IfcOpeningElement
What is IfcOpeningElement?
IfcOpeningElement represents a void or hole cut through a building element such as a wall, slab, or roof. Openings are used to accommodate doors, windows, ducts, pipes, and other penetrations. The opening itself is a subtractive element — it defines the shape to be removed from its host element.
Common Properties
Properties commonly found on IfcOpeningElement elements in IFC models.
Real-World Usage
Openings are critical for MEP coordination — every duct, pipe, and cable tray that passes through a wall or slab requires an opening. Construction teams track opening sizes and locations to ensure they match MEP routing and structural requirements.
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Get started freeRelated Entity Types
IfcWall
IfcWall represents a vertical construction element that bounds or subdivides spaces. Walls are one of the most fundamental building elements in any IFC model, defining the physical envelope and internal partitioning of a building. IfcWall can represent both load-bearing structural walls and non-load-bearing partitions.
Building ElementIfcDoor
IfcDoor represents a construction element that is used to close an opening in a wall or partition. Doors provide access between spaces and carry properties about their operation type (single swing, double swing, sliding, revolving), fire rating, and accessibility compliance.
Building ElementIfcWindow
IfcWindow represents a construction element placed in a wall opening to allow light and ventilation. Windows carry properties about their glazing type, thermal performance, operation type (fixed, casement, sliding), and dimensions.
Building ElementIfcSlab
IfcSlab represents a horizontal construction element that forms the floor, roof, or landing of a building. Slabs can be classified as floor slabs, roof slabs, landing slabs, or base slabs (foundations). They are typically the largest elements by area in a building model.