Abstract: A concrete reinforcement means arranged in cast walls particularly but not exclusively for the purpose of supporting the wall during casting of the superposed wall, the upper ends of said means projecting vertically to a level past the plane of the predetermined surface of the joisting slab to be cast on top of the first wall. The reinforcement means are sufficiently pliant to bend down level with the joisting slab surface and capable of springing back to their original position, whereby any tool necessary for the finishing treatment of the concrete joisting slab may work on the entire slab surface in a quick and efficient manner without being impeded by the upright ends of said reinforcement means.