Drag a Point item into the flowchart below Start. Type: Slope and Delta X Slope: GutterSlope Delta X: GutterWidth From Point: P1 Codes: Point = "Gutter" , Link = "Top" , "Pave" Create P3 & L2 (Curb Face Rise): Drag another Point item. Type: Delta X and Delta Y Delta X: 0.0 Delta Y: CurbHeight From Point: P1 Codes: Point = "TopCurb" , Link = "Top" , "Curb" Create P4 & L3 (Curb Top Width): Drag another Point item. Type: Delta X and Delta Y Delta X: -CurbWidth Delta Y: 0.0 From Point: P3 Codes: Point = "BackCurb" , Link = "Top" Step 4: Close the Geometry and Define the Shape
The Subassembly Composer is a standalone application installed alongside Autodesk Civil 3D. It allows engineers and designers to visually create complex, custom subassemblies using flowchart logic without needing advanced programming knowledge. Why Use Subassembly Composer?
Name your parameter (e.g., LaneWidth ) and set the type to . Set the default value (e.g., 3. Building the Geometry (Points, Links, Shapes)
Developing a custom subassembly typically follows a standardized six-step process: FDOT Civil 3D Subassembly Composer Subassembly Composer Autocad Civil 3d Tutorial Pdf
Many universities and Autodesk Student communities publish PDF walkthroughs. These often contain a sample project (like a "Daylight Basin" or "Curb and Gutter").
A good Subassembly Composer PDF typically covers the hierarchy of the tool:
While no single official exists from Autodesk, dozens of high-quality community and academic PDFs are available through targeted online searches. Mastering this tool will significantly enhance your corridor modeling capabilities, making your Civil 3D workflows faster, smarter, and more adaptable to real-world design constraints. Drag a Point item into the flowchart below Start
Displays a real-time dynamic rendering of the geometry. It operates in two modes:
To apply this, create a Target Parameter named Trg_Edge with a type of . In your point properties (e.g., P2), check the box for Curb/Profile Target override and select Trg_Edge . Conditional Decisions (Cut vs. Fill)
If SlopeDirection = "Left" Then LaneSlope = -1 * LanePercentSlope / 100 Else LaneSlope = LanePercentSlope / 100 End If Type: Delta X and Delta Y Delta X: -CurbWidth Delta Y: 0
While I cannot directly provide a PDF file, the following official and user-created sources are excellent places to find :
For those looking for a structured , Autodesk and third-party providers offer extensive documentation:
The Subassembly Composer is a standalone application installed with AutoCAD Civil 3D, and it is available to all subscription customers. Its primary purpose is to provide a flowchart-style interface for composing and modifying complex subassemblies without the need for any programming knowledge.
file and import it into a Civil 3D Tool Palette for use in a corridor. Essential Interface Panels