Abstract: A dual-face dual-split concrete product comprises a first face of horizontal length X and an opposing second face of horizontal length Y, the first face and second face being substantially parallel to one another according to a trapezoidal shape, and with X>Y; generally opposing sidewalls that taper in from the first face to the second face; and generally opposing top and bottom faces adjoining the first face, second face, and opposing sidewalls, with the top face and bottom face being substantially parallel to one another; wherein the first face has one or more subfaces, including one or more inner subfaces intermediate two outer subfaces, with the inner subfaces having a horizontal length L substantially equal to the horizontal length Y of the second face as measured across the concrete product.