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.