You can export Autodesk Civil 3D pipe networks and their associated catchments to edit in Autodesk Storm and Sanitary Analysis.
Important: If a catchment is not associated with a pipe network structure, it cannot be imported into Storm and Sanitary Analysis. You can associate the catchment with a pipe network structure when creating the catchment or by editing the catchment properties.
Restriction: Ensure that pipes or structures you export to Storm and Sanitary Analysis are not named the same even if they are not in the same pipe network. Autodesk Civil 3D allows a pipe and/or a structure to be named the same as a pipe and/or structure in a different pipe network. However, only one part that has the duplicate name can be imported into Storm and Sanitary Analysis, so parts from different networks may become connected to each other. To resolve this issue, use the Pipe Properties or Structure Properties to change the pipe or structure names before using the Edit in Storm and Sanitary Analysis command.