Multi-walled structure and method of assembly

Claim 1

A BUILDING CONSTRUCTION FOR USE IN FORMING A MULTIWALLED STRUCTURE SAID CONSTRUCTION COMPRISING: A PLURALITY OF BOTTOM BEAMS ATTACHED IN END-TO-END RELATION AND LAID OUT IN THE OUTLINE OF THE WALLS OF SAID STRUCTURE, EACH OF SAID BOTTOM BEAMS PROVIDED ON ITS UPPER SURFACE WITH PARALLEL LONGITUDINAL UPWARDLY OPENING INTERIOR AND EXTERIOR GROOVES; A PLURALITY OF TOP BEAMS ATTACHED IN END-TO-END RELATION AND SPACED VERTICALLY ABOVE SAID BOTTOM BEAMS, IN THE SAME OUTLINE AS SAID BOTTOM BEAMS, EACH OF SAID TOP BEAMS PROVIDED ON ITS LOWER SURFACE WITH PARALLEL LONGITUDINAL DOWNWARDLY OPENING INTERIOR AND EXTERIOR GROOVES AND PROVIDED ON ONE OF ITS SIDE SURFACES WITH A LONGITUDINAL HORIZONTALLY OPENING GROOVES SAID INTERIOR AND EXTERIOR GROOVES IN SAID TOP BEAMS BEING DEEPER THAN SAID INTERIOR AND EXTERIOR GROOVES IN SAID BOTTOM BEAMS; A PLURALITY OF SPACED APART VERTICAL INTERIOR WALL ELEMENTS ATTACHED AT THEIR UPPER ENDS TO SAID TOP BEAMS AND ATTACHED AT THEIR LOWER ENDS TO SAID BOTTOM BEAMS, EACH OF SAID INTERIOR WALL ELEMENTS PROVIDED WITH TWO OPPOSITELY OPENING LONGITUDINAL GROOVES AND PROVIDED ON THE UPPER AND LOWER ENDS THEREOF WITH LONGITUDINALLY EXTENDING LIPS THAT ARE RECEIVED WITHIN THE INTERIOR GROOVES OF SAID TOP AND BOTTOM BEAMS RESPECTIVELY; A PLURALITY OF SPACED APART VERTICAL EXTERIOR WALL ELEMENTS ATTACHED AT THEIR UPPER ENDS TO SAID TOP BEAMS AND AT THEIR LOWER ENDS TO SAID BOTTOM BEAMS, SAID EXTERIOR WALL ELEMENTS BEING SPACED EXTERIORLY FROM SAID INTERIOR WALL ELEMENTS AND EACH OF SAID EXTERIOR WALL ELEMENTS PROVIDED WITH TWO OPPOSITELY OPENING LONGITUDINAL GROOVES AND PROVIDED ON THE UPPER AND LOWER ENDS THEREOF WITH LONGITUDINALLY EXTENDING LIPS