Patent ID: 7367752

Claim:
A retaining wall block comprising: a front surface, a rear surface spaced apart from the front surface, side surfaces, a top surface, and a bottom surface; wherein the side surfaces each comprise a plurality of sections that are angled with respect to each other, a first one of the plurality of sections forming a laterally extending, rearwardly facing shoulder extending generally parallel to the rear surface and substantially parallel to the front surface, a second one of the plurality of sections disposed adjacent and intersecting the front surface, the shoulders extending outwardly beyond a lateral extent of the rear surface; the bottom surface comprising at least one projection configured and arranged such that when the second section of one of the side surfaces is engaged with a side surface of a laterally adjacent block in a multiple course wall structure, a contact edge of the projection abuttingly engages a shoulder of a vertically adjacent block; and the bottom surface defining a channel extending from the rear surface toward the front surface, and an aperture extending into the block from the channel.