- Design_project;
- Ducting_component;
- Electrical_component;
- Equipment;
- Equipment_breaching;
- Equipment_trim-piping;
- Externally_defined_user_defined_attribute_value;
- Functional_design_view;
- Functional_plant_item_satisfaction;
- Hierarchically_organized_collection;
- Hvac_component;
- Hvac_ducting;
- Installed_physical_design_view;
- Instrument;
- Instrumentation_and_control_component;
- Insulation;
- Jacketed_piping;
- Material_specification_selection;
- Material_specification_subset_reference;
- Offline_instrument;
- Physical_design_view;
- Piping_spool;
- Piping_spool_assignment;
- Piping_system_component;
- Planned_physical_plant_item;
- Plant_item;
- Plant_item_collection;
- Plant_item_definition;
- Plant_item_design_view;
- Plant_item_instance;
- Plant_item_location;
- Plant_item_weight;
- Plant_volume;
- Process_ducting;
- Project_design_assignment;
- Relative_item_location;