AU Class
AU Class
class - AU

Stepping into Variable Height Retaining Walls

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    Mechanically-stabilized earth (MSE) walls are inherently complex shapes; smoothly curving in all 3 dimensions while the structure changes shape. Modeling complex geometry for quantity takeoff, automated machine guidance (AMG), and coordination can be accomplished using AutoCAD® Civil 3D® software with or without the use of Subassembly Composer (SAC). In this advanced class, we create an MSE wall that is based on construction documents. We streamline stepped profile creation, removing a data input bottleneck. We also demonstrate 2 methods for creating MSE wall assemblies and the advantages and disadvantages of using SAC. Moving onto creating the corridor itself, we discuss issues of representing profile steps and how Civil 3D can properly represent necessary detail for MSE walls. After creating the model, we briefly show quantification, visualization, and coordination. All of these steps lead up to exporting the model for AMG to enhance field productivity. At the end of this class a user who knows Civil 3D will be able to easily create a 3D MSE wall. Although this class focuses specifically on MSE walls, these same techniques can be used for any linear structure.

    Key Learnings

    • Use Microsoft® Excel® and macros to streamline data-heavy profile creation
    • Create an MSE wall assembly using standard Civil 3D subassemblies
    • Use a custom subassembly created in Subassembly Composer to create a 3D solid MSE wall
    • Visualize, coordinate, quantify, and export survey surfaces and line work for an MSE wall