Parts Lists in Civil 3D are essential for creating and managing pipe networks and pressure networks. A parts list is a collection of pipe and structure components, such as pipes, manholes, fittings, or appurtenances, that can be used in a project. These lists define the sizes, materials, and styles for network design, ensuring consistency and standardization.

Key Concepts of Parts Lists
1. What is a Parts List?
A parts list organizes and standardizes pipe and structure components available for use in a project.
It includes detailed specifications such as size, material, and associated styles for both gravity pipe networks and pressure pipe networks.
2. Types of Parts Lists
Gravity Pipe Network Parts List:
Includes pipes (e.g., concrete, PVC) and structures (e.g., manholes, catch basins).
Pressure Network Parts List:
Includes pressure pipes (e.g., HDPE, ductile iron), fittings (e.g., bends, tees), and appurtenances (e.g., valves, hydrants).
Working with Parts Lists
1. Accessing Parts Lists
From the Toolspace:
Open the Settings tab in the Toolspace palette.
Expand Pipe Network or Pressure Network, then Parts Lists.
From the Ribbon:
Go to Home Tab > Create Design Panel > Pipe Network or Pressure Network > Parts List.
2. Creating a New Parts List
Right-click on Parts Lists under the desired network type in the Toolspace.
Choose New to create a new parts list.
Assign a meaningful name (e.g., “Storm Sewer Parts List”).
3. Adding Components to a Parts List
Add Pipe Types:
Select the Pipes tab.
Click Add Part Family to include pipe types (e.g., RCP, PVC).
Expand the family to add specific sizes (e.g., 300mm, 450mm).
Add Structures (Gravity):
Go to the Structures tab.
Click Add Part Family to include structures (e.g., manholes, inlets).
Add Fittings and Appurtenances (Pressure):
Use the Fittings and Appurtenances tabs to add bends, tees, reducers, or valves.
4. Setting Styles for Parts
Each part in the list can have styles assigned for plan, profile, and section views:

Select a Part in the list.
Specify:
Plan View Style: Controls how the part appears in 2D views.
Profile View Style: Defines appearance in longitudinal profiles.
Section View Style: Determines how the part looks in cross-sections.
5. Editing an Existing Parts List
Right-click the parts list and select Edit.
Modify parts, sizes, or styles as needed.
Add or remove parts to update the list.
6. Assigning Materials and Sizes
Select a part and assign its material (e.g., PVC, concrete).
Add specific sizes to match design requirements (e.g., pipe diameters, fitting angles).
Using Parts Lists in Design
1. For Gravity Networks
Use the parts list when creating pipe networks for stormwater, sanitary sewer, or drainage systems.
Select pipes and structures from the predefined list during network layout.
2. For Pressure Networks
Use the parts list to create pressure networks for water distribution or irrigation systems.
Choose pipes, fittings, and appurtenances from the list during design.
Best Practices