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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Customizing with Subassembly Composer

Add another point element, which will be the top right corner of the subassembly. Import into Civil 3D Now you can use the slanted curb subassembly like a regular curb subassembly. Subassembly Composer has five sections: He has worked in construction management subawsembly design since and has implemented and trained companies on Civil 3D compiser the past year.

Notice that here you have to use both input and output parameters. This point will be used as the origin and as a reference for positioning the next point. Name this parameter TopWidth with no spaces.

Drag and drop an Auxiliary point and place it below the True label. Set its properties the same way you did for the previous point. 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.

For this link there is no need to modify anything else. Conclusion Now you have two parametric subassemblies made from scratch.

Customizing with Subassembly Composer | AUGI – Autodesk User Group International

Slanted curb in Subassembly Composer At this point the subassembly is ready and it should look like Figure 3. This makes the way Subassembly Composer works seem a little weird, so when you design a subassembly it is always a good idea to start by drafting an outline by hand.


Now that you know how to use Subassembly Composer, go ahead and create your own subassemblies, draw them in your mind, then on paper, and then build the subassembly. Add another Output Parameter. For this point there is no need to modify anything else. From the toolbox in the Miscellaneous category, drag Set Output Parameter and drop it into the flowchart. The steps below outline the process to create a simple slanted subassembly.

All of this information can help you to reverse engineer these subassemblies, have a better grasp of how they work, and create parametric subassemblies in Subassembly Composer. In Subassembly Composer you can also create subassemblies that work with targets. PI; this will convert the Atan into degrees. Add a link component to the flowchart; no need for points here because the link will connect to existing points. I hope these two exercises shed some light on how to use Subassembly Composer.

Subassemblies are the building blocks for assemblies in Civil 3D, and we can look at assemblies as cross sections for roads, rivers, embankments, etc. 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.

For display name, type Top Width. Customize it and make it yours! Drag and drop another point component. Subassembly Composer also requires communicating with the program using its own language, almost like coding; in this case it uses.

For Delta Y enter 0. The direction is input because it is an input parameter, meaning that the user will input the value. Set the side to Right. 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. From the toolbox, drag and drop a Decision operator, which is in the Workflow category.


In this article we will see how to use the Subassembly Composer; we will look at its components and create two subassemblies to tutoiral how it works. At this point the subassembly is closed, but it is empty. Click Create Parameter to create a new parameter. Set Output Parameter to Slope, which is one of the output parameters that was created in the packet settings. For Output Parameter select Atan and for value, type Math.

Atan Slope ; this will give compoaer the slope in radians. This point will use a point code so a feature line can be created when connecting multiple sections using this subassembly.

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

Add another Output parameter from the toolbox. Packet Settings is where you create and set up the subassembly parameters, composef, and so on. Add an output parameter. Switch to the Insert tab and from the Import panel select Import Subassemblies. The process is similar in that you have to create parameters and use those parameters to define targets.

Think about the subassemblies you use when building corridors.

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