Name your parameter (e.g., LaneWidth ) and set the type to . Set the default value (e.g., 3. Building the Geometry (Points, Links, Shapes)
| Mistake | Symptom | PDF Solution | | :--- | :--- | :--- | | | Corridor says "Target not found" | Check section on 'Mapping Targets in Corridor Properties' | | Using inches vs. feet | Curb is 1000x too big | Use Units parameter or convert all math to consistent units | | Not using AP1 (Attachment Point) | Subassembly floats in space | Always reference P1 relative to AP1 (the insertion point on the assembly) | | Invalid Visual Basic expression | SAC shows red error on export | Use the 'Expression Tester' built into SAC – tutorial shows syntax for IIF vs IF | | Shapes not showing codes | Can't create material quantities | Assign 'Code' to Shape (e.g., Pave or Base ) – PDF includes code naming conventions | Subassembly Composer Autocad Civil 3d Tutorial Pdf
Force points to follow a specific 2D alignment, feature line, or survey figure horizontally. Name your parameter (e
Target parameters allow your subassembly to adapt to external Civil 3D elements like surfaces, alignments, or profiles. feet | Curb is 1000x too big |