- On the Network Layout Tools toolbar, click
Pipes Only or 
Pipes and Structures. - If you clicked Pipes and Structures mode, specify the insertion point for the structure.
If you clicked Pipes Only mode, specify the first pipe point.
- Enter c (curve), and press Enter to begin specifying the curve.
- Do one of the following:
- Specify the second point of the curve. Specify the end point for the curve.
- Enter r (radius) and specify a radius. Specify a curve direction, either clockwise or counter clockwise. Specify the end point for the curved pipe.
- Press Enter to end the command.