Toposolid Sub-Divisions should draw from the same pool of types as toposolids do.
The introduction of toposolids in Revit 2024 is certainly a huge step forward for Revit's site modelling tools - however for those of us collaborating with Civil Engineers or using Civil 3D for some surface modelling.
Linked topographies remain the only viable method to preserve the breaklines (such as kerbs, retaining walls) in surfaces provided by other software's. However these cannot be split so we need to use sub-divisions to apply surface finishes to them.
When cutting in cross section and performing coordination with other disciplines the current capabilities of sub-divisions (a single height *above* the surface and one material) are not fit for purpose.
We should instead be able to select from the same set of layered buildups (including variable layers) which toposolids themselves make use of.
The ability to offset from the original toposolid should remain - but with the additional ability to enter negative values.
This is an essential improvement to Revit's site modelling tools. Without it our ability to collaborate effectively with Civil consultants is greatly reduced.
