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Table Of Contents
Chapter 5 Working with Hydrology Commands
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7 In the Diameter box, type a value for the diameter of the pipe (unless you are
solving for the diameter).
You can also click Select and pick a diameter from the Pipe Selections dialog
box.
The box in the top right area of the dialog box displays a graphic of the
currently defined pipe. Based on the values that you entered, information about
the pipe is calculated and displayed at the bottom left of the dialog box. This
information is for display only and cannot be edited.
NOTE
If the data you entered has an error, the pipe graphic image does not
display. Check for an error message at the bottom of the dialog box.
8 Click OK to exit the dialog box.
Specifying a Length
You can specify a pipe length by picking a beginning and ending point from
your drawing.
To specify a pipe length
1 In the Darcy-Weisbach dialog box, click the Select button next to the Length
box. The current dialog box closes temporarily and the following prompt is
displayed:
Length – First point (or Entity):
2 Select the first point from the drawing.
The following prompt is displayed:
Length – Second point:
3 Select the second point from the drawing.
4 Press ENTER when you have finished selecting points in the drawing.
The calculator dialog box displays and the value of the length you selected is
displayed in the Length text box.
5 Click OK to exit the dialog box.
Specifying a Headloss Value
You can specify a headloss value by selecting points or an object from your drawing.
Headloss is the amount of energy, or head, that is lost due to friction factors.
To specify a headloss value
1 In the Darcy-Weisbach dialog box, click the Select button next to the Headloss
text box.
The current dialog box closes temporarily and the following prompt is
displayed:
Length – First point (or Entity):
2 Do one of the following to select the headloss length:
n
Select two or more points to define the length, pressing ENTER when you
have finished selecting points.
n
Type Entity, and then select the entity from the drawing.