Gates Foundation & Seattle Center 5th Avenue North Parking Garage – Project of the Week 9/18/17

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The Bill & Melinda Gates Foundation offers the opportunity to dramatically improve the quality of life for billions of people and its campus is a paragon of sustainable features. Designed by NBBJ Architects and completed in 2011, the multi-award winning Gates Foundation’s headquarters is the largest LEED-NC Platinum Certified nonprofit building in the world. Located across the street from the Seattle Space Needle, the former 12-acre asphalt parking lot had previously emptied its runoff into Puget Sound. But the design team including landscape architects Gustafson Guthrie Nichol, or GGN, created a stylish palette of mostly natives, including big leaf maples and edibles, along with drought tolerant non-natives. And, the campus features a total of two acres of extensive greenroofs, each with a five inch depth with plantings of sedum and sempervivum.

Completed first in 2008, most striking is the Seattle Center 5th Avenue North Parking Garage, with its 1.5 acre undulating living roof from American Hydrotech. The multifaceted structure is flooded with natural light and the high-vaulted roof is cut with a dramatic skylight. Working with NBBJ and GGN, Jeffrey L. Bruce & Company led the water resource management design for a 100 percent non-potable irrigation system, including water harvesting, subsurface drainage, green roofs, and soils engineering. Rainwater is filtered by the greenroofs and directed from paved areas into a million-gallon cistern, currently harvesting 3.3 million gallons of rainwater a year. Conservation strategies reduce energy consumption by 39 percent via a solar array, thermal energy, and more. Potable water use is reduced by 79 percent through landscape features, rainwater storage, and the living roofs. This represents an upfront investment in the 100-year energy-efficient building that will pay for itself in fewer than 30 years. In addition to regenerating the surrounding downtown Seattle community, the ecologically and workplace-sensitive campus design has created a new world model for sustainable urban campuses.

Click here: to see more information about this project in The International Greenroof & Greenwall Projects Database Did we miss your contribution? Please let us know to add you to the profile. Would you like one of your projects to be featured? We have to have a profile first! Submit Your Project Profile Project of the Week 9/18/17 video photo credits: Courtesy of Sean Airhart/NBBJ; GGN (Gustafson Guthrie Nichol) including one each by Timothy Hursley and Sellen Construction Company; and Jeffrey L. Bruce & Company.


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