Classes

	Class	Description
	ExporterIFC	The main class provided by Revit to allow implementation of IFC export.
	ExporterIFCUtils	A class that contains utilities needed to implement Revit's version of the IFC export client application.
	HostObjectSubcomponentInfo	A class that contains roof or floor slab information, calculated by ExporterIFCUtils.ComputeSubcomponents().
	IFCAggregate	A collection of IFC handles or attributes.
	IFCAggregateIterator	A class used to iterate individual objects in an IFCAggregate.
	IFCAnyHandle	A handle representing an item in an IFC file.
	IFCConnectedWallData	A class that contains the IFC-specific information about how an element is joined to another element.
	IFCData	A specialized type of abstract data block that can represent any data type.
	IFCExtrusionCalculatorOptions	This class contains the options used to calculate extrusions from Revit geometry.
	IFCExtrusionCalculatorUtils	A utility class used to calculate extrusion data from Revit geometry for IFC export.
	IFCExtrusionCreationData	A utility object that is used to pass information related to extrusion creation.
	IFCExtrusionData	Represents the geometry of an extrusion (a solid body or opening) generated from Revit geometry.
	IFCFamilyInstanceExtrusionExportResults	This class represents the results of a geometric analysis of a family instance.
	IFCFile	Represents the IFC file which is being created during export.
	IFCFileModelOptions	This class contains options to create an IFC file model.
	IFCFileReadOptions	This class contains options to read an IFC file.
	IFCFileWriteOptions	This class contains options to write an IFC file.
	IFCGeometryInfo	A container class for Revit geometry extracted from an element.
	IFCImportOptions	IFC Import options.
	IFCLegacyStairOrRamp	The class contains the components of a legacy stair or ramp.
	IFCLevelInfo	Represents information about a particular level in the document.
	IFCOpeningData	A class that contains opening data including extrusion data, opening solids and opening element id.
	IFCProductWrapper	This class is used to ensure that elements and objects are associated with the current IfcProduct.
	IFCRange	Typically for IFC export, this represents the lower and upper elevations for split wall and column geometry.
	IFCTransaction	IFC transactions are context-like objects that guard any changes made to an IFC file.
	IFCTransformSetter	A state-based class that forces an extra transformation applied to objects being exported.
	ImporterIFC	The main class provided by Revit to allow implementation of IFC import.
	ImporterIFCUtils	A class that contains utilities needed to implement Revit's version of the IFC import client application.
	RoofComponents	A class that contains multiple roof slab infos of a roof.

Interfaces

	Interface	Description
	IExporterIFC	The interface used to implement a custom IFC exporter.
	IIFCImporterServer	Interface for external servers implementing IFC import.

Enumerations

	Enumeration	Description
	IFCConnectedWallDataLocation	An enumerated type that represents the location where an element is connected to a wall.
	IFCDataPrimitiveType	Used in operations to specify the primitive type of an IFCData.
	IFCExtrusionAxes	Represents the possible axes to try when generating an extrusion using IFCCreateExtrusionData.
	IFCExtrusionBasis	This enumerated type represents the possible bases for derivation of extrusion geometry.
	IFCFileFormat	The IFC file format.
	IFCImportAction	The action of the IFC import.
	IFCImportIntent	The intent of the IFC import.
	IFCLogical	A datatype can have values TRUE, FALSE or UNKNOWN.
	IFCProjectLevelGUIDType	The type of the GUID to be retrieved from Revit.