Patent ID: 8256182

Claim:
A free-standing wall arrangement comprising: (a) a plurality of concrete base blocks; each base block having first and second sides and first and second ends between the sides, and a uniform first depth DI extending between the first and second sides; the base blocks being arranged adjacent to each other at the first and second ends to form a base course; each base block having a top face and an opposite bottom face between the first and second ends and the first and second sides; each top face being flat, forming a flat platform; each base block includes at least one center through-core having first and second edges parallel to the first and second sides of the base block; (b) a first plurality of concrete wall blocks stacked on the flat platform of the base course and on each other to form a first wall face having at least two courses; each block of the first plurality of wall blocks having (i) a uniform second depth D 2 that is less than half of the first depth D 1 ; (ii) at least one exposure face arranged to be along the first side of the base blocks to form the first wall face; (iii) a planar rear face that is opposite the exposure face; (iv) first and second sides between the exposure face and rear face; (v) planar top and bottom faces between the exposure face, rear face, and first and second sides; the top and bottom faces being parallel to each other and having no projection extending away from the planar top and bottom faces; (c) a second plurality of wall blocks stacked on the flat platform of the base course and on each other to form a second wall face that faces the opposite direction from the first wall face and has the same number of courses as the first plurality of wall blocks; each block of the second plurality of wall blocks having (i) the uniform second depth D 2 ; (ii) at least one exposure face arranged to be along the second side of the base blocks to form the second wall face; (iii) a planar rear face that is opposite the exposure face; (iv) first and second sides between the exposure face and rear face; and (v) planar top and bottom faces between the exposure face, rear face, and first and second sides; the top and bottom faces being parallel to each other and having no projection extending away from the planar top and bottom faces; wherein, (i) the rear faces of the first and second plurality of wall blocks are spaced apart from each other to form a gap therebetween; (ii) each block of the first plurality of wall blocks that is stacked on the flat platform of the base blocks has its rear face aligned with one of the first edges of the through-core; (iii) each block of the second plurality of wall blocks that is stacked against on the flat platform of the base blocks has its rear face aligned with one of the second edges of the through-core; and (iv) each block of the first and second plurality of wall blocks that is stacked on other wall blocks has its planar bottom face on the planar top face of at least one other wall block.