To create a pressure network using objects in Autodesk Civil 3D, follow these steps:
1. Create a new pressure network: Go to the "Networks" tab > "Pressure Networks" panel > "Create Pressure Network".
2. Select the object: Choose the object (e.g., polyline, alignment) that represents the pressure network.
3. Define the network properties: Specify the network type, pipe size, and other properties.
4. Add parts: Add pipes, fittings, and appurtenances to the network.
5. Define the network layout: Use the "Layout" tab to adjust the network's geometry and connectivity.
Alternatively, you can also use the "Create Pressure Network from Object" tool to convert an existing object into a pressure network.