Shelving system

In a shelving system having a plurality of vertical standards arranged in a rectangular array, each standard having an inwardly facing inner surface defining a vertically spaced series of upwardly opening pockets, each of said pockets on each said standard projecting inwardly of said rectangular array and inwardly of the array from said inner surface, said pockets defining formation for engaging a shelf, and wherein a set of pockets, one on each of said standards, is used to engage, support and retain a shelf at each of its four corners on a said rectangular array,

• a shelf, said shelf being substantially rectangular and being integrally formed from a single sheet of steel to provide a main shelf surface and front, rear and opposite side edges, said front and rear edges merging into downwardly extending front and rear hollow box-beam reinforcing formations, and said side edges merging into downwardly projecting side panels, said shelf having four corners, and said shelf further having flaps integral with said shelf extending rearwardly from adjacent said front edges and forwardly from adjacent said rear edges and lying in overlapping relationship with said side panels at each of the four corners,
• in each of the four corners, a pair of aligned openings, one formed in each side panel and an adjacent overlapping flap, and a circular rivet secured in each of said pair of aligned openings, each said rivet having a head, said rivet head projecting outwardly of said side edge, and wherein a set of four rivets is positioned to overlie and engage a set of pockets, and to cooperate therewith to support a shelf in said set of pockets, and to retain a shelf in said rectangular array.