Contains the subassembly name and image description.

4. Step-by-Step Tutorial: Creating a Parametric Lane with Curb

Drag a geometry node into your Flowchart. It automatically connects to the Start node as P1 at the Origin (0,0).

This guide serves as a comprehensive tutorial to the interface, logic, and best practices for creating high-quality subassemblies.

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Effective tutorials prioritize several critical areas of the SAC interface:

Enumerations create drop-down menus within Civil 3D for choice-based configurations (e.g., choosing between a "V-Ditch", "Flat Bottom", or "Trapezoidal" shape). Go to the Definitions tab and select Enumerations . Create an Enum named DitchType and add display items.

Happy Designing!

Always define subsequent points relative to previous points (e.g., P2 relative to P1).

Input parameters allow users to change dimensions directly inside Civil 3D properties. Create parameters for variable widths, depths, and slopes. Use clear naming conventions like Lane_Width or Curb_Height . Target Parameters

The building blocks. Defined by coordinates (x,y), slope/distance, or intersection.

Name it CurbHeight , set the type to , and give it a default value of 0.150 (meters).

[P1: Origin] ----------- (Delta X) ----------- [P2: Back of Curb] | | (Delta Y) (Delta Y) | | [P4: Lip of Gutter] -- (Slope) -- [P3: Flowline] ----+ Step 1: Define Input Parameters Go to the tab at the bottom. Click Create Parameter .