Connecting device for balancing potentials of armored concrete structures, uses nail-plate with central threaded bore aligned with contact plate bore

摘要

A connecting device has a dish-shaped nail plate (1) which joins to the inner face of the concrete form-work and a thread externally accessible after removal of the form-work. The nail-plate has a central threaded bore (7), and a separate contact plate (6) with a central threaded bore aligned with the nail plate bore, and can be placed on the inner face of the nail-plate floor (3). An externally threaded bolt (16) is brought through the contact plate and the nail plate, so that its outer threaded section (17) juts out externally over the contact plate and is fixed by a nut (19).