- Mon Dec 10, 2012 2:10 pm
#210442
We are working on a series of support material for our students to use ArchiCAD as a basic BIM model for energy evaluation. However, the way the Energy Evaluation in ArchiCAD 16 works is quite specific on how you need to model...
E.g. you need to model your "heated and protected volume" using Zones that touch the internal faces of the enclosing elements.
That is a perfectly valid starting point, but our regional regulations (based on EN 13790) demand that these volumes are created using the outer faces of all elements (e.g. zones touching the exterior faces). In ArchiCAD, you can define multiple sets of Zones, e.g. on different layers, but they have some strange limitations. When I created Zones using the Walls Reference line and place the reference line on the exterior side of the building:
E.g. you need to model your "heated and protected volume" using Zones that touch the internal faces of the enclosing elements.
That is a perfectly valid starting point, but our regional regulations (based on EN 13790) demand that these volumes are created using the outer faces of all elements (e.g. zones touching the exterior faces). In ArchiCAD, you can define multiple sets of Zones, e.g. on different layers, but they have some strange limitations. When I created Zones using the Walls Reference line and place the reference line on the exterior side of the building:
- * The 3D representation of the zone subtracts the Walls volume from the zone.
* The scheduled Zone Net Volume is indeed net and not gross.
* Connecting or cropping zones to roofs also uses the bottom side of the roof or slab and not the top side (which I need for a gross volume). So I need to add a vertically offset roof or slab to connect to.
* Then I drew the necessary zones manually. My volume is now correct. But the outer surface is not, as e.g. the faces between the two zones is counted twice. I tried to SEO Union the zones to get the net outer surface of the volume. This does not work, alas.
* Remembering how our local Revit-using colleagues are using Mass Models for this kind of calculation (and others using SketchUp), I modified the zones into MORPH objects and made a Boolean Union of the different MORPH objects into a single all-encompassing volume. This works fine.
* However, in a schedule of the MORPH object, I could only list total surface area and volume (which is correct), but can not distinguish between individual faces. E.g. when applying different materials to faces, I can not schedule them. Making a schedule by components does not support MORPH objects.
--- stefan boeykens --- architect-engineer-musician ---
ARCHICAD24/Revit2020/Rhino6/Unity2019/Solibri
MBP2019:i9Octo2.4Ghz+32GB+Vega20/Catalina+Win10
ArchiCAD Since 6.o
ARCHICAD24/Revit2020/Rhino6/Unity2019/Solibri
MBP2019:i9Octo2.4Ghz+32GB+Vega20/Catalina+Win10
ArchiCAD Since 6.o