Abstract: A relay rack includes a base, a pair of uprights, support gussets and a crossbar. The base is anchored to the ground. The uprights extend from the base to the crossbar. Support gussets stiffen the base and the uprights. The uprights and crossbar are formed such that any mechanical vibrations transmitted through the rack are continuously distributed through the rack members. The base is further stiffened by including a central member that stiffens the rack from deforming in the plane of the uprights.

Abstract: The earthquake resistant equipment rack of the present invention includes a base having integrally formed upstanding walls on each end to provide structural rigidity to the connection of the base and a plurality of vertical upright members. The upstanding walls increase the rigidity of the base in conjunction with the vertical members, and also work in conjunction with gussets to further increase the rigidity and stiffness at the base. The gussets are comprised of a vertical wall which is notched on one end to be coupled to a front wall or channel in the base. The gussets also include a top wall and back wall which are directly coupled to the vertical upright members positioned in association with the base. A channel top is coupled between the uppermost portions of the vertical upright members providing the rack with a rectangular frame structure.