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CornerStone
CornerStone
Seattle, WA, United States
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Other Projects by Weber Thompson
CornerStone
Seattle, WA, United States
Firm
Type
STATUS
Built
YEAR
2024
SIZE
100,000 sqft - 300,000 sqft
Celebrating Seattle’s origins with a mass-timber framework and industrial-inspired form, CornerStone illustrates what a healthy office can be.
The building’s form frames function with a design that captures rainwater utilizing shed roofs, while strategic carvings of the facade allow natural daylight to penetrate deep into the building. A dowel-laminated timber floor system and glulam structural frame anchor the 5-story mass timber–concrete hybrid structure. With a forward-looking biophilic design, CornerStone highlights the use of natural materials and patterns, access to views, fresh air, and ample daylighting.
By shaping the street-level edges, the form creates small eddies of circulation, where moments of interaction support a vibrant streetscape. These provide spaces for retail spill-out, moments of respite, and educational opportunities for CornerStone’s regenerative ambitions.
Activating the building’s facades, deeply cantilevered balconies are integrated into all facades, providing more opportunities for human connection to the environment and the neighborhood. Similarly, an exterior feature stair at the entry amplifies collegial interaction with enlarged mid-landings that peek out from behind a perforated steel scrim. Welcoming visitors to the entry and paying homage to the honeybee apiary on the roof, a honeycomb-inspired timber pergola celebrates the regionally sourced mass timber structure.
Enrolled in Seattle’s Living Building Pilot Program, CornerStone achieved three Petal Certification from ILFI’s Living Building Challenge, including the arduous Materials Petal. With more than 1,000 materials vetted for avoidance of toxic Red List chemicals, Cornerstone prioritizes indoor air quality for tenants while educating the public about healthy materials. With a high-efficiency mechanical system and thoughtful fenestration, energy usage is reduced by 30% with a projected EUI of 33.5kBtu/ft². A rainwater harvesting system utilizes sloped roofs to funnel rainwater to a 268,745-gallon cistern, a 54% reduction in domestic water use. CornerStone’s hybrid structural system saves 1,886 metric tons of CO2e, reducing its carbon footprint by 35%.
The building’s form frames function with a design that captures rainwater utilizing shed roofs, while strategic carvings of the facade allow natural daylight to penetrate deep into the building. A dowel-laminated timber floor system and glulam structural frame anchor the 5-story mass timber–concrete hybrid structure. With a forward-looking biophilic design, CornerStone highlights the use of natural materials and patterns, access to views, fresh air, and ample daylighting.
By shaping the street-level edges, the form creates small eddies of circulation, where moments of interaction support a vibrant streetscape. These provide spaces for retail spill-out, moments of respite, and educational opportunities for CornerStone’s regenerative ambitions.
Activating the building’s facades, deeply cantilevered balconies are integrated into all facades, providing more opportunities for human connection to the environment and the neighborhood. Similarly, an exterior feature stair at the entry amplifies collegial interaction with enlarged mid-landings that peek out from behind a perforated steel scrim. Welcoming visitors to the entry and paying homage to the honeybee apiary on the roof, a honeycomb-inspired timber pergola celebrates the regionally sourced mass timber structure.
Enrolled in Seattle’s Living Building Pilot Program, CornerStone achieved three Petal Certification from ILFI’s Living Building Challenge, including the arduous Materials Petal. With more than 1,000 materials vetted for avoidance of toxic Red List chemicals, Cornerstone prioritizes indoor air quality for tenants while educating the public about healthy materials. With a high-efficiency mechanical system and thoughtful fenestration, energy usage is reduced by 30% with a projected EUI of 33.5kBtu/ft². A rainwater harvesting system utilizes sloped roofs to funnel rainwater to a 268,745-gallon cistern, a 54% reduction in domestic water use. CornerStone’s hybrid structural system saves 1,886 metric tons of CO2e, reducing its carbon footprint by 35%.
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