Seismic isolation bearings isolate a structure from the ground motion produced by an earthquake. The energy absorption devices are designed to absorb the energy associated with an earthquake. This seismic (Base) Isolator consists of alternate layers of rubber and steel bonded together, with a cylinder of pure lead tightly inserted through a hole in the middle. The rubber layers allow the isolator to easily displace sideways, reducing the earthquake loads felt by the building and its occupants. They also act as a spring, ensuring that the structure returns to its original position after the shaking has stopped.
Fact Sheet ID Number
Construction Equipment & Methods
dis seismic isolater, earthquake protection, flexible structure, construction
Date of this Version
ECT Team, Purdue, "DIS Seismic Isolater" (2007). ECT Fact Sheets. Paper 62.