Multiple Outlet Design attaches multiple outlet structures to a detention pond and computes the stage-discharge data. All design parameters are stored in a combo outlet file (.COT). This command allows you to add, edit and remove outlet structures attached to a pond, and you can see how different combinations of structures affect the stage-discharge calculation. There are five types of outlet structures: culvert, drop pipe, orifice, weir and user defined stage-discharge curve. Please refer to the documentation of Culvert Design, Drop Pipe Spillway Design, Orifice Design, Weir Design and Input-Edit Stage-Discharge for the details.
From the Structure menu in the Hydrology Module, choose Multiple Outlet Design command to open the design dialog. You need to specify an existing or a new combo outlet file (.COT) to load it into the design dialog. The dialog has two edit fields: Outlet and Detention. Outlet field displays a list of outlet structures that are attached to the detention pond. By highlighting a structure, you can edit its parameters and see the stage-discharge calculations. In the Invert Elev box, type the absolute elevation at which the highlighted structure will be attached. The attachment point for a structure is at the bottom of the structure. In the Detention field, you can specify the base elevation and the water surface elevation of the detention pond, and the total discharge will be calculated and displayed.
Click on Add button to display the New Outlet Structure dialog.
Enter the structure name and select a structure type,
then click the OK button to display the outlet design dialog for that
structure. Configure the structure in the design dialog and then click
OK to exit the dialog and come back to the main dialog, which
highlights the new structure and indicates its parameters and the
stage-discharge result.
The Edit and Remove buttons allow you to edit and remove the highlighted structure. The Stage-Discharge Result button computes the discharges at each stage from the minimum water elevation to the maximum, and displays the result in the Stage-Discharge Result Dialog. The Report button reports the design parameters and the discharge results in the standard Carlson report display window, from where the information can be edited, saved, and printed to a printer or to the screen. The Load button allows you to load other combo outlet files (.COT) for editing. The Save and SaveAs buttons save the current design parameters to a outlet file.
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| Multiple Outlet Design Dialog |
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| New Outlet Structure Dialog |
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| Stage-Discharge Result Dialog |
Multiple Outlet Design dialog: Fill in values.
Pulldown Menu Location: Structure > Multiple Outlet Design
Keyboard Command: poutlet
Prerequisite: None
File Name: \lsp\cntr_grd.arx