Retaining wall system

A concrete slab for a retaining wall, comprising:

• a prism having parallel top and bottom surfaces, and opposed parallel side walls, and end walls, the prism having an X axis in the longitudinal direction extending between the end walls, a Y axis in the width direction extending between the side walls, and a Z axis perpendicular to the X and Y axes, extending between the top and bottom surfaces, a first dividing line extending parallel to the X axis from one end wall to the other end wall in order to define a separating plane bisecting the prism;
• and
• at least a pair of second dividing lines each extending parallel to the Y axis of the prism from the first dividing line to one of the opposite side walls, the second dividing lines being parallel to each other but offset therefrom to form at least four blocks in the form of prisms having different dimensions in the X axis,
• wherein the blocks formed have retaining means for providing a slope to the retaining wall, the retaining means being in the form of a lip projecting downwardly from the bottom surface of each block in the slab, and the lip is adjacent the side wall of each block,
• wherein when adjacent overlying blocks are assembled to form a wall, the respective lips abut against the side wall of the adjacent block to stagger the blocks to provide a slope with the intersection of the top and front face lying in a common plane, and
• wherein the slope of the plane is between a vertical and 45.degree. from the vertical.