BIM files that are not authored using the coordinates of the chosen global coordinate system must be georeferenced to reposition the data correctly in ArcGIS Pro.
A BIM file that contains real-world coordinates still requires a PRJ file to identify that coordinate system. BIM files may or may not be drawn to a known coordinate system. The coordinates of the feature geometry that ultimately position the features in an ArcGIS Pro map or scene are established as a combination of the coordinates of the elements in the BIM file, optional offset information from an Esri world file (WLD3), and a required companion Esri coordinate system definition file (PRJ). The geometry of features in the resulting multipatch feature classes is based on the 3D geometry of the element from the BIM file. You can modify the symbology of the BIM-sourced feature layers using symbology tools in ArcGIS Pro. The default symbology of BIM file-sourced feature layers includes display properties of color and textures from the BIM file. They are valid inputs for ArcGIS Pro tools as layers, as well as geoprocessing models, geoprocessing tools, and scripts. Initial support for IFC files does not include the floor plan information.Īll the feature classes included in the BIM file workspace are standard, read-only feature classes. In some cases, a general IFC category, such as IfcSlabs, will be divided into multiple BIM file workspace feature classes based on their different functions. IFC categories conform to the same categories and construction disciplines as the Revit-based BIM file workspace data. The resulting feature classes of Industry Foundation Classes (IFC) files included in the BIM file workspace include the IFC categories relating to building structures. The Floorplan dataset includes point, polyline, and polygon feature classes, which are useful in indoor mapping applications. An additional set of derived feature classes is included in the Floorplan dataset of the BIM file workspace.
The feature classes in a BIM file workspace from Revit files have a one-to-one correlation with Revit software categories.
These feature classes are expressed as individual feature layers like other GIS data sources, or in the case of the entire BIM file workspace, as a special ArcGIS Pro building layer. The entire BIM file workspace or individual feature classes can be added to an ArcGIS Pro map or scene. These disciplines include architectural, structural, electrical, mechanical, piping, and infrastructure. The BIM file workspace is organized into feature datasets named after conventional construction disciplines.
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