In this tutorial, we have covered the basics of Subassembly Composer in AutoCAD Civil 3D and provided a step-by-step guide on how to create a custom subassembly. By mastering Subassembly Composer, users can create custom subassemblies that meet their specific design needs, improving productivity and accuracy in corridor design.
: Enclosed areas used for quantity takeoffs, representing volumes like asphalt or concrete. Typical Workflow FDOT Civil 3D Subassembly Composer Autodesk University Handouts outline a six-step process for creating a custom part: Initialize Project : Name the subassembly and set basic packet settings. Define Parameters
Set the Slope to LaneSlope and the Delta X to LaneWidth . The preview panel will update to show a sloped line extending from the origin. Step 3: Extrude the Pavement Depth
This step-by-step example walks through building a standard parametric travel lane with variable width and a cross-slope target. Step 1: Define Input Parameters Subassembly Composer Autocad Civil 3d Tutorial Pdf
Subassembly Composer provides unmatched flexibility in AutoCAD Civil 3D, enabling engineers to solve complex design challenges efficiently. By mastering the basics of point, link, and shape creation, combined with logical decision-making, you can create custom assemblies that significantly improve productivity and design accuracy.
Used for daylighting scenarios where a link must project outward at a specific slope until it intersects an existing ground (EG) surface model. 3. The Core Building Blocks: Points, Links, and Shapes
: Point geometry can be defined by an X and Y Offset , a Slope and X Delta , or an Intersection of two paths. In this tutorial, we have covered the basics
Build geometry that default Civil 3D tools cannot replicate.
Go to and save your project. It saves as a PKT (Packet) file . Open Autodesk Civil 3D. Open your Tool Palettes ( CTRL + 3 ).
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) Typical Workflow FDOT Civil 3D Subassembly Composer Autodesk
: Set up input/output parameters (like Lane Width or Pavement Depth) and target parameters (like a surface to daylight to). Add Geometry : Drag points, links, and shapes from the Assign Logic
Used to define the subassembly name, input/output parameters, target parameters, and superelevation settings.
Auxiliary Points and Links (used for temporary construction geometry). Workflow: Decisions, Switches, and Sequences. 2. Flowchart Panel