Abstract: A support device or load-bearing elevator and system including a plurality of such devices or elevators, for use in connection with a space or spaces between adjacently-mounted deck members is described. Each device or elevator may be selectively placed in a space between two adjacent deck members for supporting objects generally above the deck members. Each device includes a space-occupying portion which extends generally into the space and an elevated portion which is joined to the space-occupying portion and extends generally away therefrom. The elevated portion defines a surface upon which objects may be placed for support generally above the deck members. The system, which includes a plurality of such devices, may be utilized in connection with one or more spaces.