2+U 大厦丨美国西雅图丨Pickard Chilton

Architects:Pickard Chilton

Area :1000000 ft²

Year :2020

Photographs :Benjamin Benschneider, David Sundberg/Esto

Manufacturers :  C.R. Laurence, Kaswell, Kawneer, NBK North America, Rulon International, Kalzip, Mosa, NanaWall, Pandawall, SIREWallC.R. Laurence

Architect of Record :Kendall/Heaton Associates

General Contractor :Skanska USA Building Inc

Structural Engineers :Magnusson Klemencic Associated

MEP Engineer :WSP Norge, WSP

Landscape :Swift Company

Principals : Anthony Markese FAIA, Jon Pickard FAIA, William D. Chilton FAIA,

Project Managers : Nancy Clayton AIA, Adrienne Nelson AIA

Project Team : Kathleen Maciejko AIA, Tanner Sharpe, William Traill, Darin Barnes, Rachel Howlett AIA, Andrew Gorzkowski AIA, Anne Lissett AIA, Daniel Raznick AIA, Justin Cochran

Client : Skanska Commercial Development

Enclosure : All New Glass

Retail Consultant : Graham Baba Architects

City : Seattle

Country : United States

2+U creates a space for the community in the heart of downtown Seattle. Located next to the Seattle Art Museum, the project knits together the Waterfront, Business District, and Arts District by lifting the tower 85 feet above the street, providing connectivity at the pedestrian scale, and views through the block to Elliott Bay.

The concept for 2+U creates a strong connection between the building's form and the Northwest's character, resulting in a true Pacific Northwest building. Sharing the block with the Diller Hotel, 2+U is sensitively designed to respond to the iconic 1890 brick structure. Four low-rise buildings hold the street edge around the base of the tower, mapping onto the datums set by the Diller, and responding to its materiality with a layered terracotta façade.

An innovative design strategy – lifting the podium tower 85 feet above street level – creates 24,000 sf of open-air, pedestrian-friendly public space with dynamic retail where the community can gather. 2+U celebrates the arts and culture of the downtown Seattle neighborhood and offers 1,100 sf of dedicated creative and studio space for local artists to use free of charge, with a focus on emerging artists and underserved communities.

While the tower above provides year-round weather protection akin to a tree canopy's warmth and comfort, the dynamic open-air retail experience below serves as a gathering space for the public. With five access points, the Urban Village fuses local retail, art, culture, and nature to offer 16,000 square feet of restaurant and retail space. Designed to be a very porous and welcoming pedestrian experience, the village also accommodates food trucks, as well as entertainment and large-scale art opportunities within the publicly accessible plaza. Heavy timber beams salvaged from the site during demolition were repurposed into benches to provide seating.

Abundant outdoor spaces offer physical and mental benefits, providing opportunities for fresh air, greenery, and views of the Puget Sound and the Olympic Mountains. 2+U is located directly on Seattle’s primary downtown bicycle lane network and offers best-in-class bicycle commuting infrastructure, including conditioned indoor bike storage for 125+ bikes, eBike charging, individual lockers, shower and sauna facilities, and a bicycle repair shop.

Collaborating with a multidisciplinary team committed to sustainable, high-performance solutions, the project began with a sustainability visioning session that shaped the design process. Impactful goals included maximizing daylight, optimizing energy efficiency while exceeding the stringent Seattle Energy Code, and minimizing water usage. The project ultimately achieved LEED-CS Platinum and Well Health-Safety Certifications.

The 530-foot, 1 million GSF Class-A office tower comprises a 19-story podium and 38-story tower. A side core allows for open floor plates with unobstructed views of Puget Sound and natural daylight in the tower's toilet rooms and main egress stairs. The energy efficiency of the tower is made possible in part by an active chilled beam system. Bioretention planters on multiple levels and a drought-tolerant garden on the level 19 terrace serve to mitigate runoff.

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