@rohanrajan_hms
The Assembly feature class in an Utility Network domain, is a conceptual representation that would contain other physical features.
- Assembly—Represents point features that contain other features. As with device features, assembly features are compact features, but they differ in that assemblies contain other significant devices. Assemblies are useful to show a single symbol on the map yet model the internal features and their connections. You can view the internal features of an assembly on the map or in the diagram view. Examples of assembly features are switchgear, transformer banks, and pump assemblies.
Physical Assets in a domain network are typically stored in device, line and junction feature classes. There are instances where an organization may not have the assembly details or the desire to model all the components. In that case the entire 'enclosure' (which is physical) is modelled as the assembly (leaving out the internal physical details).
Other supporting physical assets are modelled as part of the structure network. Structural attachments are typically stored in boundary, line and junction feature classes.
Ayan Palit | Principal Consultant Esri