Abstract: An earthquake-proof structure is supported on a foundation by a seismic shock absorption system adapted to isolate the structure from movement of the foundation. The shock absorption system comprises a plurality of elastomeric pads supporting the structure on the foundation to isolate the structure from horizontal and vertical movements imparted to the foundation when the ground areas surrounding the foundation are subjected to seismic activity. The elastomeric pads are secured between the structure, such as a building, and the foundation. The shock absorption system is adapted for use on level ground, as well as for side-hill applications.

Abstract: An earthquake-proof structure is supported on a foundation comprising a plurality of spaced supports, each including a holder having spherical support members mounted thereon to support the structure. The members are preferably mounted in a cage and guide means are provided for reciprocally mounting the holder to guide vertical movements thereof. In addition, a cushioning system is preferably provided on the holder to resiliently cushion and restrain horizontal movements of the rollers.