Abstract: A tongue-groove connection which includes: a first member having an end face with a groove therein, and a second member having an end face with a part thereof forming a tongue, and engaging the groove of the first member while defining a gap therebetween. Each of the first and second members has cover layer means with a core layer therebetween, while a sealing band is sealingly interposed between the first and second members so as to seal the gap therebetween. The tongue-groove connection also comprises a screw connection by means of which the first member and due to the interlocking engagement of its groove with the tongue of the second member also the latter are connectable to a contruction onto which the tongue-groove connection is to be fastened. The tongue has a guiding surface which during the assembly of the tongue in the groove cooperates with an abutment edge on the groove forming first members for guiding the tongue into the groove.

Abstract: A method of and device for interconnecting individual profiled plates to be connected to each other end-to-end, and a structural connection effected thereby, according to which the plates to be interconnected are aligned in end-to-end relationship and a sheet metal section withdrawn from a roll of sheet metal strip material, or a pre-profiled sheet metal part is placed across the ends to be interconnected of profiled plates whereupon a ram is moved relative to the sheet metal section or profiled sheet metal part to press the sheet metal section or sheet metal part into the profiled portion of the profiled plates and the sheet metal section now profiled or the pre-profiled sheet metal part is connected to the profiled plates.