Hello
One of the most common roof types is the flat roof with tapered insulation. Currently, we often have to create each slope as a single-plane roof, which is very time-consuming.
It would be a significant improvement if the Multi-plane Roof tool could be used more effectively for flat roofs. The tool is already close to what’s needed but requires some "polishing" to handle drainage layouts correctly:
- Gullies as Atriums: Currently, the minimum size of a roof opening (Atrium) seems tied to the pitch. At a 2% slope, ArchiCAD requires a very large opening (55 m) to process the geometry. This minimum threshold should be reduced to 10–20 cm to allow for standard drainage gullies.
- Global Perimeter Settings: Currently, users often have to define perimeters as gables polygon by polygon. It should be possible to set the entire perimeter to a specific edge type (like a gable/vertical end) in one go.
- Advanced Drainage Patterns: The tool should better support complex flat roof scenarios, such as butterfly roofs (two slopes meeting at a low line) and cricket headers (extra slopes to divert water around skylights or chimneys).
Thank you
@GabrielGG