Patent ID: 6012699
Filing Date: 2000-01-11
Classification: E04G

Abstract:
A concrete form having a flexible panel member with an upstanding perimetral flange projected laterally from one side thereof and wherein said flange has a pair of transversely opposite side sections disposed on opposite ends of said form each of which side sections has a flat terminal surface portion extended inwardly in a direction parallel to said one side of the form, the improvement comprising:(a) each of said opposite flange side sections is divided into a plurality of segments by a plurality of notches longitudinally spaced over the length thereof, with each notch terminating in a V-shape portion having the apex thereof adjacent said one side of the panel member whereby said panel member is laterally flexibly movable to a preselected generally curve shape, and(b) a plurality of bendable metal strap segments for adjustably interconnecting the terminal surface portions of a corresponding pair of said flange segments to maintain the pre-selected curved shape of said panel, said metal strap segments aligned end-to-end in at least one row substantially parallel to said terminal portions of said side sections of said flange section segments, and said metal strap segments positioned back to back against the terminal surface portion of said flange segments.