The general contractor expects this 277,500-sq-ft, 13-story building to earn LEED-Platinum certification. The curving structure incorporates concrete cores with ultra-low carbon emitting concrete. These hold vertical post-tensioned cable bundles, reducing drift but allowing the building to flex and re-center following seismic activity.
The $146.5-million 525 Golden Gate, completed in June 2012, two months ahead of schedule and within budget, is designed to consume 32% less energy than office buildings of a similar size. Housing more than 900 employees, it is designed to reduce its carbon footprint by 50%.