Building Information Model.
There is a lot of debate about how far to take a model, but it generally leads to more rational buildings if you model surface thicknesses - the idea being to make up as little as possible so that in extracting your views, the model is dimensionally correct. We were having a little fun about the tiny slab trimmer wall because it is an extreme and unlikely case.
You wouldn't model screws, but they could be accounted for in the bill of materials by making them relate to the area of wallboard, say.
Composite wall assemblies will allocate the correct materials to your bill of materials without actually being modeled.
If "Render" is what youse call "Stucco," what do you call the process of getting the fat out of an animal?
Let me answer that: Charging him extra for an ArchiCAD Add-On that should have been there in the first place.
Dwight Atkinson