You can create a pipe network using the Network Layout Tools.
To automatically reference station and elevation data for the pipe network, you can associate the pipe network with an alignment and a surface.
Tutorial Exercise: Creating a Pipe Network
- Click
Find
, or in the Prospector tree, expand the Pipe Networks collection, then right-click the Networks collection, and click Create Pipe Network By Layout. - In the Create Network By Layout dialog box, in the Network Name field, enter a name for the pipe network.
To name the pipe network, select a default name from the naming template, or enter a new name.
- In the Network Description field, enter an optional text description for this pipe network.
- In the Network Parts List field, select a parts list or accept the default parts list for this pipe network.
- To view or change the default layers that will be assigned to various pipe network parts as they are created, click Layers to open the Pipe Network Layers dialog box.
- To reference a surface and/or an alignment, select the item from the list, or click to select a surface and/or alignment in the drawing.
- Optionally, you may select label styles for pipes and structures added to the pipe network. When <none> is specified, no labels are added to the items, but you can add labels later if desired.
- Click OK in the Create Network By Layout dialog box. The Network Layout Tools toolbar is displayed, and the pipe network name is displayed in the Pipe Networks collection on the Prospector tab.
- On the Network Layout Tools toolbar, select the desired parts (pipes and structures) in the Pipe List and Structure List. For example, select 48-inch Concentric Catch Basin for a structure, and 12-inch Concrete Pipe 1 US Imperial for a pipe.
- Select the types of pipe network objects you want to insert by clicking the Down Arrow button next to
Draw Pipes And Structures and selecting one of the following: - Pipes and Structures. Inserts pipes and structures during the same command operation. This is the default command when creating a new pipe network.
Pipes Only. Inserts just one or more pipes (without inserting structures) into the pipe network. 
Structures Only. Inserts just one or more structures into the pipe network, without inserting any pipes.
Pipes and Structures is the default active layout command. The initial prompt (by default) upon entering the layout command is Specify the structure insertion point:
Upon reopening the layout toolbar, the default command is the last command that was used.
- Click the Toggle Upslope/Downslope button to set the direction of the pipe networks part(s) to either a positive slope value or direction (upslope) or a negative slope value or direction (downslope). This button acts as a toggle. Downslope is the default. When the downslope
icon is displayed, each new pipe that is inserted will slope downstream from the previous part. When the upslope 
icon is displayed, each new pipe inserted will slope upstream from the previous part. - Begin drawing the pipe network by specifying the insertion point for the first part (pipe or structure) of the pipe network. Note: If you are in Draw Pipes And Structures mode, the first click defines the first structure insertion point, as well as the starting point of the first pipe object. The second click specifies the end of the first pipe object, and inserts a new structure object connected to that pipe. Subsequent clicks specify insertion points for subsequent pipes and structures until you end the command by pressing Enter. If you are in Draw Pipes Only mode, each click specifies the insertion point for a pipe end (a pipe start point or end point). If you are in Draw Structures Only mode, each click specifies the insertion point for a structure.
- Specify the next insertion point in the drawing.
- When you finish drawing the pipe network, press Enter to end the command.
After you create a pipe network, you may want to refine parts of it. For example, you may want to add a new pipe or structure, remove parts, move parts, or add labels.