Workflow between Archicad and GH

[furtonb]

@mLyhne

an external library of constructions, composites and materials from archicad

did you save the attributes from AC to an external XML file, or what do you mean by that?

@mLyhne

so doing a basic energyplus or openstudio calculation based on the internal constructions, materials and programs is quite easy.

using the openstudio internal presets based on the ASHRAE standards?

because if you meant simulating based on the geometry and material properties defined in AC: I’m actually struggling to get a useful output in the first place. using the .gbxml method using Ecodesigner’s export function is not really working for me with more complex problems. decontructing zones with the GH connection is doable, but then the material property assignment causes me headache.

the materials: the original bMat database can be found here (macOS):
/Applications/GRAPHISOFT/ARCHICAD 24/Add-Ons/EnergyEvaluation/INT/MaterialCatalog.xml

I guess it could be converted to a JSON file, although I don’t yet know how. maybe someone can help here with ideas if it’s doable or worth doing at all. I don’t know the sources or the accuracy of these material properties (I was having a closer look at timber and concrete recently, and it would be really helpful to have a citation for the sources in the file…), but you said you have your own.

there are also some previous attempts to build a seamless workflow:

Workflow with ArchiCAD - Finally made it. Kind of

Hi @Akaroczkai, thanks for sharing some of the new features.That looks great. I have a question regarding the wall deconstruction: So far, I could split the external walls and get their external surfaces with the component, but that extraction is based on their reference line and how it was originally drew in Archicad. I wonder if there’s a way to extract the different surfaces of a wall based on their materials (e.g pick the internal surfaces of the external walls). Thanks in advance!

Making openings in Honeybee with(out) ArchiCAD

Hello there! Another tutorial coming up for those using ArchiCAD. But I guess it also might be helpful for those working only in Grasshopper and Rhino or with any other design application. Today I’ll try to share with you my way of dealing with openings We’ll start with making simple plan, 4 exterior wall and 1 interior. Additionally 2 windows and 2 door as shown below. [01] This is our model in 3D window. [02] In the next step will connect our ArchiCAD with Grasshopper. Wh…

these are related to gbXML:

gbXML import from Archicad - how to model shading?

I’m facing the same issue with Archicad export of gbXML: Adjacent interior walls are treated as separate items Floors are exported as “Interior Walls” (this could be fixed manually in Ladybug Spider but clicking hundreds of floors by hand is not what I’d like to do.) No shading geometry export This makes models from Archicad useless, am I right ?

Import gbXML file generated from ARCHICAD

Maybe that is a silly answer, but have you tried to “show” the last component? In screenshot it is dark grey which suggests it being “hidden”

Problem error import gbXML

@Akaroczkai could you take a look at this? ARCHICAD 24 INT b3008 still produces the same issue. a simple single zone model with a window/door is enough to reproduce it - the .pln was too big to upload. I didn’t run the simulation with the Energy Model Review panel, others mentioned that without running the gbXML would work fine, it didn’t. [image] test.xml (67.8 KB) @mostapha the LBT 1.0 doesn’t (yet) have the Honeybee_gbXML to Honeybee component? it’s only part of the Legacy plugins?

also, material setup and modelling techniques are crucial - if you model the walls, slabs, roofs as single composite structures, you are fine, you will get proper material/layer/construction assignment in the gbXML file. if your model is set up in a different way, you will face issues (if you have the load-bearing slab and the flooring as separate elements, etc., or the wall as different layers). I don’t know how to make the gaps between the two sides of the internal walls disappear and have a nice, clean gbXML file (it’s also a problem when using the GH connection tool).

I would be glad to hear your findings as I am also hoping to find a satisfactory way to have a seamless integration with energyplus in the end (albeit burying it two layers deep - honeybee/openstudio then EP is sometimes hard to oversee).

it’s a bit off-topic, but this article has a recent a great overview on the current energy-modelling capabilities (and its reliability) of ARCHICAD:

ArchiCad, EcoDesigner and Passive House

Ecodesigner is a complete blackbox to me. so is the built-in thermal bridge calculator, it shows zero transparency in its calculation methods.

the best would be to have an exporter from AC that converts the model to the HB schema:)
anyway, as you can see, right now I have more questions than answers to you, unfortunately.