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Table Of Contents
Chapter 5 Working with Hydrology Commands
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To calculate culvert size and shape
1 From the Hydrology menu, choose Culvert Calculator to display the Culvert
Design dialog box.
TIP
Click Load to load an existing culvert file to view or modify it. Or, you can
click New to clear existing data from the Culvert Design dialog box.
2 Configure the culvert settings. For more information on configuring the culvert
settings, see the following section, Changing the Culvert Settings.
NOTE
You should always check the culvert settings. This is where you specify if
you want to check for inlet control, outlet control, or optimum. It is also
how you specify the entrance condition for the culvert and specify the
number of barrels that will be used.
3 From the Barrel Shape list, select the type of culvert that you want to size. The
available shapes are Circular and Box.
4 In the Tailwater box, type a tailwater depth. This is the depth of water above the
outlet elevation.
You can also click Select to display the Tailwater Editor dialog box.
NOTE
Error messages are displayed at the bottom of the Culvert Calculator. You
can see a summary of error messages by clicking the Messages button.
5 In the Length box, type a length for the culvert.
You can also click Select to specify the length by selecting points on the
drawing.