I would like to suggest the addition of Classifications on Composite-Layers and Complex-Profiles-Layers.
Problem:
If we imagine a Composite Wall, with 25cm of Concrete and 20cm of Insulation on the outside.
This is how it looks in the floor Plan:
I would like my Concrete Layer to have Concrete-specific Properties that I can set only for the Concrete Layer. I also would like my Insulation Layer to have Insulation-Specific Properties.
What are examples of such Layer-specific Properties? Here are some really common ones from the IFC Data Scheme, not necessarily bound to it though, could be any Properties that someone would want only on the corresponding Layers.
- Concrete specific Properties (Pset_ConcreteElementGeneral):
- StrengthClass
- ExposureClass
- ReinforcementVolumeRatio
- CastingMethod
- etc...
- Insulation specific Properties (Pset_InsulationGeneral:
- AcousticRating
- FireRating
- etc...
I do not want Concrete Properties on my Insulation Layer. Same vice-versa, I don´t want Insulation Properties on my Concrete Layer. As a matter of fact I can not allow it. For any use case within a BIM project it is just not right to have properties in places where they are not meant to be. For quantity takeoffs within external software it is an absolute nightmare. Also it absolutely stands against buildingSMART Standards just as a semi-relevant side note.
Also the Ifc Entity Mapping is not correct. This example Composite-Wall should have the following IfcEntities according to their Composite-Layers:
- Concrete:
- IfcWall (PredefinedType: NOTDEFINED)
- IfcWall (PredefinedType: NOTDEFINED)
- Insulation
- IfcCovering (PredefinedType: INSULATION)
Solution:
Have each Composite-Layer listed within the Classification and Properties tab, and allow for custom classifications for each of those Layers. This is a quick UI Design of how that could look like. Please note that there are fundamental properties that are on each Layer (ID, Structural Function, Position, Renovation Status, Show On Renovation Filter) and there are also specific Properties only for that particular Layer (see "Materail properties" tab within the UI Design)
(This also solves another Wish which is currently on the Roadmap: Renovation status for composite walls and complex... - Graphisoft Community. That wish is though only a specific need within my bigger wish. My wish focuses on the core problem, missing classifications on composite layers.)
Feedback and Improvements to this design and functionality are always welcome!
Cheers!
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