The Floor

Next it was time for the part the kids were waiting for most: the floor.

I built what amounted to a reverse truss system. The main support comes from four cinder blocks anchored to the floor with cement, with 2x4s attached to the sides (with cross braces) and the top (anchored into the cinderblock cavities with brackets in cement). 2x4's cut at an angle support 2x4's on the sides, which are flush with those in the middle. Once this structure was all level and solidly in place, I slid in pieces of 4 ft wide OSB and secured them to the support structure. The completed floor! I put in a second layer of OSB over, and offset from, the first, for additional stability. Once the two ends of the pipe are done, I will put in a nice floor covering.