Abstract: A substantially horizontal platform has at least three angularly spaced connection members carried proximate the periphery thereof. Each connection member is detachably engageable with a depending leg. Each connection member is also detachably engageable with a finial cap or, alternately, with an upstanding leg for supporting a second platform. Additional elements, including platforms and legs of various lengths, are likewise detachably engageable for the erection of various structural arrangements.

Abstract: The shelving system includes a plurality of shelves each having square shelf openings at each corner. A plurality of leg supports in turn have upper end portions receivable in the bottom of the shelf openings and lower end portions receivable in the top of the shelf openings and within the upper end portions of the leg supports positioned in the bottom of the shelf openings so that the upper end portions of legs are nested in the shelf openings and the lower end portions of legs extending into the top of the shelf openings are nested within the upper end portions of these legs. Any number of successive shelves can be assembled to the top end portions of the upper legs. The nested square shelf opening, upper end portion of a leg and lower end portion of another leg at each corner are secured or mechanically locked by manually passing a clip through the nesting side walls.