IFC aggregates

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  • Aggregate meaning
    • a whole formed by combining several separate elements

In IFC, it is possible to describe how a particular element is made out of many sub elements of the same type. This description is called an "aggregation".

Types of elements that represent objects, like walls and doors, can be aggregated, or collected.

Examples:

  • Roofs
    • Roofs can consist of many beams, insulation layers, fixings, and coverings.
  • Stairs
    • Stairs may include multiple stair flights, some landings, and railings.

At2 Tip.pngNote that aggregations only apply to elements of the same type. You cannot mix element types. For example, you cannot say a space consists of furniture - as the space element is a different type of element to the furniture element.

How to create aggregates in:

  • BlenderBIM At2 Fixme.gif
  • FreeCAD At2 Fixme.gif


Further reading: