The owner wished to reduce interstory drift and floor displacements/acccelerations. Combined with a steel shear wall at the core, the dampers were used primarily to reduce torsional movement.

Interstory drift reduced to 60% of code requirements. In this case 1.2% instead of 2%.

Savings of 16% of steel, 3,600 tons, or $12 million, excluding dampers, corresponding to a reduction of 4 psf (20 kg/m2) compared to a traditional Moment Frame.