Millennium Tower Download PDF


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Figures

Height: Architectural 196.6 m / 645 ft
Height: Occupied 180.8 m / 593 ft
Height: To Tip 196.6 m / 645 ft
Floors Above Ground 58
Floors Below Ground 4
# of Elevators 14
Tower GFA 106,933 m² / 1,151,017 ft²
# of Apartments 440
# of Parking Spaces 355

Facts

Official Name Millennium Tower
Other Names 301 Mission Street
Structure Type Building
Status Completed
Country United States
City San Francisco
Street Address & Map 301 Mission Street
Postal Code 94105
Building Function residential
Structural Material concrete
Construction Start 2004
Completion 2009
Rankings Click arrows to view the next taller/shorter buildings
Regional Ranking #226 Tallest in North America
City Ranking #4 Tallest in San Francisco

Companies Involved

Developer Millennium Partners
Architect
Design Handel Architects LLP
Structural Engineer
Design DeSimone Consulting Engineers
Other Consultant
• Cost AECOM
• Environmental Treadwell & Rollo
Façade Enclos Corp.
• Geotechnical Treadwell & Rollo

About Millennium Tower

301 Mission Street, also known as Millennium Tower, is one of the tallest reinforced concrete structure situated in a seismic zone 4 region. The tower’s height posed many challenges and required the creative use of technologies and cutting edge innovations.

In order to meet the owner’s floor height limits, W-sec steel link beams were used as the shearwall core coupling beams. Conventional diagonally reinforced coupling beams would have required significantly more depth. The embedded region of the beam extends 1.2 meters (4ft) into the wall and transfers the beam moment by bearing on the concrete above and below the embedded beam. Conventional ties which are closely spaced in columns and beams can make it nearly impossible to place concrete. A tie system of welded grid reinforcement known as Baugrid was used, which eliminates all hooks and significantly reduces the volume of rebar. All shearwall boundary elements, Special Moment Resisting Frame columns and beams utilize the Baugrid system. The flanges of the shearwall core are reinforced by continuous Baugrids providing resistance for confinement and shear.

Global News

San Francisco’s Millennium Tower Sinks Another Inch But There Could be a Fix
21 Jul 2017 – The Millennium Tower in San Francisco has sunk…

San Francisco’s Millennium Tower Deemed Safe, for Now, as Legal Issues Continue
15 Feb 2017 – Although Millennium Tower has sunk 16 inches and…

City of San Francisco Suing Millennium Tower Developer
9 Nov 2016 – The City of San Francisco is filing a lawsuit…

More News

News Related to Millennium Tower

News Image
San Francisco’s Millennium Tower Sinks Another Inch But There Could be a Fix
21 Jul 2017
The Millennium Tower in San Francisco has sunk another inch in the past seven months, but on the brighter side, engineers have found a potential fix, which would entail…
News Image
San Francisco’s Millennium Tower Deemed Safe, for Now, as Legal Issues Continue
15 Feb 2017
Although Millennium Tower has sunk 16 inches and titled two at its base, inspectors have deemed the building safe, at this time. Inspections entailed evaluation of…
News Image
City of San Francisco Suing Millennium Tower Developer
9 Nov 2016
The City of San Francisco is filing a lawsuit against the developer of the 58-story Millennium Tower, which has sunk 16 inches (40 centimeters) since completion, causing…
News Image
San Francisco’s Millennium Tower Awaits Peer Review as Building Inspectors Face Tough Questions
31 Oct 2016
San Francisco plans to assemble a peer review panel to examine a developer’s new engineering report, stating that the sinking and leaning Millennium Tower is safe;…
News Image
Owners in San Francisco’s Millennium Tower Ask for Property Tax Cut
6 Oct 2016
Owners of 163 condominium units in San Francisco’s Millennium Tower have petitioned the city to reduce their property taxes to reflect their sinking market values…
News Image
City Issues Subpoena over Sinking San Francisco High-Rise
21 Sep 2016
San Francisco's city attorney on September 20 issued a subpoena to the developers of a high-rise that is tilting and has sunk more than a foot, to determine if structural…
News Image
San Francisco’s Millennium Tower is Tilting and Sinking
2 Aug 2016
The tallest residential tower in San Francisco, and the city’s fourth tallest overall, has sunk 16 inches since it’s opening in 2008. Of added concern is the fact that…

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