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Unbonded Brace, Buckling-Restraind Brace, Steel Frame Design, BRB

The Nippon TV Tower in Tokyo uses exposed Unbonded Braces to protect it from very large earthquakes in Japan. They are some of the largest BRBs in the world.

More than 640 Unbonded Braces protect the larges hospital to currently use buckling-restrained braces within the highest U.S. seismic zone.

Unbonded Brace BRBs were chosen for the first U.S. bridge application in order to safely and reliably limit the forces transmitted to the abutments during a seismic event.