Pipe network parts catalogs are a convenient mechanism for standardizing the specifications of pipes and structures across project drawings. But it is important for all users to understand how Autodesk Civil 3D consults these catalogs and updates drawings during the editing process. In any environment where multiple users are sharing drawings, they should follow a standard procedure for maintaining and distributing the pipe network parts catalog to avoid unwanted part changes in drawings.
All parts catalogs in use by a design team should be identical, and they should be stored in consistent locations. If this is done, the parts catalogs are referenced in a predictable way, and it is easier to find and update them when required.