Those of you that used PVC pipe, was it necessary to heat the PVC to bend in such a large arc? I already have a run made from 2x4 welded wire and a PVC frame. I used electrical PCV as it is UV resistant. I used the 90 degree bends where the sides meet the top. The bends are a gentle curve about a foot long rather than the sharp ones for regular PVC.. The top is sagging in the middle slightly and I can't put a tarp on the roof as it just catches water. I want to try to reuse what I have before I go and buy TSC stock panels and completely rebuild it. I built the Purina coop a few years ago but it was so large for my four chickens (all I'm allowed) I am shrinking it down to 30d x 48w x 30/36h from the 4 foot cube.. I'll post some pics of it when I'm done.