You can change the flow direction on consecutive parts in a pipe network.
Because some pipe network rules rely on the flow direction assigned to pipes, this command lets you assign direction as needed so that rules can be applied properly.This feature also allows for the display of appropriate flow direction arrows in labels.
The Change Flow Direction command is also useful when other applications using AutoCAD Civil 3D pipe network model data need to be able to determine flow direction within a network.
You may need to change the flow direction of an entire pipe network, or only a portion of a pipe network. Using the Change Flow Direction command, you are prompted to select a path of consecutive parts in a pipe network.
To change the flow in a series of connected parts, select a path by clicking on a starting part, and an ending part within a pipe run.
Changing flow direction can only be performed on a single pipe network at a time. Although you can select structures as well as pipes when using this command, the feature affects pipes only.
To change pipe network flow direction
- Select the pipe network. Click Pipe Networks tab
Modify panel
Change Flow Direction
.A prompt is displayed indicating that you should select the part (pipe or structure) that you want to be used as the upstream starting point in plan view.
- In the drawing, click a pipe or structure in the pipe network to define the upstream starting point for the flow direction change.
A prompt is displayed indicating that you should select the part (pipe or structure) that you want to be used as the downstream ending point in plan view.
- Do one of the following:
- Select a path for the flow direction change by clicking a pipe or structure to define the downstream ending point. You can continue clicking consecutive parts in a pipe network to define the path for the change flow direction.
- You can click Undo at any time during this command to undo the previously selected part and path.
- When you have finished defining the path for the flow direction change, press Enter to end the command and implement the flow direction change on the parts in the selected path.
A prompt indicating that the flow direction has been successfully applied to the part(s) is displayed.
The Flow Direction property value on the Part Properties tab of the Pipe Properties dialog box is changed (from Start to End to End to Start, or from End to Start from Start to End).