I chose a triangular shape, because that is the easiest shape to make which is stable. (No need for braces or trusses) The raw materials are all stock size or stock length, like 4 x 8 feet plywood and 10 foot long electrical conduit, and cut into two pieces - no waste ! The floor size of the coop is 4 x 4 feet, and consists out of 2 plastic drain pans for a washing machine. These can be removed, by removing the egg laying box away from the coop, for cleaning and washing off. The run behind it is 5 x 20 feet. The blue tarp is there for the time being to give the hens a bit more shade where they can rest, instead of *only under* the coop. I will replace that next year with some movable wooden covers. Movable meaning they will act as a lift up cover, hinged on the top. In the top of the coop are six 2 inch diameter vent holes, three on each end. This is my first year with chickens ... Started with four 5 day-old hatchlings (?), but some neighbour hood dogs killed one of them.