I always like to see how members build with re-purposed materials so good job with that! I'd love to have a pile of bricks like you do (they wouldn't last me long). Thanks for sharing your coop!
This is a pretty basic set-up for areas with mild-ish winters. There aren't a lot of instructions, but the descriptions given and the loads of pictures would make it an easy coop to recreate. I would never have thought to use cement sheeting, but it makes a lot of sense for predator proofing. Very nicely done!
We didn't use cement fibre sheeting because it is good for predator proofing intensionally, we just used it because, like Mount Everest, it was there. [in our garage, left over from another DIY project]