To export a pipe network from Civil 3D to Hydraflow Storm Sewers:
1. Create and design the pipe network in Civil 3D.
2. Go to the "Analyze" tab > "Hydraflow" panel > "Export to Hydraflow".
3. Select the pipe network to export.
4. Choose the export options and settings.
5. Export the network to Hydraflow Storm Sewers.
