Well done!


I'd like to add that the stability of the rail construction would benefit a lot by a simple diagonal support, to prevent twisting and shifting problems, which could loosen the screws of the mounting Z-claws holding the PV panels, or even damage the frames of the panels. You were using U-clamps instead of screws, so the risks are lower, but still...
Depends on how windy your area is.

I have to use 90 pounds of weight per square meter on my roof to securely hold the panels and mounts in place, which are angled by 35°, with past top wind speeds of 80 mph. I doubled the calculated results, just to be very sure. One of the concrete blocks i am using weighs a tad over 120 pounds. I'm currently building a "device" to be able to pull them up alone, something like a vertical pulley/sled that tilts horizontally once the block is being pulled over the edge of the roof. This will be fun