A shelving system includes at least two parallel lengths of track, at least two pair of end pieces disposed on opposite ends of each of the at least two lengths of track, and a stationary shelving unit attached to one of the at least two pair of end pieces, with the stationary shelving unit including a plurality of posts and a shelf supported by the plurality of posts, and a mobile shelving unit, which includes a plurality of posts, a shelf supported by the plurality of posts, and a plurality of wheels adapted to roll on the at least two lengths of track. Each length of track includes (a) a plurality of track bases, each track base extending between a first base end and a second base end, being formed with a rail channel on a top of the track base and a recess on a bottom of the track base, and including a plurality of elongated holes extending through each of the plurality of track bases, (b) a plurality of track rails, each including a first rail end and a second rail end and being disposed in the rail channel with the first rail end projecting beyond the first base end thereby to define a rail projection and with the second rail end being recessed from the second base end thereby to cause the channel to define a rail projection socket in the track base, and (c) a coupling member disposed in the recess of the track base, the coupling member joining the first base end of one base to the second base end of another base by being fastened through a track base to at least one of the plurality of track rails.