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Chapter 5 Working with Hydrology Commands
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A message appears at the bottom of the dialog box if an error is made when
entering data. If there is more than one error, an error message dialog box is
displayed.
You can use the calculators in two different ways, independently or nested.
Each calculator has its own command you can use to run the calculator and
save the values to a file. In addition, you can access the required calculators
from within other dialog boxes. For example, you can access all of the structure
calculators from the Outflow Editor because you use the Outflow Editor to
design inflow and outflow structures for your ponds. But you could use the
calculators independently, save the values to files, and then load the files when
youre using the Outflow Editor.
Calculating Channel Values
Autodesk Civil Design has channel calculators that you can use to calculate
channel dimensions, flow rates, slope, Mannings n, and/or depths of flows, as
well as to design inflow and outflow structures for ponds. You can design
rectangular and trapezoidal channels, and you can design channels with user-
defined radii and slope values with the Advanced Channel Calculator.
The channel calculators use Mannings n coefficients to define the channel
friction factors.
Calculating the Rectangular Channel Values
Use the Rectangular Channel Calculator to solve for values for rectangular
channels. The following illustration shows rectangular channel values:
Rectangular channel values