2.0

Table Of Contents
Calculating Pipe Values
497
Displaying the Culvert Calculation Messages
There is a Messages button in the Culvert Design dialog box. Use this command
to display warnings or error messages data in your currently configured ASCII
text editor.
To display the culvert calculation messages
1 In the Culvert Design dialog box, click Messages to display the messages in a
text editor.
From here, you can save or edit the output data.
Clearing the Calculator
In the Culvert Design dialog box, there is a New button. Use this command to
clear this dialog box and start a new calculation.
To clear a calculator dialog box and start a new calculation
1 Save the existing data, if necessary.
2 In the Culvert Design dialog box, click New to display the New dialog box.
3 Click Yes to confirm that you want to delete the old data from the calculator.
The text boxes in the Culvert Design dialog box clear, and you can start
entering new data.
Calculating Pipe Values
You can use the pipe calculators to solve for unknown pipe values, such as
flowrate and depth of flow. When calculating pipe values, a friction factor or
roughness coefficient is used to compensate for the effect of the roughness of
the pipe material. Autodesk Civil Design includes pipe calculators that use the
following formulas: Manningîš’s, Hazen-Williams, and Darcy-Weisbach.
Choose the pipe calculator to use based on which equation you want to use and
which shape of pipe you are calculating values for: circular, rectangular,
elliptical, or custom.
To use the calculators, choose a value to solve for, and then type in all of the
other known data: