I am building a coop and run out of some old trampoline frames. My dad had already made a shed out of 2 trampolines and all I have to do is reconstruct it at my place. Its uses half of the frame for a truss to make a half round building. It is 12 X 15 and I have enough frames to add 16 X 15 run onto the end. If all goes well I will have it completed this weekend.