Reinforced concrete ceiling formwork sheathing panel - has space retaining knobs and racking wire, remaining in finished ceiling

摘要

The reinforced concrete ceilings are constructed using formwork sheathing panels, of reinforced or stressed concrete, or wood, steel or plastic, with intermediate spacers incorporated. The panels (2) are fitted with space retainer knobs (u) and racking wire (5), and remain in the finished reinforced-concrete ceiling (6) after removal of the support (1). Strong bonding between the concrete and the steel reinforcement is effected, and the required interval between steel and concrete is preserved. Difficult and time-consuming cleaning and oiling of panels, and insertion of spacers, are no longer necessary, likewise subsequent panel removal.