include components like diaphragm assignment, wind load assignment, ability to run analysis without bake and save, etc. That would be super helpful.

Comment by Schwarzchild on April 26, 2019 at 7:43am

Dear Jon,

I am using ggrhinoSAP to buid my model,when I bake model to sap2000,it says  "xxx SAP2000 not installed or in unexpected location",how can I solve this problem?

my sap2000 version:V17

Appreciate if you can help on that.



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