The ability to lock corridors (as you can with surfaces) would be a great feature. The dynamic aspect to Civil 3D is fantastic for optioneering and during detailed design but once the final design is completed then you need the ability to lock the design down. This is one of the biggest criticisms of highway design in Civil 3D from Bentley MX users. This issue is linked to the sharing of subassemblies where a user without the latest subs could open a corridor, rebuild it and corrupt it.
The instability of corridors means:
- To extract 3D polylines for setting out, or solids or data the corridor must be rebuilt first.
- Corridor Sections in Section Views that reference the corridor can become corrupted.
- Holes in the corridor surface can appear.
- Combined surfaces where multiple surfaces are pasted in can become corrupted.
- Where ‘Drape’ corridors have been used to create surface profiles, their dynamic rebuilding results in unnecessary processing.
- A locked corridor could make it easier to issue to external parties without needing to issue subassemblies too.