I've tried searching for this and I haven't had much luck. I want to have 2 laying hens and my plan is to suspend the entire coop/run area underneath my shed. My shed is built on a hill and the bottom of the floor joists are ~4ft off the ground at their highest point. This will allow me to easily add power for a light/heat lamp.
The "run" area will consist of a floor of 1/4" hardware cloth, allowing feces to drop through to the ground similar to hog houses. I am contemplating whether the indoor part will have mesh floor as well. Measurements are looking like 8'x3'x2'(tall) with a nesting box/feeder/roost area of 3'x3'x2' within that footprint. The indoor area will have a feeding trough and a watering apparatus.
I know pictures are worth a thousand words, but I'm planning to build this tomorrow and I'll get them up. I mainly want to know what problems the chickens could face living in these conditions. Everything I know about backyard chickens is that most breeds are hardy and I could see making a tractor to put them out in the yard occasionally, but they'll be living under the shed mainly.