I recently took a 3 season porch and enclosed it. I added a half bathroom and small Jotul wood stove. It measures about 10x10. As you can see in the photo, there are 2 footings, one on the left and one on the right. The 2 4x4 posts in the middle are just hanging there, no support is being provided. The footings are supporting 2 x 10's that run the span. I was thinking of digging 2 - 8 inch footings with sonotubes 48 inches down around 1 foot in or so from each 4x4 and supporting that with 6x6 PT. Will that work or should I go with 3?
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