So after about a week Mike and I set aside a few days to really make some progress. We had the most difficult task ahead of us: Within the least amount of time, knock out the old foundation and replace it.
So thats what we did. Jake, a neighbor of ours dropped off a couple of extra house jacks and we completed jacking the room up on a set of 4×4″ posts that were connected to the walls. Since we had to replace the bottom board of the walls themselves we had to jack them up separate from the floor. The floor was supported by crawling underneath and supporting with cinder blocks and shims.
Once we trusted the supports we knocked out the wood and old brick. We were amazed with how easily it came down. Check out these videos!
To replace the foundation we removed the old brick and set cinder blocks on a layer of mortar on top of the existing footer that was poured from when the room was built. Basically the blocks were just stacked using a cement glue to hold them together. The weight was really on the corners because the back side of the room is connected to the rest of the house, but we added extra support on the back as well. On top of the blocks is a green treated barrier on which the new 2x12s set. Basically, we put the whole thing on stilts!
More Photos: http://photos.ywammadison.org/thumbnails-68.html