Abstract: A building panel has a reinforcing mesh embedded in a concrete slab formed by pressing. The reinforcing mesh is formed of wire rods each of which has at least one flat face. The rods are welded together with the flat faces of the rods abutting one another so that contact between the wire rods occurs over an area. Wire mesh of this kind has considerably enhanced weld shear strength. The panels are formed by pressing so that the concrete mix becomes dense and generally homogeneous. The high structural strength of such panels makes them ideal for use in constructing block and beam foundations and for use in walls, ceilings and flooring.