algorithmic modeling for Rhino



Karamba3D is a parametric structural engineering tool which provides accurate analysis of spatial trusses, frames and shells.

Current Version: 1.3.2 (July 9 2019)

Location: Vienna
Members: 1106
Latest Activity: Sep 7

Karamba3D is an interactive, parametric finite element program. It lets you analyze the response of 3-dimensional beam and shell structures under arbitrary loads.

Karamba3D is being developed by Clemens Preisinger in cooperation with Bollinger und Grohmann ZTGmbH in Vienna.

Download a free trial now! Licenses for educational or commercial purposes can be purchased at

downloads, manual: or

examples (for Karamba3D 1.3.2):

release notes:

scripting guide & examples:

repository with unit tests:

Here a beam structure based on stream-lines with bending moments:


More details, manual, examples and download ....


This grasshopper discussion forum is no longer maintained - please post all questions on the McNeel Forum. Thank you


Discussion Forum

Steel concrete composite bridge

Dear Karamba users,I am trying to make a simple steel-concrete composite bridge. However, I have a problem with connecting my concrete deck slap to the shear studs on the longitudinal steel girders.…Continue

Started by Niels Buiting Sep 7.

Gridshell Modeling Karamba 3 Replies

Hi all, I am trying to model a grid shell on karamba. The problem is that once I model in my geometry onto karamba, the beams do no consist of any initial moment, which would be the case as the…Continue

Started by Thomas Fenech. Last reply by Karamba3D Jun 22.

Choosing the high quality car tyres sensors for long traveling

It's always important for everyone for choosing the high-quality sensors that can provide tire pressure control.  I have checked the…Continue

Started by Elite Mater Jun 20.

beam resultant forces 3 Replies

hi guys,I don't know why, but when I connect a cross section to assemble model, the resultant forces and bending moments change..I've tried it with a single beam and they don't change but with my…Continue

Started by pablo. Last reply by Karamba3D May 30.

Comment Wall


You need to be a member of Karamba3D to add comments!

Comment by Karamba3D on May 2, 2019 at 3:05am

We are glad to be once again hosting a Karamba3D workshop in Vienna.

July 3-5 2018

Early bird rates until May 10.

Details can be found at

Comment by Karamba3D on April 16, 2019 at 1:46pm

Hi Wilinton, could you please open a new discussion for the topic? There it would be easier to communicate.
You definition is quite large and complex. For debugging try the divide and conquer method: Split up the definition into meaningful parts and test the parts individually.



Comment by Wilinton Felipe Colunche Núñez on April 14, 2019 at 10:20pm

Hi all. I am modeling a metal cover, but I have designed it separately (beams and belts separately); I've done that because I designed all the coverage together and then I designed it in the sap or etabs program and compared the results and they were very different (I did not have this design ordered, but I did it in a quick way to check, so I did not I upload said file). 

My question is how can I get equal results in both grasshopper (karamba) and in Sap or Etabs; what conditions should I take into account to model the entire coverage and what should be considered in the beam-belt nodes (intersection node)?. upload my file in grasshopper where I design beam and strap separately, but the visualization is of all coverage. I hope you can help me. Thank you.

Comment by Karamba3D on March 26, 2019 at 2:11pm

Hi Lu,

I will take a look at it. Best C.

Comment by jiaxing on March 23, 2019 at 12:58pm

dear Clemens and Robert, miss you two so much, It's me Lu

So further I go in Beijing with the ability taking your two great help  in Vienna

May I ask a little thing, the 4 BESO  in karamba rhino6 testExamble is not work, is there anyway to get those download to see how the example wors?

Comment by radhika agrawal on March 13, 2019 at 12:46am


I am working on branching column fabric formwork system and I have 2 doubts:

1) how can I take the kangaroo solid concrete element to karamba analysis for stress

2) how can I module the branching column line element path in karamba according to the given load

My aim is to optimise the fabric formed vertical system in-terms of reducing the stress and volume and form-finding of this system to the given load and support conditions  

Comment by Wilinton Felipe Colunche Núñez on February 6, 2019 at 9:00pm
Hi all Is it possible to create other cross sections? And if that is possible, how can I do that ?, some reference (book, chapter, ....) Thank you
Comment by Rafael Pastrana on December 14, 2018 at 1:23am

Could it be a render scale / visualization issue? @Arthur

Comment by Marco Pellegrino on December 12, 2018 at 12:47pm
Arthur. It shouldn’t have that big difference. Could you share your file? Have you check the global reaction ? Are they the same?
Comment by X.Arthur.Ma on December 12, 2018 at 10:22am


I have a question on the shell analysis.

For shells, is the analysis mesh independent?

Same settings except for the mesh topology, but the result is so different.


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