Making the Manual Training door in Blender

I have been working a lot on adding finishing trim on the building portion of The Project, so that includes some last-minute plaster details. This time, it is the long-lost plaster arch over the Manual Training door on the ground level. 

I also recorded a screencast while I did the work in Blender! In the video, you will see:
     - tracing from the blueprints, with a flat section extruded to create a 3d form
     - the Boolean modifier in Blender, in which a plane is used to slice another piece of geometry
     - usage of the custom "world-aligned" brick materials in UE4