Autodesk AUTOCAD 2008 - PREVIEW GUIDE Informations techniques télécharger pdf (Page 147)

Working with Ponds | 137

There are six groups of commands on the Grading menu that you can use to

define ponds and shape them:

■ Pond Settings: Changes settings for contours, slope control lines, and

benches.

■ Pond Perimeter: Draws a pond perimeter, changes its elevation, adds

vertices to the perimeter, fillets the perimeter, and saves and imports

perimeter shapes.

■ Define Pond: Names or renames a pond, defines pond geometry by select-

ing existing polylines or contours, or deletes a pond from the drawing.

■ Pond Slopes: Grades the bank of the pond.

■ Shape Pond: Shapes the pond, by creating the contours, slope control

lines, and the bottom polyline, after you have created the pond slope

design.

■ List/Label Pond: Lists information about ponds and labels them in the

drawing.

To design a detention pond

Steps Use to locate

1 Determine the specific watershed characteristics and

design criteria, including the peak flow rate volume.

2 Draw the pond perimeter polyline. Drawing a Pond Perimeter

3 From the Grading menu, choose Define Pond

➤ By

Polyline to define the pond perimeter polyline.

Defining a Pond Perimeter

from a Polyline

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Autodesk AUTOCAD 2008 - PREVIEW GUIDE Informations techniques Page 147