Hello ladies and gents this is the viking telling you that today we are talking about
301 Mission Street is a developmen in the South of Market district of downtown San Francisco. A mixed-use, primarily residential development, it is the tallest residential building in San Francisco. The blue-gray glass, late-modernist buildings are bounded by Mission, Fremont, and Beale Streets, and the north end of the Transbay Transit Center site.
Opened to residents on April 23, 2009, 301 Mission includes two buildings: a 12-story tower located on the northeast of the property, and Millennium Tower, a 58-story, 645-foot-tall (197 m) condominium skyscraper. In total, the project has 419 residential units, with 53 of those units in the smaller tower. The tower's highest level, 58 floors above the ground, is listed as the 60th, because floors 13 and 44 are missing for superstitious reasons.
The French restaurant and wine bar International Smoke is housed on the ground floor of the skyscraper. Resident services include a private concierge and access to the 20,000-square-foot (1,900 m2) Owner's Club Level, which features amenities such as a private lounge, wine cellar, and fitness center. The development's "lifestyle" program organizes cultural events.
After developers apparently disclosed in 2015 that the building was sinking and tilting, the public was notified of the problem in 2016. Treadwell & Rollo's geotechnical design for the foundation of the main tower consists of a concrete slab built on 60–90-foot-deep (18–27 m) concrete friction piles through the fill and young bay mud, and embedded into dense Colma sand.
A number of other buildings in 301 Mission Street’s area have used similar systems, although due to varying earth conditions, others have pushed piles directly into the bedrock 200 feet (61 m) below.An examination in 2016 showed the building had sunk 16 inches (41 cm) with a two-inch (5.1 cm) tilt at the base and an approximate six-inch (15 cm) tilt at the top of the tower. The building is leaning toward the northwest, and has caused cracks in the building's basement and the pavement surrounding the tower. As of 2018, the sinking has increased to 18 inches with a lean of 14 inches.
The developer blames the sinking problem on the Transbay Joint Powers Authority (TJPA), who were responsible for construction of the neighboring Transbay Transit Center (TTC). However, the sinking problem had reportedly started before TTC construction even broke ground, and TJPA asserted the building had already settled 10 inches (25 cm), well past the original maximum vertical settling prediction of 5.5 inches (14 cm) in 20 years, by the time TJPA began removing the timber piles under the prior Transbay Terminal in 2011.
The building's homeowners association, represented by general counsel Adrian Adams of Adams Stirling PLC, retained Dan Petrocelli of O’Melveny & Myers, to sue Webcor, Millennium Partners, and the TJPA. Originally, the homeowners association had hired David Casselman to sue the TJPA instead of developer Millennium Partners, as Casselman noted that "inverse condemnation law allows residents to collect legal fees on top of any award, whereas suing the developer will steer up to 40 percent of any award to lawyers".
Another group of tenants who disagree with the homeowners association, led by resident and patent litigator Jerry Dodson, is suing Millennium Partners, the City of San Francisco, and the TJPA. In breaking with Casselman and the homeowners association, Dodson has regarded Millennium Partners as the responsible culprit.
In November 2016, the city of San Francisco filed suit against the tower's developer Mission Street Developers LLC, claiming that the developers withheld information on the sinking problems from potential apartment buyers. Mission Street Developers rejected the city's claims.
Sage Engineers has been hired by Millennium Partners to provide an engineering study on the sinking problem. Some experts have prognosticated that the cost to fix the tilt could exceed the liability insurance held by Millennium Partners and the building's various construction vendors. If the TJPA is found to be at fault, San Francisco taxpayers could end up paying for the repairs.[13]
As of 2017, a city inspection has found that the building is still safe to occupy, though there has been damage to the foundation and electrical system.
In March 2017, the homeowners association filed suit against Millennium Partners, Webcor, Handel Architects, Treadwell & Rollo, DeSimone Consulting Engineers, Arup, and Transbay Joint Powers Authority. They are seeking $200 million to cover repairs and damages.
In early September 2018, residents reported hearing various "creaking sounds". At around 2:30 a.m. on the morning of Saturday, September 8, 2018, residents reported hearing a loud "popping sound". On Sunday, the following day, a resident located in a corner unit on the 36th floor discovered a cracked window. The glass used in the building's windows and facade is rated to withstand hurricane force winds, leading to concern that the crack was a symptom of a much larger structural failure.
Underpinning Millennium Tower
On December 4, 2018, Ronald Hamburger, the senior principal engineer at Simpson Gumpertz Heger, revealed in a press release on a final resolution to the Millennium Tower's tilting and sinking problem by underpinning the building. The solution will involve the installation of 52 piles along the north and west sides of the tower beneath the sidewalk that reach down 250 ft (76.2 m) into the bedrock of downtown San Francisco and be tied with the original 60-90 ft (18.3-27.4 m) deep foundation piles.
It is estimated that about 50% of the tilt will be evened out over a period of 10 years as the south and eastern sides of the building come back into re-alignment with the now sunken north and western sides of the building, at which point the remaining south and eastern sides of the building will be anchored to the bedrock, permanently resolving the tilting and sinking of the building. The fix will cost about $100 million.
In May 2016, residents were informed the main tower was both sinking and tilting, resulting in several lawsuits concerning repair costs and whether the tilt had been withheld from buyers. I hope you liked this post and as always have a chilled day from the Viking.
THE MILLENNIUM TOWER
Opened to residents on April 23, 2009, 301 Mission includes two buildings: a 12-story tower located on the northeast of the property, and Millennium Tower, a 58-story, 645-foot-tall (197 m) condominium skyscraper. In total, the project has 419 residential units, with 53 of those units in the smaller tower. The tower's highest level, 58 floors above the ground, is listed as the 60th, because floors 13 and 44 are missing for superstitious reasons.
The French restaurant and wine bar International Smoke is housed on the ground floor of the skyscraper. Resident services include a private concierge and access to the 20,000-square-foot (1,900 m2) Owner's Club Level, which features amenities such as a private lounge, wine cellar, and fitness center. The development's "lifestyle" program organizes cultural events.
Sinking and tilting problem
DiscoveryAfter developers apparently disclosed in 2015 that the building was sinking and tilting, the public was notified of the problem in 2016. Treadwell & Rollo's geotechnical design for the foundation of the main tower consists of a concrete slab built on 60–90-foot-deep (18–27 m) concrete friction piles through the fill and young bay mud, and embedded into dense Colma sand.
A number of other buildings in 301 Mission Street’s area have used similar systems, although due to varying earth conditions, others have pushed piles directly into the bedrock 200 feet (61 m) below.An examination in 2016 showed the building had sunk 16 inches (41 cm) with a two-inch (5.1 cm) tilt at the base and an approximate six-inch (15 cm) tilt at the top of the tower. The building is leaning toward the northwest, and has caused cracks in the building's basement and the pavement surrounding the tower. As of 2018, the sinking has increased to 18 inches with a lean of 14 inches.
The developer blames the sinking problem on the Transbay Joint Powers Authority (TJPA), who were responsible for construction of the neighboring Transbay Transit Center (TTC). However, the sinking problem had reportedly started before TTC construction even broke ground, and TJPA asserted the building had already settled 10 inches (25 cm), well past the original maximum vertical settling prediction of 5.5 inches (14 cm) in 20 years, by the time TJPA began removing the timber piles under the prior Transbay Terminal in 2011.
The building's homeowners association, represented by general counsel Adrian Adams of Adams Stirling PLC, retained Dan Petrocelli of O’Melveny & Myers, to sue Webcor, Millennium Partners, and the TJPA. Originally, the homeowners association had hired David Casselman to sue the TJPA instead of developer Millennium Partners, as Casselman noted that "inverse condemnation law allows residents to collect legal fees on top of any award, whereas suing the developer will steer up to 40 percent of any award to lawyers".
Another group of tenants who disagree with the homeowners association, led by resident and patent litigator Jerry Dodson, is suing Millennium Partners, the City of San Francisco, and the TJPA. In breaking with Casselman and the homeowners association, Dodson has regarded Millennium Partners as the responsible culprit.
In November 2016, the city of San Francisco filed suit against the tower's developer Mission Street Developers LLC, claiming that the developers withheld information on the sinking problems from potential apartment buyers. Mission Street Developers rejected the city's claims.
Sage Engineers has been hired by Millennium Partners to provide an engineering study on the sinking problem. Some experts have prognosticated that the cost to fix the tilt could exceed the liability insurance held by Millennium Partners and the building's various construction vendors. If the TJPA is found to be at fault, San Francisco taxpayers could end up paying for the repairs.[13]
As of 2017, a city inspection has found that the building is still safe to occupy, though there has been damage to the foundation and electrical system.
In March 2017, the homeowners association filed suit against Millennium Partners, Webcor, Handel Architects, Treadwell & Rollo, DeSimone Consulting Engineers, Arup, and Transbay Joint Powers Authority. They are seeking $200 million to cover repairs and damages.
In early September 2018, residents reported hearing various "creaking sounds". At around 2:30 a.m. on the morning of Saturday, September 8, 2018, residents reported hearing a loud "popping sound". On Sunday, the following day, a resident located in a corner unit on the 36th floor discovered a cracked window. The glass used in the building's windows and facade is rated to withstand hurricane force winds, leading to concern that the crack was a symptom of a much larger structural failure.
Underpinning Millennium Tower
On December 4, 2018, Ronald Hamburger, the senior principal engineer at Simpson Gumpertz Heger, revealed in a press release on a final resolution to the Millennium Tower's tilting and sinking problem by underpinning the building. The solution will involve the installation of 52 piles along the north and west sides of the tower beneath the sidewalk that reach down 250 ft (76.2 m) into the bedrock of downtown San Francisco and be tied with the original 60-90 ft (18.3-27.4 m) deep foundation piles.
It is estimated that about 50% of the tilt will be evened out over a period of 10 years as the south and eastern sides of the building come back into re-alignment with the now sunken north and western sides of the building, at which point the remaining south and eastern sides of the building will be anchored to the bedrock, permanently resolving the tilting and sinking of the building. The fix will cost about $100 million.
In May 2016, residents were informed the main tower was both sinking and tilting, resulting in several lawsuits concerning repair costs and whether the tilt had been withheld from buyers. I hope you liked this post and as always have a chilled day from the Viking.
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