The type of construction action to the object, e.g. new construction, renovation, refurbishment, etc.
A building represents a structure that provides shelter for its occupants or contents and stands in one place. The building is also used to provide a basic element within the spatial structure hierarchy for the components of a building project (together with site, storey, and space).NOTE Definition from ISO 6707-1: Construction work that has the provision of shelter for its occupants or contents as one of its main purpose and is normally designed to stand permanently in one place.A building is (if specified) associated to a site. A building may span over several connected or disconnected buildings. Therefore building complex provides for a collection of buildings included in a site. A building can also be decomposed in (vertical) parts, where each part defines a building section. This is defined by the composition type attribute of the supertype IfcSpatialStructureElements which is interpreted as follow:COMPLEX: building complex ELEMENT: building PARTIAL: building sectionThe IfcBuilding is used to build the spatial structure of a building (that serves as the primary project breakdown and is required to be hierarchical). The spatial structure elements are linked together by using the objectified relationship IfcRelAggregates. Figure 1 shows the IfcBuilding as part of the spatial structure. It also serves as the spatial container for building and other elements.NOTE Detailed requirements on mandatory element containment and placement structure relationships are given in model view definitions.Figure 1 — Building compositionSystems, such as building service or electrical distribution systems, zonal systems, or structural analysis systems, relate to IfcBuilding by using the objectified relationship IfcRelServicesBuildings.Figure 2 describes the heights and elevations of the IfcBuilding. It is used to provide the height above sea level of the project height datum for this building, that is, the internal height 0.00. The height 0.00 is often used as a building internal reference height and equal to the floor finish level of the ground floor.total height of building, also referred to as ridge height (top of roof structure, e.g the ridge against terrain): provided by Qto_BuildingBaseQuantities with Name="Height" eaves height of building (base of roof structure, e.g the eaves against terrain): provided by Qto_BuildingBaseQuantities with Name="EavesHeight"Figure 2 — Building elevationsHISTORY New entity in IFC1.0.
structural supporting object in a plane or curved surface form withstanding compression forces and bending moment
assembly system that creates an adjoining outer user space built into wall system or roof system
assembly system that creates an extended inner user space built into wall system
structural supporting object in a straight linear form withstanding bending moments
carrying object between discrete positions