Using the visual logic editor to drag-and-drop geometry elements.
This comprehensive article serves as your ultimate guide to the Subassembly Composer. We will explore its interface, walk through a step-by-step tutorial on creating your first custom subassembly, and curate a list of the top PDF tutorials and training resources to help you master this powerful tool.
Instead of entering a raw number in the Delta X box, type your parameter name: LaneWidth . In the Slope box, type your parameter name: LaneSlope .
Connect to P3. Delta X = 0, Delta Y = -CurbHeight. Step C: Adding Links and Codes Add a Link (L1) connecting P1 to P2 (Code: "Top"). Add a Link (L2) connecting P2 to P3 (Code: "Top"). Add a Link (L3) connecting P3 to P4 (Code: "CurbFace"). Step D: Defining Shapes
Because this is a comprehensive, publication-ready guide, standard article formatting is used below to ensure deep, technical coverage of the topic.
Located in the center of your screen, this is your primary workspace. You build subassemblies hierarchically by dragging and dropping workflow items (geometry, advanced variables, and decisions) from the Tool Box into a flowchart structure. The Tool Box
In the Subassembly Composer, you will see a 3D model of the subassembly. You can now define the subassembly parameters, such as the lane width, shoulder width, and curb height. To do this, click on the "Parameters" tab and enter the required values.
In the Delta X field, reference an input parameter named DitchInflowWidth . Step 3: Define the Ditch Bottom (P3 and L2) Drag a third node into the sequence. Set the construction type to Delta X and Delta Y . Set Delta X to an input parameter named BottomWidth . Set Delta Y to 0 to keep the ditch bottom perfectly flat.
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Subassemblies can adapt automatically to Civil 3D targets (surfaces, alignments, profiles).
