Solids Builder - SWMM Links - Outlet

Outlet are flow control devices typically used to control outputs from storage units.

When you want to define a device as a Outlet, you must add the tool Outlet to the Constructor:

When adding the tool Outlet, fill in your properties, in the tool's properties frame:

In the Constructor, the following properties must be filled in:

• Identification
  • Name - name of the activity
    The point name must follow the naming rules
  • Description - when the name of the activity is not enough to give context to the activity, use the description field
• SWMM
  • Retention Device - YES, if the Weir has a gate that prevents back flow,
    NO, if not
  • Inlet Elevation - Elevation of the initial lower internal generatrix of the conduit
    This is a property that depends on the geometry of the conduit, so it must be tied to its starting point, for example:
    
    
    In the image above, StartInvertElevation is defined in the properties frame of the model:
    
    
• Outlet Type - Method of defining flow (Q) as a function of freeboard depth or head (y) through the outlet
  Can be:
  • FUNCTIONAL / DEPTH - Uses a power function Q = Ay^B where y is the depth of the freeboard above the inlet opening
    In this case, fill in:
    • Exponent - Exponent (B) used for the functional relationship between depth or head and flow rate
    • Coefficient - Coefficient (A) for the functional relationship between depth or head and flow rate
  • FUNCTIONAL / HEAD - Uses a power function Q = Ay^B where y is the load difference at the input
    In this case, fill in:
    • Exponent - Exponent (B) used for the functional relationship between depth or head and flow rate
    • Coefficient - Coefficient (A) for the functional relationship between depth or head and flow rate
  • TABULAR / DEPTH - Uses a tabulated curve of flow versus freeboard depth values
    In this case, fill in:
    • Rating Curve - rating curve containing the relationship between depth or head and flow rate
  • TABULAR / HEAD - Uses a tabulated curve of flow versus load difference values
    In this case, fill in:
    • Rating Curve - rating curve containing the relationship between depth or head and flow rate