Hi Marco, I was thinking maybe you can help me with a quick question. I have a model with walls and a plate, and I would like to design only the plate but I cannot make a design group for a plate. Do you know what am I doing wrong here? ![]()
Hi Marco,
Iโve attached a quick exercise I created to test selecting and designing only the bottom plate, without designing the walls.
In the attached Grasshopper script, Iโve also marked two additional questions:
- In the analysis settings, when calcDesign is turned on, does it mean the model recalculates based on the existing reinforcement, or will it auto-design the elements again?
- Regarding the quantity estimation result, do you know why I canโt select this option and get the result? Am I missing something?

Please let me know if you have any questions, and thanks again for your help!
FEM-Design - Bottom plate test.gh (41.8 KB)
Hey @AndreiM
- looks like there is a new bug due to a new femdesign release related to concrete estimation.
For the time being, you can use GetResultsFromBsc using the attached .bsc file.
quantity_estimation.bsc (4.6 KB)
- Unfortunately, there is no currently way to specify which element can be design. By default, the entire structure will be designed. I will open a ticket to have the features open.
CalcDesignwithin theAnalysis.Definecomponent will be removed in the next release
Thank you again Marco for your fast support, it really is helpful ![]()
if you are familiar with C#, you can create any design group without restrictions.
If you want to try, there is a little guide that shows how to reference a .dll in grasshopper. FemDesign.Core.zip (755.3 KB)
You will need to specify the c# input component in such a way that you set the right type.
var designGroup = new FemDesign.Calculate.CmdDesignGroup
{
Type = FemDesign.Calculate.DesignGroupType.RCSurfaceLong,
Name = "MyDesignGroup",
Color = System.Drawing.Color.Red,
Guids = slabs.Select(x => x.SlabPart.Guid).ToList()
};
Let me know if you need some help. It is really helpful to know these tricks ![]()

