One Rincon Hill North Tower

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Height: Architectural 165 m / 541 ft
Height: To Tip 165 m / 541 ft
Floors Above Ground 45


Official Name One Rincon Hill North Tower
Name of Complex One Rincon Hill
Other Names One Rincon Hill Phase Two
Structure Type Building
Status Completed
Country United States
City San Francisco
Street Address & Map 425 First Street
Postal Code 94103
Building Function residential
Structural Material steel
Proposed 2005
Construction Start 2012
Completion 2014
Rankings Click arrows to view the next taller/shorter buildings
City Ranking #18 Tallest in San Francisco

Companies Involved

Developer Urban West Associates
Design Solomon Cordwell Buenz
Structural Engineer
Design Magnusson Klemencic Associates
MEP Engineer
Design CB Engineers
Main Contractor Bovis Lend Lease
Other Consultant
• Environmental Langan Engineering
• Geotechnical Langan Engineering
Material Supplier
• Cladding JORDAHL
• Formwork Doka GmbH

About One Rincon Hill North Tower

One Rincon Hill anchors the redeveloping neighborhood of Rincon Hill in San Francisco, California. The all-residential tower is located on a narrow site just eight miles from the San Andreas Fault. In response to being built in this highly seismic region, the project employs a first-of-its-kind structural system, using a nontraditional Performance Seismic Design approach (PSD), the first ever to be approved in California.

This structure features a concrete ductile core wall and four concrete outrigger columns connected by buckling restrained braces. The PSD design eliminated the need for an exterior moment frame which reduced overall cost by 8%, increased individual unit areas, allowed unobstructed views, shortened construction time, opti-mized material quantities, and enhanced performance.

Another first in this project is the tuned liquid-mass damper, the first to be employed in the U.S. Two 54,000-gallon tuned liquid sloshing damper tanks located at the building’s top use the motion of sloshing water to counteract wind accelerations and increase occupant comfort.

Throughout the design development process the structural engineer undertook two different research projects. The first project focused on link beam connections at UCLA (with Charles Pankow Foundation and Webcor Concrete). The other studied post-tensioned slab/wall connections at UC Berkeley. The efforts improved One Rincon Hill’s design, led to a modification of ACI Code 318-08, and will influence future design and construction practices.

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