C:\ProgramData\Autodesk\C3D 2024\Sample\Civil 3D API\Subassembly Composer\
Once opened, you will see:
Then click .
Finding a direct, official "paper" (like a research article) on Subassembly Composer (SAC) is rare because it is a specialized technical tool. However, the most useful resources are and tutorial workbooks typically distributed at Autodesk University (AU) or by certified instructors. Subassembly Composer Autocad Civil 3d Tutorial Pdf
| 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 | | Mistake | Symptom | PDF Solution |
: Specific coordinates that define the skeleton of the subassembly (e.g., the edge of a lane). the edge of a lane).