A rack is presented including a plurality of at least first and second frame pieces adapted to be interconnected, wherein each frame extends along a longitudinal axis. The rack includes a corner connector arranged to interconnect at least the first frame piece and the second frame piece with the longitudinal axes of the first and second interconnected frame pieces arranged obliquely to one another. The rack includes at least first and second bracing units in which, for the purpose of connecting a plurality of frame pieces, the first bracing unit is capable of bracing the first frame piece against the corner connector arranged between the first and second frame pieces to be connected, and the second bracing unit is capable of bracing the second frame piece against the corner connector obliquely to the first frame piece. Each bracing unit includes at least one tensioning element and two force transmission members.