Ok today I change the middle 4 center uprights from 1" PVC pipe with 1-1/4" gav. pipe this strenght up the archways alot better.
I also put some metal 2x4 studing that I had hanging around the yard ,The studing was place across each arch way about 3' down from the center or middle of each arch and screwed to the side of the pvc pipe this will give it a little more strength to.
All the materails I'm using so far came from different construction jobs that was all let-overs or begin trash so me begin who I am look at other people junk an say I can use that LOL
My 12' x 12' x8' Chicken Coop was build out construction jobs junk from plywood, metal studing , insultion ,windows, vents, coragated metal roofing, and more insultion and a rubber roof liner , all screws , fasterns, glue for the rubber roof, temp. ligthing and all the use chain link fence ( about 350' ) that I build my 3 runs out of,
all this cost me nothing .
I only needed to buy the 2x12 P.T for the base fram and the 12' x12' inlayed flooring for inside floor and 4' x 8' sheets of Eucatex Thrifty White Tileboard for in inside walls
(Perfect for high-moisture areas such as bathrooms, laundry rooms or kitchens. Hard alkyd melamine coating over smooth durable 1/8" hardboard.Easy to install .Scratch and scuff resistant, this durable paneling can be easily cleaned with a damp cloth )
So this is why I'm using what I have left over to build my Duck Aviary pen , if all works out and all is safe with the aviary and I see that I going to keep the ducks for quite afew years thats great
if something does work or seem not safe for them then I change it do make it right.
I take lots of pride in my pets and animals

seening that all I have at this present time besides my family , my childden, and grand children

.
I'll be posting more pic.'s soon,
now it's time to figure out how much wire I'll be needing to cover it all up and where I'll be building the frams for the doors on each side of the aviary.
Still no answers on what types of plants, shrubs or grasses , and trees that can be use .
Alan
