Wall assembly

A wall assembly comprising a plurality of building blocks, each of said building blocks have a first upstanding rectangularly-shaped wall portion, a second upstanding rectangularly-shaped wall portion parallel to and coextensive with said first wall portion, and a third interconnecting said first and second wall portions, said first wall portion having first groove means on an interior surface thereof opposed to said second wall portion, said first groove means extending from an upper edge of said first wall portion toward a lower edge of said first wall portion, said second wall portion having second groove means on an interior surface thereof opposed to said first wall portion, said second groove means extending from an upper edge of said second wall portion toward a lower edge of said second wall portion, said third wall portion having third groove means in an upper edge thereof, said third groove means extending width-wise of said third wall portion upper edge, and a lattice member comprising first and second elongated runner members disposed parallel to each other and generally coextensive with each other, and spreader members, each spreader member interconnecting said runner members, the ends of said spreader members extending beyond said runner members, said spreader members being upturned at their ends to provide end portions extending substantially normal to said spreader member and extending upwardly above said runner members, said first and second groove means being adapted to receive said spreader and portions and said third groove means being adapted to receive said runner members, whereby said lattice member is adapted to interconnect and lock together said plurality of building blocks to form a wall structure.