Composite wall structure

Claim 1

A COMPOSITE CORRUGATED WALL COMPRISING A PLURALITY OF CORRUGATED ELEMENTS ARRANGED IN SUPERPOSED POSITION AND EXTENDING IN CROSSWISE DIRECTIONS TO EACH OTHER, ONE OF SAID ELEMENTS LOCATED BELOW AN ADJACENT UPPER ELEMENT BEING PROVIDED WITH A PLURALITY OF CUT OUTS HAVING A PREDETERMINED DISTANCE FROM EACH OTHER AND POSITIONED IN THE CRESTS OF THE CORRUGATIONS OF SAID ONE ELEMENT, SO THAT THE CORRUGATIONS OF SAID UPPER ELEMENT ARE SEATED IN SAID CUT OUTS AND FIXEDLY ENGAGED WITH SAID ONE ELEMENT, SAID ONE ELEMENT BEING PROVIDED WITH PERFORATIONS PROVIDED ONLY IN SOME OF THE CRESTS OF ITS CORRUGATIONS, SAID PERFORATIONS BEING LOCATED APPROXIMATELY MIDWAY BETWEEN TWO ADJACENT CUT OUTS, MEANS DISPOSED BETWEEN SAID UPPER CORRUGATED ELEMENT AND SAID ONE CORRUGATED ELEMENT AND EXTENDING FROM SAID PERFORATIONS OF ONE ELEMENT FOR CONTACT WITH THE UNDERFACES OF THE CRESTS OF THE CORRUGATIONS OF SAID UPPER ELEMENT, AND MEANS EXTENDING FROM SAID UPPER ELEMENT TO SAID ONE ELEMENT AND BONDED TO THE LATTER, THE NORMAL DISTANCE BETWEEN THE UPPERMOST CRESTS OF SAID UPPER ELEMENT AND THE UPPERMOST CRESTS OF SAID ONE ELEMENT BEING SLIGHTLY REDUCED, WHEN SAID UPPER ELEMENT IS ENGAGED IN THE CUT OUTS OF SAID ONE ELEMENT.