A rack arrangement for a data center includes an assembly frame including vertical beams, lateral beams connected to the vertical beams, and transverse beams connected to the vertical beams. The transverse beams extend at least partly in a depth direction of the assembly frame. A rack-supporting platform is connected between two of the lateral beams and extends horizontally between four of the vertical beams. Each rack of a plurality of racks is configured to support computer equipment or cooling equipment for servicing the data center. A first rack is supported at least in part by two of the lateral beams. A second rack is disposed above the first rack and disposed atop the rack-supporting platform. The rack-supporting platform is supported in part by a top portion of the first rack such that a load of the second rack is partly applied on the first rack through the rack-supporting platform.