Wet Wells

Wet wells are used by InfoSewer to model the storage of sewage water within a lift station.  The capacity of a wet well is only evaluated during an EPS/Dynamic model run.  The only facility that can leave a wet well is a pump.

This page includes the following topics:

Create a Wet Well

To create a wet well, click on the add wet well icon or from the Create menu, click Add Wet Well.

Once the command is initiated, a crosshair cursor will appear.  Select the location of the new wet well by left mousing clicking anywhere on the map display.

Once the wet well has been located, a dialog box will become present requesting the ID number of the wet well and description for the wet well being created.  Once these date are entered, press OK to end the command.

Types of Wet Wells

There are two different types of wet wells the user is able to input into InfoSewer.  

• Cylindrical -A cylindrical wet well has a constant diameter in relation to its high and low water levels.  Via the Modeling option under the Attribute Browser, enter the following:
  
  • Bottom Elevation -The elevation (above sea level) of the bottom of the wet well, ft (m).
  • Initial Water Level - The height of water above the bottom of the wet well (ex. 12 ft.) when the simulation is to begin, ft (m).
  • Diameter - The diameter of the wet well, ft (m).
  • Maximum Level- The highest allowable water level (ex. 22 ft.), ft (m).
  • Minimum Level - The lowest allowable water level (ex. 3 ft.), ft (m)

• Variable Area - A wet well where the volume changes with respect to height of sewage in the wet well.  The only way to model a variable area wet well is to create a curve that represents the relationship between height and volume.  Via the Modeling option under the Attribute Browser, enter the following:
  
  • Curve - The curve assigned to the wet well for an EPS.  Click here to see an example curve.

Edit a Wet Well

Graphic Edit  - To edit the wet well graphically, use the Move Node icon to select the wet well.  Once selected, left mouse click on top of the node and hold the button and drag the mouse at the same time.  A red rubber band will appear showing the user where the node will be located.  Once the node is moved to its new location, release the mouse button.  The node is now relocated.  (Note:  If the user has not enabled "Auto Length Calculation" under the Tools -> Preferences menu, all pipes connected to that node will not have their lengths automatically changed.)

Data Edit - To edit the data related to a wet well, first select the node using the select tool.  Once selected, the user is able to edit the database data related to the storage node under the Node tab of the Attribute Browser dialog box.

Delete a Wet Well

To delete a wet well, from the Edit menu, select Delete Node or select the Delete Node icon.  InfoSewer will prompt the user to confirm deletion.  (Note:  All links attached to the node being deleted will also be deleted.)  The node and associated links are deleted graphically but can still be recalled from the database using the recall command.  However, if Auto Database Packing is enabled (Tools -> Preferences), then any element deleted is permanently deleted from the database and cannot be recalled.

Recall a Deleted Wet Well

To recall a deleted wet well, go to Utilities menu, point to Recall, then select Node.  In order to perform the recall, the user must know the ID of the node that was deleted.  If the ID is unknown, select the Show Deleted Nodes command from the Recall menu to see a list of ID's that have been deleted.

The Recall command is used to restore/or undelete network components that have been deleted. This command will not work if the user has enabled Auto Database Packing option (Project Preferences). Recall is found under Utilities / Recall. Recalled components will be redrawn with their graphical properties (node size, pipe connectivity and shape) at the time of deletion. All database values assigned to those components will be restored.