: Using basic VB.NET expressions (e.g., Math.Max , Math.Min ).
Apply labels like "Top" , "Crown" , "ETW" (Edge of Travelled Way), or "Hinge" to generate long-running 3D feature lines along the corridor model.
Short intro paragraph: Subassembly Composer (SAC) enables custom subassemblies for AutoCAD Civil 3D corridors by letting users define points, links, parameters, and logic graphically. Custom subassemblies help model complex cross-sections not available in the out-of-the-box library.
A well-structured on Subassembly Composer typically includes: Subassembly Composer Autocad Civil 3d Tutorial Pdf
Right-click on any palette tab and select .
Autodesk provides the official Subassembly Composer Help which can be printed as a PDF.
Subassembly Composer AutoCAD Civil 3D Tutorial: A Comprehensive Guide (PDF Resource) : Using basic VB
All string entries in point, link, and shape codes must be wrapped in straight double quotes (e.g., "Top" , "Subbase" ). Leaving out quotes will throw validation errors.
Standard corridors must adapt to changing terrain. The tool acts as an IF/THEN conditional statement within your flowchart, branching the logic based on geometric thresholds.
Drag a block from the Advanced section of the Tool Box into your Flowchart. Link Codes Assign codes like "Top"
Open your browser, search for "site:au.autodesk.com Subassembly Composer PDF" , and begin your first real tutorial today.
We will now calculate the next point based on the parameters.
This comprehensive guide serves as your definitive tutorial for mastering Subassembly Composer. You can save or print this article as a PDF reference guide for your future infrastructure projects. 1. Introduction to Subassembly Composer
Assign codes like "Top_Curb" , "Crown" , or "ETW" (Edge of Travelled Way) to your points. Civil 3D uses these codes to string together longitudinal feature lines along the corridor, which are crucial for automated 3D grading. Link Codes Assign codes like "Top" , "Datum" , or "Pave" to your links.
Subassembly Composer is a free standalone application from Autodesk that allows you to create parametric, behavior-driven subassemblies. Instead of coding from scratch using .NET or VBA, you use a visual workflow—drag-and-drop flowcharts, mathematical expressions, and decision trees.