Ok, I am not sure how well you can read these since they were in pencil. Essentially, I am thinking a 3mx6m total area with 2x3m area enclosed with walls and roof. This area will have a tin roof, hopefully on hinges or able to be removed by a few people to clean well. Protruding through the back wall will be the cabinet for nest boxes (about 25cm sticking out and 25cm on inside) using 20-25L buckets for nests. The part on outside will have a hinged roof to access the holes in the buckets to collect eggs. This will be 30 off the ground at bottom, and the top will be at about 60cm with hopefully all 10nests in a row. I'd like it this low so the kids can collect eggs easily. On the inside, from the nest boxes will be a space of 50cm before the roosts begin. 4 perches across the width of the building every 35cm at heights of 65cm, 80cm, 90cm, 100cm with the last one 25cm from the wall. The roof is pitched, with the end over the highest roost at 1.5m down to 1m over nests.
The forward wall will have a horizontal sliding door 30cmx50cm set in 20cm from perimeter with a handle on outside to facilitate closing.
The run-out area will be .9m tall (width of chicken wire) with a wooden frame and a "roof" of shadecloth on a frame (maybe in 2-3 panels on each side with a support down the middle) and the panels on hinges so we can open it and step in to catch the hens.
Water: a bucket on a platform on the center cross support of run-out that is plumbed to 6 nipples at appropriate height.
**Feed: this is trickier. I was looking at the PVC feeders with elbows and a couple feet of pipe with holes cut in it, but I think I will need close to 4 linear meters of feeder space and that can accommodate 4-5 kg per day. The problems I have read about pvc feeders is clumping of feed with moisture. It can rain a few inches every day here during the rainy season.Whatever method, I'd like it to be accessible from the outside and not too complex (DIY type with no electric. I guess if we could rig a homemade crank auger that may work)
Wheels/axle--I have no idea! I'd like it to be easy to move by a couple of 10 year olds every day or two. They will be cograzing with a pair of dairy cows.
Availability of materials is reasonable, but the more DIY with common things, the better. We have a full woodshop (table and radial arm saws, band saws, planers, etc) and a metal shop with a hydraulic press and a welder, though not too much welding experience.
***So, now my biggest needs: wheels!! Then, what size lumber is sufficient to be light but sturdy (we have some very dense hardwoods here, but they are very heavy--not much pine and not much is pressure treated, so the dense woods are more durable over time); feeder options, input on arrangement inside the coop area, need for a floor (hopefully not)
Predators--maybe small snakes, but infrequent, a few housecats, predatory birds, ants. The orphanage has a perimeter fence and is pretty urban, so not much wildlife can enter.
Thanks for your input!