Friday, 16 April 2010

Parametric Structure Models in Grasshopper

The first Geometry Gym plug-in for Grasshopper with Structural model Interaction has just been uploaded.
http:\\  Versions for GSA, Strand7/Straus7 and Sofistik are available, other modelling interaction will soon follow (ie  SAP, SDNF, Robot etc).  If you want to influence the priority list for release, send me an email with which version you'd like to use.

So, here's a screen capture demonstrating the use of the plug-in, and sending the parametric model out of Rhino into GSA (similar for Strand7, Sofistik and others).

And to try this for yourself, here's the sample models shown and a revisit of the Gherkin.

First Grasshopper Definition to generate structural beams :          GSA Robot SAP2000 Sofistik Strand7

A simplified version of Newcastle Millennium bridge.  I haven't had a chance to add a slider to rotate it yet :-(

Associated Rhino model with properties :  GatesHead Rhino Model
Grasshoppper Definition : GSA Robot SAP2000 Sofistik  Strand7

Revisiting the mini-Gherkin.  Note I'm sure if I get a chance to study Grasshopper Trees and Branches this definition could be simplified a bit.

Associated Rhino model with properties :  Gherkin Rhino Model
Grasshopper Definition : GSA Robot SAP2000 Sofistik Strand7


  1. Hi Jon,
    I'm quite busy at the moment but hopefully I'll have time to play around with the plug-in this week and make some comments.
    Keep in touch.


  2. Great Job!!!!

    could you please let me know how I can have the SAP or STRAND version of this Grasshopper plug-in?


  3. Installation instructions are found here:

    Post if it is unclear or doesn't work.

  4. Hi Jon,

    Do these models work with the current version of geometry gym for strand 7? I am trying to understand how to use the plugin however on opening the examples i get an error about missing objects such as 'ssiSTR7CreateBeamCrv'


  5. Hi Michelle,

    Did you download and install the Strand7 plugin from ? If you did, the plugin can't have registered properly. Refer and let me know if it still doesn't work.