So here is Scott, my project manager from Amuneal, up on the ladder while I advise him on placement.
I decided the best way to make sure the blind (not seen from front) hardware would go into the mortar of the brick was to create a template and mark in person where the final hardware needed to be welded. Because the pieces are finished with a powder- coated process ( a thermoplastic) they can not be corrected once the coating is on, welding would destroy the surface. Also the template can then be used to drill the holes and will match exactly where the attachments were welded.
It was wonderful to see renditions of the pieces to the scale they are going to be. This piece combines the images made by children in one of the workshops I held. I will add those images in a process blog about the piece. There will be a placard with their names and the silhouettes of their initial drawings.