MicroMVDs for exchange requirements/Element classes MicroMVD

This page is about MVD - Model View Definitions. Full documentation is available at the buildingSMART site. All articles in the OSArch wiki related to Model View Definitions (MVD) can be seen in the Model View Definitions (MVD) Category

The following MicroMVD vocabulary can be used to ensure Industry Foundation Classes (IFC) elements belong to the correct IFC class.

Feature: Element classes

In order to correctly identify objects
As any interested stakeholder filtering objects for a particular purpose
All IFC elements must belong to the appropriate IFC class

Scenario: Ensure all IFC type elements use the correct IFC class
 * The element "{guid}" is an "{ifc_class}"
 * The element "{guid}" is an "{ifc_class}" only
 * The element "{guid}" is further defined as a "{predefined_type}"
 * The element "{guid}" should not exist because "{reason}"

You can fill out the variables using the guide below.

Variable	Example	Description
{guid}	28q3AgmxP5cepIweO5Of$o	This is a 22 character GlobalId for a particular IFC element.
{ifc_class}	IfcWall	This case insensitive text value must correspond to the full name of an IFC class.
{predefined_type}	BEAM	This case insensitive text value must correspond to the predefined type of an IFC class, or a custom object type.
{reason}	we don't need it	You can write anything here to describe any reason.

Software guides

Icon	Software	Certified Version		Notes	Guides
		Import	Export
	ArchiCAD	ArchiCAD 23	ArchiCAD 23
	BlenderBIM Add-on	v0.0.200829	v0.0.200829
	FreeCAD	0.19pre	0.19pre
	Revit	Revit 2020.2 IFC 8/5/2020	Revit 2020.2 IFC 8/5/2020	For import, opening an IFC does not retain any element class information. Linking IFCs do retain this information. For export, some Revit family categories have restrictions on which element classes they can be exported to, and the user cannot override it.	Refer to Revit and IFC classes
	Tekla