Corner block system for retaining wall

DETAILED DESCRIPTION A multi-coursed stackable block structure is disclosed having a novel system for forming a corner.
The corner is formed by a two pieced beveled corner unit system to form a miter joint.
The beveled corner units are stacked on top of one another to form the corner.
A novel pin and aperture system may be used to reinforce and strengthen the two pieced mitered corner unit system in the wall construction.
Additionally, the corner system provides for alternating the length of the corner units such that there is a substantial overlap between the corner units and standard wall units to maintain the structural integrity of the corner and to maintain a strong structural relationship between the corner the surrounding block units.
The corner system also allows for the maintenance of a running half bond in the structure to create a more stable and better visually appearing corner and wall construction.
Additionally, the invention does not use a front lip or ridge type system which inhibits curves and does not allow the vertical stacking of corner block units.
One embodiment of the invention provides a corner block unit for use in creating a corner in a stackable block structure having a plurality of stacked courses wherein each course includes a plurality of blocks and the courses are interlockable with at least one locking pin.
The corner block unit includes: a front face; a back surface opposite the front face; a top surface extending between the front face and the back surface; a bottom surface extending between the front face and the back surface; a pin hole extending between the top surface and the bottom surface, the top surface including a locking aperture so that the locking pin inserted through the pin hole of one of the blocks in the course above extends into the locking aperture; and a beveled side surface extending between the front face and the back surface at an angle so that the front face is longer than the back surface.
Another embodiment of the invention provides a stackable block structure having an outside corner, and having a plurality of stacked courses, each course including a plurality of blocks