Converting KML/KMZ on Ellipsoid Height (Local Grid) Using TBC

Propeller supports uploading KML/KMZ, GeoJson, etc. as overlays for comparisons of actual against design.

This article will walk through how to produce KML/KML in ellipsoid heights for local grid jobs for Propeller to accept them.

Global sites using EPSG codes can follow these instructions.)


  • TBC (Trimble Business Center) on your computer.
  • .JXL or .DC file for localization.
  • The GCP file in acceptable format (.csv, .txt or LandXML etc.)


In TBC, create a new project with the corresponding unit and height:

Click Import to load the JXL first, and the points:

After loading the points in, click Export and go to the GIS option to export the GCPs:

Note: We can accept KMZ and KML, and the height is suggested to use Absolute mode.

I still can't do it!

We wrote these articles to equip you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient. If you're stuck, you can connect with our support team by clicking the support button on the top right corner of your user portal.