Formwork assembly for a poured concrete structure

Formwork assembly for constructing structural members of a poured concrete, comprising formwork panels with a concrete forming surface thereof made up of an elastically deformable material, said concrete forming surface being bendable within the elastic limit thereof for fabricating curved formwork panels, said formwork panels having an inside surface defining the concrete formwork surface and an outside surface and having a pair of spaced apart vertically extending opposite first ends, and a pair of spaced apart horizontally extending opposite second ends, each said opposite first end having a similar length, vertically extending support members mounted on said outside surface at each of said opposite first ends and extending approximately for the length of said opposite first ends, each said support member having a lower end and an upper end and girder members extending horizonatally between said spaced apart opposite first ends and combining with said support members for interconnecting vertically adjoining said formwork panels into the formwork assembly, wherein the improvement comprises that said formwork panels are located in a plurality of horizontally extending rows with said horizontally extending rows located one above the other with said second ends of the vertically adjacent said formwork panels being in close relation to one another, the lower and upper ends of said support members combine with the adjacent outside surface at the second ends of said formwork panels on which they are mounted to form a groove section, and the groove sections on vertically adjacent said formwork panels located one above the other combine to form recesses into which said girder members fit for supporting and interconnecting said formwork panels making up the formwork assembly, said girder members project outwardly from said outside surface and have a flange extending vertically and bearing against and in an overlapping manner the outside surface of said formwork panels at the second ends thereof for supporting and shaping said formwork panels, and one of said recesses and said girder members fitted into said recesses having a generally vertically extending wedge shaped surface located within said recesses for securely interconnecting vertically adjacent said formwork panels.