Junction nodes are points placed at the intersection of two or more pipes (intersections or tees). Junctions are used to represent points of water consumption or inflow, points where specific analysis values (e.g., pressure, concentration) are desired, and at points where pipe attributes (e.g., diameter, material) change. Junction nodes must have their elevation above datum (e.g., sea level) specified in order for pressure computations to be meaningful.
How do I...
To create a junction node, do the following:
Click on the InfoWater Pro Ribbon in the Edit Group using the → Insert Command dropbox.
Select the Insert Junction icon from the → Insert Command dropbox
When the Insert Junction command is the active command it will be highlighted in Blue as shown:
Once the command is initiated, select the location of the new node by left mouse clicking anywhere on the map display. Suggest a new ID and/or a description on the Junction Identification dialog box and click on the OK button to accept the ID and create the junction. The junction should visually appear at the specified location. If the insert location is near an existing model pipe the software will ask if you wish to insert the junction into that pipe. If you wish to split the pipe, the Junction Identification dialog box for the new junction and the new pipe will appear in a pop up window.
You can also use the Digitize Network iconfrom the → Insert Command dropbox to create a pipe and node network "on the fly". Once digitized, the user is able to add relevant modeling data in the Model Explorer - Attribute Tab window or via the DB Editor.
Graphic Selection - To select a junction node for data edit do one of the following:
Choose the Select icon from the Model Explorer - Attribute Tab window and click on the specific Junction or select the InfoWater Pro Ribbon in the Edit Group using the → Select icon
If a Junction has been prior selected and is a part of the Browse history, it can be re-selected by choosing it from the Browse-History section of the Model Explorer - Attribute Tab window.
Data Edit - To edit the data related to a junction, first select the junction using the tools above. Once selected, edit Junction related data by adding/modifying the fields in the Model Explorer - Attribute Tab window.
Additionally modifications may be done by editing the DB Tables that may be accessed from the InfoWater Pro Ribbon in the Edit Group using the → DB Editor icon.
Graphic Edit - To edit the node graphically do one of the following:
From the InfoWater Pro Ribbon in the Edit Group using the → Edit Command dropbox iconselect the Move Node command from the dropdown . Left click on the mouse and hold the left click down on the junction to select it. With the junction highlighted move the node to the desired position while keeping the left click mouse button depressed. Once in the desired location, release the left mouse button and the node location will be updated to the new location.
When the Move Node command in the InfoWater Pro Ribbon in the Edit Group → Edit Command dropbox is the active command it will be highlighted in Blue as shown:
If the user has not enabled "Auto Length Calculation" checkbox under the InfoWater Pro Ribbon in the Project Group using the Preferences icon and the Operations tab, all pipes connected to a node moved will not have their lengths automatically changed.