Structural unit and structure incorporating same

Claim 1

A STRUCTURAL UNIT COMPRISING A SUBSTANTIALLY HORIZONTAL SLAB WITH A COHERENT MAJOR PORTION OF POLYGONAL OUTLINE COMPOSED OF A PLURALITY OF EDGEWISE ADJOINING COPLANAR PLATES IN THE SHAPE OF ISOSCELES TRIANGLES, A MULTIPLICITY OF SAID COPLANAR PLATES HAVING CORNERS AT A COMMON CONNECTION POINT, SAID PLATES CONSTITUTING A COHERENT MAJOR PORTION OF THE SLAB AND BEING PROVIDED WITH PERIPHERAL RECESSES FORMING CHANNELS WITHIN THE SLAB AT THEIR JUNCTIONS; FLEXIBLE TIE MEANS SECURING SAID PLATES WITH ADJOINING EDGES IN SHEAR-RESISTING LOAD-BEARING RELATIONSHIP, SAID TIE MEANS PERIPHERALLY SURROUNDING SAID PLATES FOR HOLDING THEM IN CONTACT WITH ONE ANOTHER, SAID TIE MEANS INCLUDINGG A PLURALITY OF LOOPS OVERLAPPINGLY EXTENDING THROUGH DIFFERENT ONES OF SAID CHANNELS AND ALONG COMPLEMENTARY PORTIONS OF SAID OUTLINE; A COLUMN SUPPORTING SAID SLAB AT SAID COMMON CONNECTION POINT; AND COUPLING MEANS SECURING SAID COLUMN TO EACH OF SAID CORNERS TO SAID PLATES AT SAID COMMON CONNECTION POINT, THEREBY FASTENING SAID COLUMN TO SAID SLAB.