Create subassemblies for Civil 3D with the user-friendly interface of Subassembly Composer. The Autodesk Subassembly Composer has been. When it comes to corridor modeling, Civil 3D provides a large number of subassembly parts right out of the box. Since these parts are also. One of the most common Sub-Components I get asked about is the Subassembly Composer for Civil 3D and so I am writing this helpful guide.

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Use Subassembly Composer – Create a Civil 3D Subassembly

From the toolbox in the Miscellaneous category, drag Set Output Parameter and drop it into the flowchart. Preview is clmposer you see how the subassembly looks as you are putting things together. Switch to the Insert tab and from the Import panel select Import Subassemblies.

In Subassembly Composer you can also create subassemblies that work with targets.

Hand-drawn schematics Figure 6: Add a point below this new auxiliary point. When we customize a program icvil a graphical user interface it usually is because we want to modify the way things look and behave.

To understand what Subassembly Composer does, we need to review how subassemblies work, what their components are, and what they do; specifically, we need to understand codes, points, links, and shapes. Add another Output parameter from the toolbox.

And because we have two different options, we will use a conditional operator. Notice that here you have to use both input and output parameters. Add this subassembly to the Custom Subassemblies palette the same way you did with the other subassembly.

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Hover over one of the tabs in the tool palette, right-click and select New Palette. Drag and drop an Auxiliary point and place it below the True label. Figure 5 shows the schematics of what we want to do and how it will look. Add a link component to the flowchart; no need for points here because the link will connect to existing points. The display name can have spaces and that is how it is going to display in Civil 3D. All of this will make more sense once we start working with Subassembly Composer in the following exercises.

These subassemblies are rather simple, but I think you can see the potential of Subassembly Composer. Subassembly parts Figure 1 shows the basic anatomy of a subassembly with codes, points, links, and shape.

Use Subassembly Composer – Create a Civil 3D Subassembly – EnvisionCAD

Flowchart is where you lay out the workflow: Constant Length and Varying Slope Subassembly This subassembly works similar to the LinkWidthAndSlope generic subassembly, but this one keeps the length constant regardless of the slope. The steps below outline the process to create a simple slanted subassembly. Subassembly Composer also requires communicating with the program using its own language, almost like coding; in this case it uses.

For the output parameters there is no need to type in a display name because the user will not be able to edit these values. Set its properties the same way you did for the previous point. Auxiliary points are used as references for other points and they are not shown in the subassembly.

Composser display name, type Top Width. You can now save the file and close Subassembly Composer. By doing this we are converting the grade value into a slope value. Now the subassembly is ready and it should look like Figure 8. At this point this value is unitless—the units will depend on the units you use in your drawing. For Output Parameter select Atan and for value, type Math.


Some of them use targets to override slopes, widths, etc. Add a point component by dragging it from the toolbox and dropping it into the flowchart window. Add another Output Parameter. Add another point element, which will be the top right corner of the subassembly.

PI; this will convert the Atan into degrees. This will be the origin and insertion point.

Customizing with Subassembly Composer

Set the side to Right. At this point the subassembly is ready and it should look like Figure 3. In AutoCAD we have been doing this for years by using workspaces containing specific combinations of tools, user profiles with specific configurations for system variables, and templates with pre-existing objects and styles. Packet Settings is where you create and set up the subassembly parameters, targets, and so on.

Set a default value for this parameter of 0. Save the file and close Subassembly Composer. At this point you have already calculated all the parameters you need, so now it is time to create a point and a link using those parameters. Home Articles Customizing with Subassembly Composer.