Abstract: Providing vertically erect sets of oppositely positioned forming panels, with the sets being interconnected by means of tie rods and wedging plates. Some of the wedging plates are positioned adjacent to edge portions of their related panels so as to form an overlap between abutting panels and thus provide support therebetween. In providing a form of greater height where sets of panels are placed one on top of another, a first wall of such panels is provided in two vertical sets, with vertical walers bracing vertically aligned panels, and overlapping wedging plates providing proper alignment and connection between laterally adjacent panels. An opposite wall made up of two sets of panels is provided in a similar manner, but with a horizontal waler or walers providing for support and alignment.