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Table Of Contents
Chapter 6 Working with Pipes
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6 In the Runoff Method Selection dialog box, you can open five different
methods for computing a runoff value by selecting one of the following from
the Selection list:
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Select Rational Method to open the Rational Method dialog box to
accommodate TR-20 method runoff calculations.
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Select TR-55 Tabular to open the TR-55 Tabular Hydrograph Method dialog
box to accommodate TR-55 tabular hydrograph method runoff calculations.
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Select TR-55 Graphical to open the TR-55 Graphical Peak Discharge Method
dialog box to accommodate TR-55 graphical peak discharge method runoff
calculations.
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Select TR-20 Method to open the SCS TR-20 Unit Hydrograph Method dialog
box to accommodate TR-20 method runoff calculations.
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Select Inflow Hydrograph to open the Input Hydrograph dialog box so you
can select an existing inflow hydrograph file. The peak discharge from the
hydrograph is extracted for use as the runoff flow value.
NOTE
When performing run-off calculations using the TR-20 Method, the
recommended units are Imperial. Input the rainfall in inches and the area
in square miles or acres. If the units for rainfall are something other than
inches, then the DST file must match the rainfall units.
7 Click OK to return to the Runoff dialog box. The runoff flow value displays in
the Flow text box. You can add surface runoff flow contributions at each node
or pipe segment.
8 Click OK to return to the Pipes Run Editor. The runoff flow value displays in the
Surface Flow column. In addition, the corresponding Surface On/Off column
displays the number 1 to indicate that the use of a surface runoff flow value is
selected on. If a surface runoff flow value is not used, the number displayed in
the Surface Flow column is 0 (zero).
Displaying the Data in a Text Editor
To display the pipe data in a text editor
1 From the Pipes menu, choose Conceptual Plan
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Edit Data.
2 Do one of the following:
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Select the run with your pointing device.
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Press ENTER to open the Defined Runs dialog box and select the run, then
click OK.
All pipe runs are stored in a single Pipeworks database called pipeworks.mdb.
After you select a run, the Pipeworks database is automatically searched for the
run with the specified name.
NOTE
The .mdb file is a Microsoft Access file, so you can view the .mdb file using
Microsoft Access.
After the pipe run is found, the Pipes Run Editor dialog box is displayed with
the selected pipe run data. For more information, see Changing the Pipe Run
Editor Settings in this chapter.
3 Click the Print View button to display the current pipe run data in the ASCII
text editor configured for your system.