Discussion
A buckling restrained brace differs from a conventional brace in that it
Answer: B
Correct answer: yields in compression as well as in tension without buckling
The yielding steel core is encased in a mortar-filled casing that restrains it laterally without carrying axial load, so the core reaches its yield force in compression just as it does in tension. A conventional brace buckles in compression and its hysteresis loop pinches badly, dissipating a fraction of the energy for the same drift.
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