To add or modify pipelines

Sketch pipelines in a model or proposal. Pipelines are independent of terrain. They do not drape on the surface but are placed under it. You can adjust pipeline elevation offset settings or directly modify pipeline elevation.

Pipelines snap together at their ends, and also snap to pipeline connectors.

To add pipelines

1. Click .
2. Click once on a pipeline style to select that style.
   Note:

   • If you want to use different pipeline styles than what are shown in the Select Draw Style catalog, you can create and edit pipeline styles using the Style Palette. See About editing styles for more information.
   • Once you have sketched a pipeline, you can modify its style. See To apply styles to individual features for more information.
3. Click the starting point for the pipeline and click again to place a point for each bend.
4. Double-click to finish the pipeline.

To adjust pipeline elevation using the Properties Palette

1. With the entire pipeline selected, display the Properties Palette.
   
2. To place the pipelines underground, enter a negative value for Elevation Offset.
3. To assign a network to the pipelines for later use in AutoCAD Civil 3D, enter a value for Network Name, in the Pipe section.

To adjust pipeline elevation using gizmos

1. Disable the selectability of all other features.

   Click to display the Model Explorer, and click for each layer except pipelines. When a layer is unlocked (), it becomes selectable.

2. Reduce the surface opacity so you can see the underground structures.

   Click Visual Effects tab > Appearance panel and move the Surface Opacity slider to the left.

3. Select the pipeline to adjust.
4. Do one of the following:
   • Move the entire pipeline up or down.

     

   • Adjust individual vertices to move sections of the pipeline up or down.

     

Note: You can assign a network attribute to the pipeline in the Properties Palette. Then, when you import the pipelines, you can add them to an existing network of the same name in Civil 3D. Right-click the pipeline, click Properties, and under Pipe, enter a name in the Network Name field.

Sharing Pipelines with AutoCAD Civil 3D

You can export pipelines to IMX format, and then import the IMX file into AutoCAD Civil 3D.

AutoCAD Civil 3D reads the elevation value from either the pipeline vertexes or the terrain. Pipelines you create are initially 2D. If you edit any pipeline vertex, that pipeline becomes 3D. If the pipelines you export are 2D, export the entire model to ensure that the terrain is exported, which allows AutoCAD Civil 3D to find the elevation of the pipelines. If the pipelines are in 3D, you don't need to export the terrain.