Patent ID: 8562260

Claim:
A concrete block for building a randomly stacked segmental retaining wall, said concrete block comprising: a front face and a back face connected together by first and second S-shaped side walls located on opposite sides of said block and extending between a top surface and a bottom surface, wherein the shape of said first side wall is a neutral S-shape and the shape of the said second side wall is a positive S-shape resulting in an inward bevel of said second side wall, and wherein said side walls are configured to create a lateral interlock system between the block and one or more adjacent blocks in said segmental retaining wall; said bottom surface defining a longitudinal slot, said longitudinal slot being centered between said front and back faces, and extending over a portion of a distance extending between said side walls, said portion covering a majority of said distance; and a vertical connector located on said top surface of said block and centered between said front and back faces, said vertical connector being configured to fit into an adjoining longitudinal slot to form an intermittent vertical interlock, said adjoining longitudinal slot defined by a bottom surface of an adjoining block positioned immediately above said concrete block in said segmental retaining wall.