We have finished laying gravel and insulation for the CEB addition foundation. It is a shallow insulated foundation, made with 2″ extruded polystyrene insulation going down 18 inches, plus 1 inch gravel as the fill. There is a drainage tube on the bottom. We excavated with the LifeTrac backhoe, which worked very well.
Edit in 2020: that is LifeTrac 1 doing the gravel hauling. Insulation was never put in because ground froze before we got to it. In 2020, the walls are standing strong, with minor shifting. Some spalling on CEBs under the overhang where horizontal rains can get to the CEBs. Worst artifact is a large animal that burrowed under wall to make a home, threatening wall integrity in that section. Periodic flooding occurs inside the workshop, as the floor is dug out 1 foot to accomodate more workshop height.
We also finished putting together 26 trusses, each 32 feet long. These are flat trusses for a living roof on the addition.
Meanwhile we’ve got hundreds of bricks pressed, and we’re waiting for the weather to clear up to press more. We’ll be pressing for about the next week. It’s really pushing it into the late season, and it’s raining right now. The bricks are covered – as they turn to a mudslide if they get wet. That is one of the challenges with CEB construction, we’re finding out. We’re planning on using stone sealer on the outside walls.