BIM Data Does Not Appear in the Correct Location in ArcGIS Pro

Description

In some cases, although the known coordinate system of the BIM data was defined correctly in ArcGIS Pro according to Esri documentation, the data does not appear in the correct location.

Cause

In Revit software, there is a parameter called Geospatial Location (this information includes the GIS Coordinate System Code and Lat/Long values of the project or survey base point). Despite its name, this information is insufficient to establish the geospatial position of the BIM model.

Solution or Workaround

For BIM data to draw in an accurate location on the map, the following is required:

The BIM data must be created so that the X,Y coordinates correspond to a defined geospatial coordinate system.
- BIM coordinates are not inherently geographic locations; instead, they are locations relative to a simple geometric origin (0,0,0). Thus, even if a specific GIS coordinate system code is listed in the Location and Site information in Revit, the data may not necessarily be georeferenced to the correct geographical location in that coordinate system.
- The resources below may be used to help correctly georeference the data in Revit:
The data must include the Esri coordinate system definition in the form of a PRJ file; this must be the same coordinate system that the data was created in. There are multiple ways to associate a PRJ file with the data:
- Define the coordinate system of a BIM file from the Validate Position tab on the BIM file properties accessed by right-clicking the BIM file from the Catalog pane.
- To define the same coordinate system for every BIM file in a file folder, rename the PRJ file containing the desired coordinate system to esri_cad.prj. As a result, every BIM file within the folder that does not have an assigned coordinate system uses the existing PRJ file as its coordinate system.