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: 842
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

Shell analysis of boxes.

Hi. I'm creating a system with boxes stacked on eachother. A think I got the model to work as wanted, but when changing the shell thickness of the structure with a gravity load it doesnt change the…Continue

Started by Troels Meldgaard Jensen yesterday.

Errors in assemble component

Hi, I was trying to analize a wood gridshell in karamba but when i use the assemble component it says that founds 3 cross sections, while i'm only assigning one cross section, how could it be ? thank…Continue

Started by Davide Rando yesterday.

Element utilization 2 Replies

Hello Karamba users,I have a question regarding utilization of elements. Is it possible to make a beam that only utilizes push? The element would only be able to take push forces and not…Continue

Started by RaphaelKilsdonk. Last reply by RaphaelKilsdonk on Tuesday.

Karamba c# 3 Replies

So I was inspired by the hackers guide to Karamba, and set out to do some coding using it in a c# project. It seemed to be going well, but I have hit a point where the wrapper is throwing…Continue

Started by Wes Mcgee. Last reply by Wes Mcgee on Tuesday.

Comment Wall


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

Comment by ma qingsong on January 30, 2017 at 7:09pm

Dear Márcio:

You are very friendly. Thank you so much.

I'm sorry about that I did not describe the problem right. My English is bad.

I means the waffle structure and 6mm steel plate are Welded together. They become the overall structure, and I give the strong power to the overall structure to check the displacement. As it is shown in the image, the green plate is the steel plate, the yellow is the waffle structure. The overall structure is the waffle structure and steel plate are Welded together. How to analysis? Could you help me finish the program again?

Thank you very much.

Comment by Márcio Sartorelli on January 30, 2017 at 7:12am

Hello Qisong,

See attached the changes I made. To parametrize the thickness of the plate you just need to multiply its material density with the thickness (going from kN/m³ to kN/m², or just from volume to surface load).

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?




Search Grasshopper


  • Add Photos
  • View All

© 2017   Created by Scott Davidson.   Powered by

Badges  |  Report an Issue  |  Terms of Service