Well 39 bags of Quikrete, and most of a Monday, and I got the new floor poured for my coop; 9.5' long x 5.5' wide x 6" thick. It'll hold the permanent coop, which is sitting behind it right now. That coop is being used for isolating my Silkie right now, until he's well. The EE and BR are temporarily living in the portable coop (on the right). They all still get to free range, I just let the Silkie out by itself.