algorithmic modeling for Rhino



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

Current Version: 1.2.2 (October 6 2016)

Location: Vienna
Members: 780
Latest Activity: yesterday

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

karamba is being developed by Clemens Preisinger in cooperation with Bollinger-Grohmann-Schneider ZTGmbH Vienna.

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

Stay up to date with the development of Karamba by joining our Grasshopper group where you can post your queries, requests or issues for Karamba.


downloads, manual: or

examples (for Karamba 1.2.2):

update report/known bugs:

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


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



Discussion Forum

Karamba, buckling problem about intermediate configurations 4 Replies

Hi everyone,I am trying to figure out how to get the intermediate configurations of a buckling beam under axial compression; the script I created gives me only the buckling configuration, does anyone…Continue

Tags: shell

Started by Davide Girardi. Last reply by Davide Girardi yesterday.

Snow load on roof structure 2 Replies

Hello everyone,I am modelling a greenhouse structure added on an existing building, and would like to apply the equivalent load of snow on it.The mesh load seems the most appropriate to apply this…Continue

Tags: beam, mesh, load, Snow

Started by Gwenaël. Last reply by Gwenaël Jun 15.

Simple shell element FEA 5 Replies

Hi everyone! First time posting here.I've got a simple problem - I've made a 2D block made of shell elements that is fixed along the bottom. Point loads on nodes of the shell elements push downwards…Continue

Started by Umar Hossain. Last reply by Umar Hossain Jun 13.

Value of the cross section heights from moments

Hi everyone,I would like to know the cross section heights from a complex structure. Therefore for a better understanding of how to use the 'cross section heights from moments' I have made two…Continue

Started by Tessa Ruseler Jun 13.

Comment Wall


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

Comment by ma qingsong on January 30, 2017 at 6:45am

Hello Márcio,

Thank you for your answer.

Normally I have done as you said. But it's no relate to the thickness of the steel plate. I want to change the thickness of the steel plate to check the displacement of the waffle structure. I uploaded the part of the program. Could you help me finish the program? Thank you very much.

Comment by ma qingsong on January 30, 2017 at 6:36am

Hello Márcio,

Comment by Márcio Sartorelli on January 30, 2017 at 5:54am

Hello Qinsong,

Do you have the steel plate mesh? If you do so you can use the Mesh Load component, setting the vector force to global in negative Z direction (the amplitude of the vector will be the mesh load (kN/m²).

In the component you can set the points of the mesh witch the load will be accounted, try to insert there only the upper nodes of your waffle structure.


Comment by ma qingsong on January 30, 2017 at 5:47am


I want to know how to make a program and analysis the structure of shell waffle covered with the steel plate.

I want to create the load for the steel plate(6 mm thickness) to check the displacement of the waffle structure.

I uploaded the schematic diagram and part of the program. Any suggestion? 

Please help me.

Thank you very much


Comment by karamba on January 20, 2017 at 12:16pm

Hello Earth,

use the 'Prescribed Displacement'-component and 'InitialStrain' from the 'Loads'-component to define support settlements and pretension in elements respectively. For details see the manual. It can be downloaded from or Please open a new discussion in case of further questions.



Comment by Earth on January 20, 2017 at 11:33am

Hello Team Karamba,

I am relatively new to Karamba. I was wondering if Karamba can deal with pretension problems, or support settlement problem where the initial displacement of certain amount takes place that causes forces developed in the truss or frame members. 

Kind Regards.

Comment by karamba on November 14, 2016 at 7:45am

Hi Balaji,

Although we don't have any tutorials relating to voronoi gridshells, the following tutorial explains how to set up a generic gridshell. You can use the same technique to apply it to the voronoi grasshopper setup.

Please note that most of the tutorials on our page are not set up by us and rather other users who have been kind enough to share them with us.

Comment by Balaji Visvanath on November 11, 2016 at 5:49am

Hi Matthew,

Thanks for the answer!

Yes, I actually do have a Voronoi Gridshell in Hand, made by myself but the Thing I am looking for is to optimize it (moving the seed points) according to the boundary conditions (loads), which made me stumble upon Karamba.

Do you have any closely related stuff?


Comment by karamba on November 11, 2016 at 2:01am

Hi Balaji, we currently do not have any specific tutorials relating to voronoi gridshells, but there are some tutorials on gridshells themselves. Otherwise I am sure there would be a wide range of tutorials in the wider grasshopper community to guide you through setting up a voronoi gridshell.


Comment by Balaji Visvanath on November 9, 2016 at 4:07am

Hello Team Karamba,

I am new to Karamba and have just purchased a PRO license (waiting for activation).

I am currently working on Voronoi Gridshell structures for my Master Thesis  and came across a very relevant example on your side. The example is

I am very interested in knowing more about it. Is there any related tutorial ? (i could not find any on the site)

Kind regards,




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