Exporting a Project to IFC
1
Load the IFC mapping file that you want to use for the export to IFC.
For the procedure to follow, see
Loading and Modifying an IFC Mapping File
on page 1293. You
can also use this procedure to modify the mapping file or to map non-standard Revit Architecture
families to IFC containers.
2
Click File menu
➤
Export
➤
IFC.
3
In the Export dialog, for Save In, navigate to the target folder for the IFC file.
4
For Files of Type, select the desired file type:
■
IFC 2x2 (*.ifc)
■
IFC 2x3 (*.ifc): This is the default certified version of export, and the latest version generally
supported by other systems.
■
IFC BCA ePlan Check (*.ifc): This is a certified variant of IFC 2x2 used for submitting files to
the Singapore BCA ePlan Check Server. When exporting to this file type, you should make
sure that all room bounding elements are selected.
5
Select export options:
■
Current view only
allows you to export elements that are visible in the current view. Visible
elements include those that are hidden by hidden line or shaded mode, any underlays in
the view, and elements that are cropped from view by the crop region. Elements temporarily
hidden using temporary hide/isolate will not be exported. Categories marked as Not Exported
in the IFC Export Classes dialog will not be exported. See
Loading and Modifying an IFC
Mapping File
on page 1293.
■
Split wall and columns by level
allows you to divide multi-level walls and columns by level.
6
For File Name, enter a name for the IFC file.
7
Click Save.
Specifying IFC Entities for Families
Revit Architecture exports building elements to an IFC file based on the categories (and subcategories) to
which the elements belong. For example, Revit Architecture exports a wall to the IFC entity
IfcWallStandardCase, because the wall is an element from the wall category. In many cases, exporting
elements from Revit Architecture to IFC is straightforward and simple, and the default settings make sense.
In some cases, however, you may want to specify the IFC entity to which elements from a particular family
should belong. For example, suppose you design an escalator family. It belongs to the Generic Model category,
and you create for it a subcategory called Escalator. You want to ensure that when you export a project to
IFC, an escalator is properly (and automatically) mapped to the class IfcTransportElement and the type
IfcTransportElementType.
To map a family to an IFC entity
1
Create shared parameters named IFCExportAs and IFCExportType. See
Shared Parameters
on
page 440.
Save these shared parameters to a file that resides in a network location, so that you can add
the parameters to other families and projects. You can also use the shared parameter file that
Revit Architecture makes available (IFC Shared Parameters.txt). See
IFC-Specific Files
on page
1296 for information on how to access this file.
1294 | Chapter 22 Interoperability
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