Composite floor and apparatus therefor

Claim 1

A BUILDING HAVING A STRUCTURAL FRAME AND A PLURALITY OF GENERALLY HORIZONTAL METAL FLOORING ELEMENTS SECURED TO SAID FRAME AND HAVING CORRUGATED UPPER SURFACES INCLUDING ALTERNATING LONGITUDINAL CRESTS AND VALLEYS, A LAYER OF CONCRETE ABOVE EACH OF SAID METAL FLOORING ELEMENTS AND DEFINING A NEUTRAL AXIS, AND MEANS CONNECTED BETWEEN SAID CONCRETE AND SAID FLOORING ELEMENTS AND PROVIDING COMPOSITE COACTION OF SAID CONCRETE AND SAID METAL FLOORING ELEMENTS, SAID MEANS COMPRISING A PLURALITY OF INDIVIDUAL SHEAR CONNECTORS, EACH SAID SHEAR CONNECTOR COMPRISING A METAL STRIP HAVING A LOWER PORTION BELOW THE SAID CRESTS AND AN UPPER PORTION EXTENDING A SUBSTANTIALLY DISTANCE ABOVE SAID NEUTRAL AXIS AND ABOVE SAID CRESTS; THE SAID LOWER PORTION COMPRISING A CONTINUOUS ESSENTIALLY FLAT SHEET OF METAL EXTENDING VERTICALLY FROM AND SECURED AT ITS BASE TO ONE OF SAID VALLEYS AND EXTENDING LONGITUDINALLY THEREALONG; THE SAID UPPER PORTION OF SAID CONNECTORS INCLUDING A PLURALITY OF VERTICAL SLOTS EXTENDING BELOW THE LEVEL OF SAID CRESTS AND DEFINING A PLURALITY OF TABS, THE SAID TABS BEING TWISTED OUT OF THE PLANE OF THE SAID LOWER PORTION ABOVE SAID NEUTRAL AXIS AND TERMINATING INTERMEDIATELY OF SAID CONCRETE ABOVE SAID CRESTS, THE SAID TABS AT THEIR TIPS BEING TRANSVERSE TO THE GENERAL PLANE OF SAID LOWR PORTION, AND THE SAID CONCRETE LAYER SURROUNDING EACH OF THE SAID SHEAR CONNECTORS.