3 -Friction Pendulum Bearings

Friction pendulum bearings are made from two horizontal steel plates that can slide over each other because of their shape and an additional articulated slider.

The bearings are placed between the bottom of a building and its foundation .

They are designed to be very stiff and strong for vertical load, so that they can carry the weight of the building. However, the fact that they slide means that earthquake movements will occur mainly in the bearings.

Friction pendulum bearings have been used in the San Francisco Airport International Terminal. The building has been designed to resist a magnitude 8 earthquake occurring on the San Andreas fault.

San Fransisco Airport Terminal

Photographs on this page are courtesy of Earthquake Protection Systems Inc.


friction pendulum bearing between a column of the building and it's foundations.

Friction Pendulum Bearing


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from Bristol University