Creating an indoor arena over outdoor

I did it! We had a little bit of a drainage issue at first, but did some dirt work around the building and upgraded the gutter/drain lines and it’s been fine. The added benefit of having it over the old outdoor was that I knew how the wind blew and as such did NOT put doors on that side of the building. Mine is built so that I have 3 large sliders that provide ventilation, but do not create a wind tunnel.