We don’t want water in our house. Any water.
Belt and Braces
If, somehow, water gets past the Preprufe membrane, it needs to get through 10 inches of concrete. Since we poured a concrete slab and then put in shotcrete vertical retaining walls, there will be a ‘cold joint’ where the concrete slab meets the vertical retaining walls. Cold joints represent weaker areas where it is easier for water to penetrate.
To add additional protection in the cold joint, Bill Brown recommended (ok, he specified) that we use SuperStop in the cold joint. SuperStop is a bentonite strip that goes inside the joint in the concrete slab and if any water penetrates the cold joint then the bentonite will expand and seal the leak.
Hold Downs for Steel Beams
There are eight ‘pockets’ in the vertical retaining walls that are under where the hollow core concrete panels will rest. These pockets need to be formed in the walls and have hold downs embedded in the concrete. The steel beams will either be welded to 1/2 inch steel plates, which are bolted to the hold downs or nuts will be screwed down to the hold downs going through the flanges of the steel beam.
It is critical that the hold downs be in the correct locations and the pockets are at the correct elevation in the vertical concrete walls.
Cedar Shakes from British Columbia
The shake samples arrived so Bryan took a photo of the shakes enjoying the California sunshine. More on these later …