Abstract: A modular form assembly for a concrete structure includes vertical channel pieces coupled detachably side by side to one another, and horizontal reinforcement units interconnected detachably. Each channel piece includes two opposing vertical walls, and an intermediate vertical wall interconnecting the vertical walls and serving as a form wall. Each vertical wall is attached detachably to the adjacent vertical wall to arrange the form walls in a common vertical plane. The reinforcement units are attached detachably to the vertical walls opposite to the form walls so as to keep the form walls in the common vertical plane. Each reinforcement unit includes a horizontal plate, first flanges extending vertically from two opposing sides of the horizontal plate, and second flanges extending vertically from two other opposing sides of the horizontal plate. Each second flange abuts against and is connected detachably to the adjacent second flange.

Abstract: An apparatus is used to support and move vertically an erected form assembly during the construction of a building with a plurality of stories. The stories include a lower story and an upper story. Each of the lower and upper stories is formed previously with a concrete wall structure that has surrounding walls formed integrally with reinforced horizontal beams which confine an interior space. The apparatus includes a form support body that can extend across the interior space of the upper story and that has a top side on which the erected form assembly can rest. A plurality of legs extend downwardly from the form support body. Each leg has a lower portion associated with a clamping unit in order to fix releasably the leg to one of the reinforced horizontal beams of the lower story. A horizontal support bar is located below and is spaced from the form support body.

Abstract: A method for constructing a concrete building having a plurality of stories in which walls and floors of the concrete building are formed by means of modular form assemblies which can be used repeatedly without disassembling and reassembling includes (a') forming concrete surrounding wall structures of the stories one after the other by elevating a modular inner form assembly to a level of each story from a level of a lower story until the concrete surrounding wall structure of an uppermost story is formed; and (b') forming floors of the stories one after the other by lowering a floor form assembly from the level of the uppermost story.

Abstract: A method of manufacturing a washer includes the steps of: (a) feeding a metal wire into a die having a bearing face and a through hole which opens to the bearing face so as to permit the metal wire in the through hole to protrude out of the bearing face at a predetermined length; (b) punching the protruded metal wire against the bearing face to form a disc with a punching head which includes a core and a shell; (c) punching the disc to form a central hole on the disc by forcing the core out of said shell and into the through hole; and (d) retracting the punching head to allow the disc to separate from the metal wire.