Patent ID: 7958687

Claim:
A wall system comprising, a) a plurality of concrete wall panels each panel comprising a slab having outside and inside faces, and a pair of end ribs connected to the slab, the ribs being oriented generally vertically when the panel is oriented generally vertically and provided on opposed ends of the panel, the plurality of panels comprising a first panel and a second panel adapted to be mounted above the first panel, the first panel comprising an upper surface and a rabbet formed in the upper surface opening to the outside face of the first panel and the second panel comprising a bottom surface and an extension extending from the bottom surface into the rabbet of the first panel; b) a plurality of holes in the end ribs, the holes being provided in pairs, each pair comprised of a hole in each of the adjacent end ribs of adjacent panels, the holes of each pair positioned so as to permit a fastener to pass through the pair of holes; and, c) fasteners adapted to pass through the pairs of holes to secure adjacent panels together.