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Set System component

A system component is a key component that owns systems. Read more about the significance of system components here: Systems Datamodel and Terminology.

As there is no concept for System component in IFC 2x3, dRofus uses two ways of setting the system components for you. To keep total control of which occurrences that will be set as system components for imported systems you can manually classify Items with a system classification. Or, you can let dRofus automatically promote the first occurrences within the system as system component.

Set System component manually

In order to control which occurrences are set as system components its recommended that you use a classification in dRofus to define which occurrences are set as system components. First you need to use or create a classification that are active for Items, Systems and is numbergiving. In the example below we have created an example called “System classification”, however, this could be replaced with a project, national or international classification.

Note that you need administration access to create new classifications. Read more on setting up and edit classifications here Edit Classification Setup

When Items are created from the IFC file (Create Items in dRofus) you can start classify the Items. In the example below we have created a simple classification structure with two groups, E - Electrical and M - Mechanical.

When we classify e.g. Item 0303.112, we determine that the occurrence of this Item shall be the system component in all systems in which it is a member. If there are two occurrences in the same system with Items that are classified, dRofus will pick the first occurrence in the list of members in the IFC file and promote it as system component.

In the below image we can see the result of an import of occurrences and systems. Prior to the occurrences import we classified three Items as M - Mechanical. The result is three system components M.001 - M.002, with systems and components in the system browser hierarchy.

  1. Classification groups. In the example above we created a system classification which now are visible in the System module.

  2. System components

  3. Column showing what systems the occurrences are members of

  4. List of occurrences/components.

Automatic setting of System component

If no Items have been assigned a system classification dRofus will promote the first member sin the IFCsystem as system component. The image below show IFCsystems and their components.

Screenshot from BimVision 2.24

In the above image we got in total 14 systems. The first system (“Mechanical Exhaust Air 8”) is expanded so we can see all members of the system. When importing the first system, the first member (“M_Exhaust Unit with Cabinet - …” highlighted in red) will be promoted as system component in dRofus. The same logic will be applied to all 14 systems.

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