Steel shelving construction

Claim 1

A SHELVING ASSEMBLY COMPRISING FOUR VERTICALLY EXTENDING RECTANGULARLY ARRANGED UPRIGHTS, A PAIR OF ELONGATED SHELF SUPPORTS DISPOSED IN PARALLEL HORIZONTAL RELATION EACH EXTENDING BETWEEN AND SUPPORTEDLY ENGAGED AT ITS ENDS WITH A PAIR OF SAID UPRIGHTS, EACH OF SAID SUPPORTS HAVING BETWEEN ITS ENDS A GENERALLY CHANNEL CROSS SECTION WITH THE WEB EXTENDING HORIZONTALLY AND THE FLANGES PROJECTING VERTICALLY UPWARDLY THEREFROM TO DIFFERENT HEIGHTS, THE HIGHER FLANGES OF THE SUPPORTS BEING DISPOSED OUTWARDLY OF THE RESPECTIVE SHORTER FLANGES, A BRACE MEMBER OF INVERTED CHANNEL SECTION OF A DEPTH SUBSTANTIALLY EQUAL TO THE VERTICAL EXTENT OF SAID HIGHER FLANGES OF THE SUPPORTS ABOVE THE SUPPORT WEBS AND HAVING UPWARDLY EXTENDING SLOTS IN THE DEPENDING FLANGES THEREOF SPACED FROM THE ENDS A DISTANCE SUBSTANTIALLY EQUAL TO THE INTERIOR WIDTH OF THE SUPPORTS AND OF A HEIGHT AND WIDTH NOT LESS THAN THE HEIGHT AND THICKNESS OF THE SHORTER FLANGES OF THE SUPPORTS, SAID BRACE MEMBER BEING DISPOSED TRANSVERSELY ON THE SUPPORTS WITH SAID SLOTS RECEIVING SAID SHORTER FLANGES OF THE SUPPORTS TO ENGAGE THE END PORTIONS OF THE LOWER EDGES OF THE BRACE MEMBER FLANGES ON SAID SUPPORT WEBS, AND THE END EDGES OF THE BRACE MEMBER FLANGES IN ABUTTING RELATION AGAINST THE HIGHER FLANGES OF THE SUPPORTS AND TO DISPOSE THE BRACE WEB SUBSTANTIALLY IN THE HORIZONTAL PLANE OF THE UPPER EDGES OF THE HIGHER SUPPORT FLANGES, AND A SHEET OVERLYING THE SUPPORTS AND BRACE MEMBER BETWEEN THE UPRIGHTS TO PROVIDE A SUPPORTING SHELF SURFACE AND HAVING DEPENDING EDGE PORTIONS ENGAGING WITH THE SUPPORTS TO HOLD THE SHEET AGAINST MOVEMENT TRANSVERSELY THEREOF.